Catalog
2010
Magnecraft®
Solid State Relays
2
Contents Magnecraft® Solid State Relays
Series Overview � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � �3
861 Relays � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � �4
861H Relays � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � �7
SSRDIN Relays � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � �10
6000 Series Relays � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � �13
Accessories for 6000 Series Relays � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � �17
70S2 Series Relays � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � �19
Application Data � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � �24
Selection Guide � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � �30
Website Guide � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � �31
3
Series Defining
Feature Style
Internal
Heat
Sink
Contact
Configuration
Output
Current
Range (A)
Input
Voltage
Range
Output
Voltage
Range
Page
861
Slim
17�5 mm
profile
Slim DIN &
panel mount Yes SPST-NO;
SPST-NC 8–15 3–32 Vdc;
90–280 Vac
3–150 Vdc;
24–480 Vac 6
861H
Class 1,
Division 2
certified
for use in
hazardous
locations
Slim DIN &
panel mount Yes SPST-NO;
SPST-NC 8–15 3–32 Vdc;
90–280 Vac
3–150 Vdc;
24–480 Vac 9
SSRDIN
Integrated
heat sink and
high current
switching
capacity
DIN & panel
mount Yes SPST-NO 10–45 4–32 Vdc;
90–280 Vac
0–60 Vdc;
24–660 Vac 12
6000
High current
switching
capacity in a
small package
Hockey puck-
panel mount No SPST-NO;
DPST-NO 10–75 3–32 Vdc;
90–280 Vac
3–200 Vdc;
24–480 Vac 15
70S2
Small
package
size
PCB & panel
mount No SPST-NO 3–25 3–32 Vdc 3–60 Vdc;
8–280 Vac 21
Series Overview Magnecraft® Solid State Relays
Depending on the application, the Magnecraft line of solid state relays offers a
number of advantages over electromechanical relays, including longer life cycles,
less energy consumption and reduced maintenance costs�
Key Features
100% solid state design
Modern appearance and advanced technology
Industry first design (861 & 861H series)
Several styles to fit multiple applications
861 Relay
861H Relay
SSRDIN Relay
6000 Series Relays
70S2 Series Relays
4
Description
The 861 is the first complete solid state relay without any moving parts, all in a slim
17�5 mm design�
Switching
Type
Switching
Device
Input Voltage
Range
Output Voltage
Range
Contact
Configuration
Rated Output
Current (A)
Standard Part
Number
DC switching MOSFET (1) 3�5–32 Vdc 3–50 Vdc SPST-NO 15 861SSR115-DD
3–150 Vdc SPST-NO 8 861SSR208-DD
Random SCR (2) 3–32 Vdc 24–280 Vac SPST-NO 10 861SSR210-DC-2
SPST-NC 10 861SSR210-DC-4
90–280 Vac 24–280 Vac SPST-NO 10 861SSR210-AC-2
Zero cross SCR
3–32 Vdc 24–280 Vac SPST-NO 10 861SSR210-DC-1
48–480 Vac SPST-NO 10 861SSR410-DC-1
90–280 Vac 24–280 Vac SPST-NO 10 861SSR210-AC-1
48–480 Vac SPST-NO 10 861SSR410-AC-1
(1) MOSFET = metal oxide semiconductor field-effect transistor
(2) SCR = silicon-controlled rectifier
Part Number Explanation
Series:
861
Output Type:
SSR = SCR
SSR = MOSFET (DD Only)
Output Voltage:
1 = 3 to 50 Vdc
2 = 24 to 280 Vac
2 = 3 to 150 Vdc (DD Only)
4 = 48 to 480 Vac
Output Current:
08 = 8 A
10 = 10 A
15 = 15 A
Input Voltage:
AC = 90 to 280 Vac
DC = 3 to 32 Vdc
DD = 3.5 to 32 Vdc
Contact Conguration &
Switching Type:
1 = SPST-NO, Zero Cross
2 = SPST-NO, Random
4 = SPST-NC, Random
Null = SPST-NO, DC Switching
Feature Benefit
Solid state circuitry Involves no moving parts which extends product life,
increases reliability, and enables silent operation
Optically coupled circuit Provides isolation between input and output circuits
Internal snubber Helps protect the relay’s internal circuit from high
voltage transients
Internal heat sink Provides factory-tested thermal management
Fingersafe® terminals Helps prevent an operator from touching live circuits
DIN and panel mounting Mounts directly onto DIN rail or panel and provides flexibility
to accommodate last minute design changes
Description Magnecraft® Solid State Relays
861
SPST-NO, 8 A to 15 A
SPST-NC, 10 A
861 Relay
5
Specifications (UL 508)
Part Number 861SSR•••-DD 861SSR•••-DC-• 861SSR•••-AC-•
Input Characteristics
Input Voltage Range 3�5–32 Vdc 3–32 Vdc 90–280 Vac
Must Release Voltage 1 Vdc 10 Vac
Nominal Input Impedance Current regulator 16–25 kW
Typical Input Current at 5 Vdc 12 mA 16 mA; 12 mA
(861SSR210-DC-4)
12 mA
Reverse Polarity Protection Yes Yes N/A
Output Characteristics
Switching Device MOSFET SCR (2)
Switching Type DC switching Zero cross; Random
Contact Configuration SPST-NO SPST-NO; SPST-NC
Output Voltage Range 3–150 Vdc 24–480 Vac
Maximum Rate of Rise Off State Voltage (dv/dt) N/A 500 V/us;
350 V/us (861SSR410);
200 V/us (861SSR210-DC-4)
Output Current Range 8–15 A 10 A (rms)
Minimum Load Current–Maintain On 20 mA 50 mA
Non-Repetitive Surge Current (8�3 ms) 8 A: 35 A;
15 A: 50 A
500 A (rms)
Maximum rms Overload Current (1 s) 8 A: 17 A;
15 A: 24 A;
24 A (rms)
Maximum Off State Leakage Current 0�25 mA 10 mA (rms)
Typical On State Voltage Drop N/A 1�25 Vac (rms)
Maximum On State Voltage Drop 0�5 Vdc 1�6 Vac (rms)
Maximum On State Resistance 40 mWN/A
Maximum Turn-On Time 5 ms 8�3 ms
Maximum Turn-Off Time 5 ms 8�3 ms
Maximum I² T for Fusing N/A 1250 A²sec (861SSR210);
850 A²sec (861SSR410)
General Characteristics
Electrical Life N/A for solid state relays
Thermal Resistance (Junction–Case) 8 A: 0�5 °C/W;
15 A: 1�4 °C/W
0�66 °C/W
Internal Heat Sink 4�0 °C/W
Dielectric Strength (Input–Output) 2500 V (rms) 4000 V (rms)
Dielectric Strength (Terminals–Chassis) 2500 V (rms)
Operating Temperature Range -30 °C–+ 80 °C (derating applies)
Storage Temperature Range -40 °C–+100 °C
Weight 127�1 g (4�1 oz)
Input Indication Green LED
Terminal Wire Capacity (Input and Output) 14 AWG (2�5 mm²) maximum
Terminal Screw Torque 7�1 lb-in (0�8 N•m) maximum
Safety Cover IP20
Agency Approvals UL Listed (E258297); CE (per IEC60947-4-2); CSA (168986); RoHS
Specications Magnecraft® Solid State Relays
861
SPST-NO, 8 A to 15 A
SPST-NC, 10 A
6
INPUT
+
INPUT
OUTPUT
OUTPUT
POWER SOURCE
POWER SUPPLY
SSR
-
LOAD
(-) 18A2 (-)
(+) 15A1 (+)
MOSFET ONLY
0.56
(14.2)
0.3
0.7
(17.6)
0.2
(5.0)
(6.9)
3.5
2.6
1.8
(90)
(66.8)
(45.3) 1.4
(35.6)
0.1
0.7
1.4
2.6 MAX.
(16.0)
(34.6)
(65.0)
0.2
0.6
(6)
(15.8)
(3.4)
0.6
(14.0)
1.4
(35.2)
0.6
(14.3)
0.1
(1.7)
3.6
(92.4)
0.2
(5)
INPUT
OUTPUT
De-Rating Curves
AMBIENT TEMPERATURE IN °C
LOAD CURRENT IN AMPERES
14
16
12
10
8
6
4
2
13
15
11
9
7
5
3
1
0 10 20 30 40 50 60 70 80 90
5 15 25 35 45 55 65 75 85
Note: A minimum spacing of 17.5 mm (0.7 in) between adjacent 861 relays
is required in order to acheive the maximum ratings.
Dimensions,
Wiring Diagram,
De-Rating Curves
Magnecraft® Solid State Relays
861
SPST-NO, 8 A to 15 A
SPST-NC, 10 A
Dimensions: Inches (Millimeters)
Wiring Diagram
7
Description
The 861H is the first complete solid state relay approved for use in hazardous
locations. Patent pending.
Switching
Type
Switching
Device
Input Voltage
Range
Output Voltage
Range
Contact
Configuration
Rated Output
Current (A)
Standard Part
Number
DC switching MOSFET 3.5–32 Vdc 3–50 Vdc SPST-NO 15 861HSSR115-DD
3–150 Vdc SPST-NO 8 861HSSR208-DD
Zero cross SCR (2)
3–32 Vdc
24–280 Vac SPST-NO 10 861HSSR210-DC-1
48–480 Vac SPST-NO 10 861HSSR410-DC-1
48–600 Vac SPST-NO 10 861HSSR610-DC-1
90–280 Vac
24–280 Vac SPST-NO 10 861HSSR210-AC-1
48–480 Vac SPST-NO 10 861HSSR410-AC-1
48–600 Vac SPST-NO 10 861HSSR610-AC-1
Feature Benefit
Class 1, Division 2
certification (1)
UL-approved relay for use in
hazardous locations
Solid state circuitry Involves no moving parts, which extends product life,
increases reliability, and enables silent operation
Optically coupled circuit Provides isolation between input and output circuits
Internal snubber Helps protect the relay’s internal circuit from high
voltage transients
Internal heat sink Provides factory-tested thermal management
Fingersafe® terminals Helps prevent an operator from touching live circuits
DIN and panel mounting Mounts directly onto DIN rail or panel and provides
flexibility to accommodate last minute design changes
(1) See page 30 for more information on Class 1, Division 2.
Class 1, Division 2 certification for
use in hazardous locations.
(Temperature code: T5)
Part Number Explanation
Series:
861H
Output Type:
SSR = SCR
SSR = MOSFET (DD Only)
Output Voltage:
1 = 3 to 50 Vdc
2 = 24 to 280 Vac
2 = 3 to 150 Vdc (DD Only)
4 = 48 to 480 Vac
6 = 48 to 600 Vac
Output Current:
08 = 8 A
10 = 10 A
15 = 15 A
Input Voltage:
AC = 90 to 280 Vac
DC = 3 to 32 Vdc
DD = 3.5 to 32 Vdc
Contact Conguration &
Switching Type:
1 = SPST-NO, Zero Cross
Null = SPST-NO, DC Switching
Description Magnecraft® Solid State Relays
861H
SPST-NO, 8 A to 15 A
861H Relay
8
Specifications (UL 508)
Part Number 861SSR•••-DD 861SSR•••-DC-• 861SSR•••-AC-•
Input Characteristics
Input Voltage Range 3�5–32 Vdc 3–32 Vdc 90–280 Vac
Must Release Voltage 1 Vdc 10 Vac
Nominal Input Impedance Current regulator 16–25 kW
Typical Input Current at 5 Vdc 12 mA 16 mA; 12 mA
(861SSR210-DC-4)
12 mA
Reverse Polarity Protection Yes Yes N/A
Output Characteristics
Switching Device MOSFET SCR (2)
Switching Type DC switching Zero cross; Random
Contact Configuration SPST-NO SPST-NO; SPST-NC
Output Voltage Range 3–150 Vdc 24–480 Vac
Maximum Rate of Rise Off State Voltage (dv/dt) 8 A: 3–150 V:
15 A: 3–50 V
500 V/us;
350 V/us (861SSR410);
200 V/us (861SSR210-DC-4)
Output Current Range 8–15 A 10 A (rms)
Minimum Load Current–Maintain On 20 mA 50 mA
Non-Repetitive Surge Current (8�3 ms) 8 A: 35 A;
15 A: 50 A
500 A (rms)
Maximum rms Overload Current (1 s) 8 A: 17 A;
15 A: 24 A;
24 A (rms)
Maximum Off State Leakage Current 0�25 mA 10 mA (rms)
Typical On State Voltage Drop N/A 1�25 Vac (rms)
Maximum On State Voltage Drop 0�5 Vdc 1�6 Vac (rms)
Maximum On State Resistance 40 mWN/A
Maximum Turn-On Time 5 ms 8�3 ms
Maximum Turn-Off Time 5 ms 8�3 ms
Maximum I² T for Fusing N/A 1250 A²sec (861SSR210);
850 A²sec (861SSR410)
General Characteristics
Electrical Life N/A for solid state relays
Thermal Resistance (Junction–Case) 8 A: 0�5 °C/W;
15 A: 1�4 °C/W
0�66 °C/W
Internal Heat Sink 4�0 °C/W
Dielectric Strength (Input–Output) 2500 V (rms) 4000 V (rms)
Dielectric Strength (Terminals–Chassis) 2500 V (rms)
Operating Temperature Range -30 °C–+ 80 °C (derating applies)
Storage Temperature Range -40 °C–+100 °C
Weight 127�1 g (4�1 oz)
Input Indication Green LED
Terminal Wire Capacity (Input and Output) 14 AWG (2�5 mm²) maximum
Terminal Screw Torque 7�1 lb-in (0�8 N•m) maximum
Safety Cover IP20
Agency Approvals Class 1, Division 2 (for hazardous locations); UL Recognized (E317746); RoHS
Specications Magnecraft® Solid State Relays
861H
SPST-NO, 8 A to 15 A
9
Wiring Diagram
INPUT
+
INPUT
OUTPUT
OUTPUT
POWER SOURCE
POWER SUPPLY
SSR
-
LOAD
(-) 18A2 (-)
(+) 15A1 (+)
MOSFET ONLY
0.56
(14.2)
0.3
0.7
(17.6)
0.2
(5.0)
(6.9)
3.5
2.6
1.8
(90)
(66.8)
(45.3) 1.4
(35.6)
0.1
0.7
1.4
2.6 MAX.
(16.0)
(34.6)
(65.0)
0.2
0.6
(6)
(15.8)
(3.4)
0.6
(14.0)
1.4
(35.2)
0.6
(14.3)
0.1
(1.7)
3.6
(92.4)
0.2
(5)
INPUT
OUTPUT
De-Rating Curves
AMBIENT TEMPERATURE IN °C
LOAD CURRENT IN AMPERES
14
16
12
10
8
6
4
2
13
15
11
9
7
5
3
1
0 10 20 30 40 50 60 70 80 90
5 15 25 35 45 55 65 75 85
Note: A minimum spacing of 17.5 mm (0.7 in) between adjacent 861 relays
is required in order to acheive the maximum ratings.
Dimensions,
Wiring Diagram,
De-Rating Curves
Magnecraft® Solid State Relays
861H
SPST-NO, 8 A to 15 A
Dimensions: Inches (Millimeters)
10
Description
The SSRDIN relays offer a complete solid state package that is an energy-efficient,
current switching alternative to standard electromechanical relays� Advantages
include longer life cycles, less energy consumption, and reduced maintenance costs�
Switching Type Switching
Device
Input Voltage
Range
Output Voltage
Range
Contact
Configuration
Rated Output
Current (A) Standard Part Number
DC switching MOSFET 4–32 Vdc 0–60 Vdc SPST-NO
10 SSR310DIN-DC22 (1)
20 SSR320DIN-DC22 (1)
30 SSR330DIN-DC22 (1)
Zero cross SCR
4–32 Vdc 24–280 Vac SPST-NO
10 SSR210DIN-DC22
20 SSR220DIN-DC22
30 SSR230DIN-DC22
3–32 Vdc 24–280 Vac SPST-NO 45 SSR245DIN-DC45
4–32 Vdc 48–660 Vac SPST-NO
10 SSR610DIN-DC22
20 SSR620DIN-DC22
30 SSR630DIN-DC22
SPST-NO 45 SSR645DIN-DC45
90–280 Vac 24–280 Vac SPST-NO
10 SSR210DIN-AC22
20 SSR220DIN-AC22
30 SSR230DIN-AC22
90–140 Vac 24–280 Vac SPST-NO 45 SSR245DIN-AC45
90–280 Vac 48–660 Vac SPST-NO
10 SSR610DIN-AC22
20 SSR620DIN-AC22
30 SSR630DIN-AC22
SPST-NO 45 SSR645DIN-AC45
(1) No agency approvals on MOSFET versions
Feature Benefit
Solid state circuitry Involves no moving parts
Optically coupled circuit Provides isolation between input and output circuits
Internal snubber Helps protect the relay’s internal circuit from high
voltage transients
Internal heat sink Provides factory tested thermal management
Integrated chassis ground Simplifies system wiring
Fingersafe® terminals Helps prevent an operator from touching live circuits
DIN and panel mounting Increases functionality and ease of use and fits a variety of
applications
Part Number Explanation
SSRDIN Relay
Description Magnecraft® Solid State Relays
SSRDIN
SPST-NO, 10 A to 45 A
11
Specifications (UL 508)
Part Number SSR2••DIN-DC•• SSR3••DIN-DC22 SSR6••DIN-DC•• SSR2••DIN-AC•• SSR6••DIN-AC••
Input Characteristics
Input Voltage Range 4–32 Vdc 90–280 Vac
Maximum Turn-On Voltage 4 Vdc 90 Vrms
Minimum Turn-Off Voltage 1 Vdc 10 Vrms
Typical Input Current 8–12 mA 9–11 mA 8–12 mA 2–4 mA
Output Characteristics
Output Type SCR MOSFET SCR
Switching Type Zero voltage DC switching Zero voltage
Output Voltage 24–280 Vac 0–60 Vdc 48–660 Vac 24–280 Vac 48–660 Vac
Load Current Range 10–45 A 10–30 A 10–45 A
Transient Over-Voltage 600 Vpk N/A 1200 Vpk 600 Vpk 1200 Vpk
Maximum Surge Current 10 A: 120 Apk;
20 A: 250 Apk;
30/45 A: 625 Apk
(at 16�6 ms)
10 A: 30 Apk;
20 A: 60 Apk;
30 A: 90 Apk
(at 10 ms)
625 Apk
(at 16�6 ms)
10 A: 120 Apk;
20 A: 250 Apk;
30/45 A: 625 Apk
(at 16�6 ms)
625 Apk
(at 16�6 ms)
Maximum On-State Voltage Drop at
Rated Current
1�6 Vpk 10 A: 0�2 Vpk;
20 A: 0�4 Vpk;
30 A: 0�5 Vpk
1�6 Vpk 1�6 Vpk 1�6 Vpk
Maximum I²t For Fusing,
(8�3 ms)
10 A: 60 A²sec;
20 A: 260 A²sec;
30/45 A: 1620 A²sec
N/A 1620 A²sec 10 A: 60 A²sec;
20 A: 260 A²sec;
30/45 A: 1620 A²sec
1620 A²sec
Maximum Off-State Leakage
Current at Rated Voltage
10 mA 0�1 mA 1 mA 10 mA 1 mA
Maximum Rate of Rise Off State
Voltage (dv/dt)
500 V/us N/A 500 V/us
Maximum Response Time
(On and Off)
1/2 cycle 1�0 ms 1/2 cycle
Maximum On State Resistance N/A 10 A: 20 mW;
20 A: 18 mW;
30 A: 16 mW
N/A
General Characteristics
Electrical Life N/A for solid state relays
Operating Temperature Range -40–+80 °C (derating applies)
Storage Temperature Range -40–+125 °C
Weight 10/20/30 A: 272 g (9�6 oz);
45 A: 482 g (17 oz)
Input Indication Green LED
Encapsulation Thermally conductive epoxy
Input Terminal Screw Torque 10/20/30 A: 5�0-6�0 in lb (0�6-0�7 N•m);
45 A: 5�0-6�0 in lb (0�6-0�7 N•m)
Output Terminal Screw Torque 10/20/30 A: 5�0-6�0 in lb (0�6-0�7 N•m);
45 A: 10�0-15�0 in lb (1�1-1�7 N•m)
Mount Type DIN rail and panel mount
Agency Approvals UL Recognized (E258297) SCR output only; CSA (168986) SCR output only; CE (per IEC 60950 and 61000); RoHS
Specications Magnecraft® Solid State Relays
SSRDIN
SPST-NO, 10 A to 45 A
12
Dimensions: Inches (Millimeters)
Wiring Diagram
De-Rating Curves
INPUT
+
INPUT
OUTPUT
OUTPUT
POWER SOURCE
POWER SUPPLY
SSR
-
LOAD
(-) 24 (-)
(+) 13 (+)
MOSFET ONLY
20
15
25
30
35
45
40
10
5
10
030 50 70 90
20 40 60 80
Load Current vs Ambient Temperature (100% Duty Cycle)
LOAD CURRENT IN AMPS
MAXIMUM AMBIENT TEMP. IN °C
SSRDIN 30 A
SSRDIN 45 A
SSRDIN 20 A
SSRDIN 10 A
0.89
(22.6)
0.88
(22.4)
1.79
(45.5)
0.88
(22.4)
MOUNTING HOLE
0.17 (4.3) DIA.
3.44
(87.4)
3.1
(78.7)
2.51
(63.7)
4.2
(106.7)
3.1
(78.7)
0.88
(22.4)
0.44
(11.2)
3.15
(80.0)
3.53
(89.7)
3.15
(80.0)
2.61
(66.2)
MOUNTING HOLE
0.17 (4.3) DIA.
3.8
(97.7)
22 mm 45 mm
INPUT
OUTPUT
INPUT
OUTPUT
a
10
0.39
22 mm
a6 mm2
AWG 10
10 mm2
AWG 8
4 mm2
AWG 12
input output
45 mm
input output
Dimensions,
Wiring Diagram,
De-Rating Curves
Magnecraft® Solid State Relays
SSRDIN
SPST-NO, 10 A to 45 A
13
Description
The 6000 Series solid state relays offer an energy-efficient, current switching
alternative to standard electromechanical relays� Advantages include longer life
cycles, less energy consumption, and reduced maintenance costs�
Switching Type Switching
Device
Input Voltage
Range
Output Voltage
Range
Contact
Configuration
Rated Output
Current (A)
Standard Part
Number
DC switching MOSFET 3.5–32 Vdc 3–200 Vdc SPST-NO
12 6312AXXMDS-DC3
25 6325AXXMDS-DC3
40 6340AXXMDS-DC3
Zero cross
SCR
3–32 Vdc
24–280 Vac SPST-NO
10 6210AXXSZS-DC3
25 6225AXXSZS-DC3
40 6240AXXSZS-DC3
50 6250AXXSZS-DC3
48–480 Vac SPST-NO 25 6425AXXSZS-DC3
50 6450AXXSZS-DC3
90–280 Vac
24–280 Vac SPST-NO
10 6210AXXSZS-AC90
25 6225AXXSZS-AC90
40 6240AXXSZS-AC90
50 6250AXXSZS-AC90
75 6275AXXSZS-AC90
48–480 Vac SPST-NO 10 6410AXXSZS-AC90
25 6425AXXSZS-AC90
Triac 3–32 Vdc
24–280 Vac DPST-NO 10 6210BXXTZB-DC3*
48–480 Vac SPST-NO 25 6425AXXTZB-DC3*
DPST-NO 25 6425BXXTZB-DC3*
* Blade terminals.
Part Number Explanation
Series
6000
Output Voltage
2 = 24 to 280 Vac
3 = 3 to 200 Vdc
4 = 48 to 530 Vac
Current Rating
10 = 10 A 40 = 40 A
12 = 12 A 50 = 50 A
25 = 25 A 75 = 75 A
Contact
Conguration
AXX = SPST-NO
BXX = DPST-NO
Output Type
M = MOSFET
S = SCR
T = TRIAC
Switching Type
D = DC Switching
Z = Zero Cross
Connection Type
B = Blade Terminals
S = Screw Terminals
Input Voltage
AC90 = 90–280 Vac
DC3 = 3–32 Vdc
Feature Benefit
Solid state circuitry Involves no moving parts
Optically coupled circuit Provides isolation between input and output circuits
Internal snubber Helps protect the relay’s internal circuit from high
voltage transients
Fingersafe® terminals Helps prevent an operator from touching live circuits
6000 Series Relays
Description Magnecraft® Solid State Relays
6000
SPST-NO, 10 A to 75 A
DPST-NO, 10 A to 25 A
14
Specifications (UL 508)
Part Number 62••AXXSZS-AC90 64••AXXSZS-AC90 62••AXXSZS-DC3 64••AXXSZS-DC3
Input Characteristics
Control Voltage Range 90–280 Vac (rms) 3–32 Vdc 4–32 Vdc
Maximum Turn-On Voltage 90 Vac (rms) 3 Vdc 4 Vdc
Minimum Turn-Off Voltage 10 Vac (rms) 1 Vdc
Nominal Input Impedance 60 KW N/A
Typical Input Current 2 mA at 120 V (rms), 4 mA at 240 V (rms) 10 mA at 12 Vdc 15 mA DC
Output Characteristics
Switching Device SCR
Switching Type Zero Cross
Contact Configuration SPST-NO
Output Current Range 10–75 A 10–25 A 10–50 A 25–50 A
Output Voltage Range (47–63 Hz) 24–280 Vac (rms) 48–530 Vac (rms) 24–280 Vac (rms) 48–530 Vac (rms)
Transient Over-voltage 600 Vpk 1200 Vpk 600 Vpk 1200 Vpk
Maximum Off-State Leakage Current at Rated Voltage 10 mA (rms) 1 mA (rms)
Minimum Off-State dv/dt at Maximum Rated Voltage 500 V/us
Minimum Load Current 40 mA (rms) 150 mA (rms)
Maximum Surge Current (16�6 ms) 10 A: 120 Apk;
25 A: 250 Apk;
40/50 A: 625 Apk;
75 A: 1000 Apk
10 A: 140 Apk;
25 A: 250 Apk
10 A: 120 Apk;
25 A: 250 Apk;
40/50 A: 625 Apk
25 A: 250 Apk;
50 A: 625 Apk
Maximum On-State Voltage Drop at Rated Current 1�6 V (rms) 1�7 V (rms) 1�6 V (rms)
Maximum I²T for Fusing (8�3 ms) 10 A: 60 A²sec;
25 A: 260 A²sec;
40/50A: 1620 A²sec;
75A: 4150 A²sec
10 A: 81 A²sec;
25 A: 260 A²sec
10 A: 60 A²sec;
25 A: 260 A²sec;
40/50 A: 1620 A²sec
25 A: 260 A²sec;
50 A: 1620 A²sec
Minimum Power Factor (with Maximum Load) 0�5
General Characteristics
Electrical Life N/A for solid state relays
Maximum Turn-On Time 10 ms 1/2 Cycle
Maximum Turn-Off Time 40 ms 1/2 Cycle
Thermal Resistance (Junction–Case) 10 A: 1�48 °C/W; 25 A: 1�02 °C/W; 40/50A: 0�63 °C/W; 75 A: 0�31 °C/W
Dielectric Strength, Input/Output/Base (50/60 Hz) 4000 Vac (rms)
Minimum Insulation Resistance (at 500 Vdc) 1E+9 W
Maximum Capacitance (Input/Output) 8 pF
Ambient Operating Temperature Range -40–80 °C (derating applies)
Ambient Storage Temperature Range -40–125 °C
Weight (typical) 86�5 g (3 oz)
Input Indication Green LED
Encapsulation Thermally conductive epoxy
Terminals Screw and saddle clamps furnished, unmounted
Recommended Terminal Screw Torque Range 6-32 Screws: 10 lb-in; 8-32 & 10-32 Screws: 20 lb-in (Screws dry without grease)
Safety Cover Yes
Wire Clamp Plates Yes
Agency Approvals UL Recognized (E258297); CE (per IEC 60950 and 61000); CSA (168986); RoHS
Specications Magnecraft® Solid State Relays
6000
SPST-NO, 10 A to 75 A
DPST-NO, 10 A to 25 A
15
Specifications (UL 508)
Part Number 6••••XXTZB-DC3 63••AXXMDS-DC3
Input Characteristics
Control Voltage Range 3–32 Vdc 3�5–32 Vdc
Maximum Turn-On Voltage 3 Vdc 3�5 Vdc
Minimum Turn-Off Voltage 1 Vdc
Nominal Input Impedance Active current limiter 1k W
Typical Input Current 25 A: 16 mA;
10 A: 2 mA
10 mA
Output Characteristics
Switching Device Triac MOSFET
Switching Type Zero Cross DC switching
Contact Configuration SPST-NO, DPST-NO SPST-NO
Output Current Range 10A–25A 12A–40A
Output Voltage Range 10 A: 24–280 Vac;
25 A: 48–480 Vac
3–200 Vdc
Transient Over-voltage 600 Vpk 200 Vpk
Maximum Off-State Leakage Current at Rated Voltage 10 mA < 1 mA
Minimum Off-State dv/dt at Maximum Rated Voltage 250 V/us N/A
Minimum Load Current–Maintain 80 mA N/A
Maximum Surge Current (16�6 ms) 250 A 12 A: 27 A;
25 A: 50 A;
40 A: 90 A
Maximum On-State Voltage Drop at Rated Current 1�6 Vac (rms) 2�8 Vdc (at 40 A load)
Maximum I²T for Fusing (8�3 ms) 200 A2s N/A
Minimum Power Factor (with Maximum Load) 0�5 0�95
General Characteristics
Electrical Life N/A for solid state relays
Maximum Turn-On Time 1/2 cycle 300 us
Maximum Turn-Off Time 1/2 cycle 1 ms
Thermal Resistance (Junction–Case) 1�2 °C/W 1�06 °C/W
Dielectric Strength, Input/Output/Base (50/60 Hz) 4000 Vac (rms) 2500 Vac (rms)
Minimum Insulation Resistance (at 500 Vdc) 1E+9 W
Maximum Capacitance (Input/Output) 10 pF
Ambient Operating Temperature Range -30–80 °C (derating applies) -40–80 °C (derating applies)
Ambient Storage Temperature Range -40–100 °C -40–100 °C
Weight (typical) 100 g (3�52 oz) 110 g (3�88 oz)
Input Indication Green LED
Encapsulation Epoxy
Terminals 1/4 in (6�35 mm); 3/16 in (4�74 mm) Input: M3�5;
Output: M4 (12 A), M6 (25/40 A)
Recommended Terminal Screw Torque Range N/A 20 lb-in; 10 lb-in
Safety Cover Yes (IP20)
Wire Clamp Plates N/A Yes
Agency Approvals UL Recognized (E258297), CSA (168986), CE (per IEC 60947-4-1), RoHS
Specications (continued) Magnecraft® Solid State Relays
6000
SPST-NO, 10 A to 75 A
DPST-NO, 10 A to 25 A
16
INPUT
+
INPUT
OUTPUT
OUTPUT
POWER SOURCE
POWER SUPPLY
SSR
-
LOAD
(-) 14 (-)
(+) 23 (+)
MOSFET ONLY
0
2
10 A
Load Current (Arms)
Power Dissipation
Base Plate Temp (°C)
Ambient Temp. (°C)
368 10 20 40 60 80
4
120
115
110
8
12
3°C/W
5°C/W
7°C/W
9°C/W
NO HEATSINK
0
10
50 A
Load Current (Arms)
Power Dissipation
Base Plate Temp (°C)
Ambient Temp. (°C)
20 30 40 50 20 40 60 80
20
120
100
90
40
60
110
NO HEATSINK
1°C/W
2°C/W
0.5°C/W
1.5°C/W
0
5
10
15
20
25
30
5
25 A
Load Current (Arms)
Power Dissipation
Base Plate Temp (°C)
Ambient Temp. (°C)
10 15 20 25 20 40 60 80
120
110
100
95
NO HEATSINK
1°C/W
2°C/W
3°C/W
0
15
75 A
Load Current (Arms)
Power Dissipation
Base Plate Temp (°C)
Ambient Temp. (°C)
30 45 60 75 20 40 60 80
40
120
110
95
80
120
100
0.3°C/W0.5°C/W
1°C/W
12 A MOSFET
25/40 A MOSFET
0
50
40
30
20
10
10 20 30 40 50 60 70 80
Ambient Temp. (°C)
Load Current (Arms)
Mounted on heat sink with
0.5 ºC/W thermal resistance
0
50
40
30
20
10
10 20 30 40 50 60 70 80
Ambient Temp. (°C)
Load Current (Arms)
Mounted on heat sink with
3.2 ºC/W thermal resistance
Mounted on heat sink with
0.5 ºC/W thermal resistance
4.2
(0.163)
Terminal
Input
Output
Min. Max.
3.5
(0.138)
5
(0.197)
6.35
(0.25)
10 max
0.393
mm
in
OUTPUT
Cu 75°C
max. ambient
25°C
0..50A 50..125A
1.4
(35.9)
2.28
(57.91)
1.74
(44.14)
1.7
(43.42)
Blade Terminals
Screw Terminals
INPUT
OUTPUT
INPUT
OUTPUT
1.87
(47.5)
1.74
(44.14)
0.41
(10.5)
0.125
(3.2)
1 (-) 2 (+)
4 (-) 3 (+)
1 (-) 2 (+)
5 (-) 6 (+)
4 (-) 3 (+)
0.192
(4.9) DIA.
Side View
(25 & 40 A MOSFET versions only)
Side View
Dimensions,
Wiring Diagram,
De-Rating Curves
Magnecraft® Solid State Relays
6000
SPST-NO, 10 A to 75 A
DPST-NO, 10 A to 25 A
Dimensions: Inches (Millimeters)
Wiring Diagram
De-Rating Curves
17
Relay Mounting Example
Description
Thermal management is a fundamental consideration in the design and use of solid
state relays (SSRs) because of the contact dissipation (typically 1 W per ampere).
Therefore, it is vital that sufficient heat sinking is provided, or the life and switching
reliability of the SSR will be compromised.
The SSR-HS-1 heat sink maximizes heat dissipation and helps ensure reliable
operation when properly selected for the specific application. For ease of installation,
all mounting holes are pre-drilled and tapped.
The SSR-TP-1 simplifies installation with a simple peel-and-stick solution, which does
not require messy thermal grease.
Description Function Weight For Use With Relays Packaging
Minimum
Standard Part
Number
Heat sink Maximizes heat dissipation 558�5 g (19�7 oz) 6000 Series Relays
(rated up to 50 A) 1 SSR-HS-1
Thermal pad
Simplifies installation with a simple
peel-and-stick solution, which does
not require messy thermal grease
N/A 6000 Series Relays
(rated up to 50 A) 10 SSR-TP-1
6000 Series
relay
SSR-TP-1
Thermal pad
SSR-HS-1
Heat sink
SSR-HS-1
SSR-TP-1
Description Magnecraft® Solid State Relays
Accessories for 6000 Series
Heat Sink, SSR-HS-1
Thermal Pad, SSR-TP-1
18
De-Rating Curves (when used with thermal pad and heat sink)
0
10
100
20
30
40
60
AMBIENT TEMPERATURE (ºC)
50 6030 70402010 80 90
50
0
10
100
20
30
40
60
AMBIENT TEMPERATURE (ºC)
50 6030 70402010 80 90
50
200 6040 80
0.2
100 120 140
0.4
0.6
0.8
1.0 0.92
0.69
0.55 0.52
0.51
DISSIPATION (W)
THERMAL RESISTANCE (ºC/W)
50A 6000 Series Relay without Fan
Thermal Resistance vs Power Dissipation
CURRENT RATING (A)CURRENT RATING (A)
37
28
47
38
24
19 14
Load Current vs Ambient Temperature (100% Duty Cycle)
50A 6000 Series Relay with (70 Cfm) Fan
2.22
(56.3)
1.72
(43.63)
0.88
(22.45)
0.29
(7.35)
INSTALLATION:
1. RELEASE LINER ON ONE
SIDE OF THE THERMAL PAD,
PLACE UNDERNEATH CLASS
6 SOLID STATE RELAY.
2. RELEASE LINER ON OTHER
SIDE OF THERMAL PAD AND
PLACE RELAY AND PAD ONTO
HEAT SINK OR PANEL.
SSR-TP-1
TOP VIEW
FRONT VIEW
4.73
(120.14)
1.75
(44.45)
0.13
(3.18)
0.19
(4.95)
3.86
(97.92)
0.34
(8.69)
1.99
(50.63)
0.07
(1.69)
2.65
(67.31)
5.51
(139.95)
SIDE VIEW
0.24
(6.04)
SSR-HS-1
Dimensions,
De-Rating Curves
Magnecraft® Solid State Relays
Accessories for 6000 Series
Heat Sink, SSR-HS-1
Thermal Pad, SSR-TP-1
Dimensions: Inches (Millimeters)
19
Description
The 70S2 Series are miniature solid state relays ideal for small space applications.
They are available in panel and PCB mount, which increases the level of flexibility
for designers.
Switching
Type
Switching
Device
Input Voltage
Range
Output Voltage
Range
Rated Output
Current (A)
Terminal
Style
Mounting
Style
Standard Part
Number
DC switching MOSFET 3–15 Vdc 3–60 Vdc
3 Solder PCB Mount 70S2-01-A-03-V
5Blade Panel Mount 70S2-01-A-05-N
Screw Panel Mount 70S2-01-A-05-S
9–30 Vdc 3–60 Vdc 5 Screw Panel Mount 70S2-02-A-05-S
Zero cross Triac
3–30 Vdc
24–140 Vac
4 Solder PCB Mount 70S2-04-B-04-F
6Blade Panel Mount 70S2-04-B-06-N
Screw Panel Mount 70S2-04-B-06-S
12 Blade Panel Mount 70S2-04-B-12-N
Screw Panel Mount 70S2-04-B-12-S
25 Screw Panel Mount 70S2-03-B-25-S
24–280 Vac
6Blade Panel Mount 70S2-04-C-06-N
Screw Panel Mount 70S2-04-C-06-S
10 Solder PCB/Panel Mount 70S2-04-C-10-M
12
Blade Panel Mount 70S2-04-C-12-N
Screw Panel Mount 70S2-04-C-12-S
Screw Panel Mount 70S2-06-C-12-S
25 Screw Panel Mount 70S2-03-C-25-S
3–32 Vdc
24–140 Vac 3 Solder PCB Mount 70S2-04-B-03-V
24–280 Vac 3 Solder PCB Mount 70S2-04-C-03-V
8–50 Vac 3 Solder PCB Mount 70S2-04-D-03-V
6–30 Vdc 24–280 Vac 12 Screw Panel Mount 70S2-05-C-12-S
70S2 (V) Relay 70S2 (F) Relay
70S2 (M) Relay 70S2 (N) Relay
70S2 (S) Relay
Part Number Explanation
Series:
70S2
Package Type:
F = PCB Mount w/Solder Terminals
M = PCB/Panel Mount w/Solder Terminals
N = Panel Mount w/Blade Terminals
S = Panel Mount w/Screw Terminals
V = PCB Mount w/Solder Terminals
Output Voltage:
A = 3 to 60 Vdc
B = 24 to 140 Vac
C = 24 to 280 Vac
D = 8 to 50 Vac
Output Current:
03 = 3 A
04 = 4 A
05 = 5 A
06 = 6 A
10 = 10 A
12 = 12 A
25 = 25 A
Input Voltage:
01 = 3 to 15 Vdc
02 = 9 to 30 Vdc
03 = 3 to 30 Vdc
04 = 3 to 30 Vdc
05 = 6 to 30 Vdc
06 = 6 to 30 Vdc
Feature Benefit
Solid state circuitry Involves no moving parts
Optically coupled circuit Provides isolation between input and output circuits
Internal snubber Helps protect the relay’s internal circuit from high
voltage transients
Small package size Ideal for small spaces
Panel and PCB mounting Increases functionality and ease of use
Description Magnecraft® Solid State Relays
70S2
SPST-NO, 3 A to 25 A
20
Specifications (UL 508)
Part Number 70S2-01-A 70S2-02-A 70S2-03-B 70S2-03-C
Input Characteristics
Control Voltage Range 3–15 Vdc 9–30 Vdc 3–30 Vdc
Must Release Voltage 1 Vdc
Typical Input Current 5–40 mA 5–17 mA 7–16 mA 6–10 mA
Maximum Reverse Control Voltage 3 Vdc
Output Characteristics
Switching Device MOSFET Triac
Switching Type DC Switching Zero Cross
Contact Configuration SPST-NO
Output Voltage Range 3–60 Vdc 24–140 Vac 24–280 Vac
Peak Blocking Voltage 105 Vdc 400 Vac 600 Vac
Maximum Rate of Rise Off State Voltage (dv/dt) N/A 300 V/us
Output Current Range (rms) 3–5 A 5 A 25 A 25 A
Minimum Load Current–Maintain On N/A 100 mA
Non-Repetitive Surge Current (8�3 ms) 3 A: 5 A (1 s); 5 A: 7 A (1 s) 300 A
Maximum Off State Leakage Current (rms) 10 mA 6 mA
Typical On State Voltage Drop (rms) 3 A: 1�2 Vdc; 5 A: 1�85 Vdc 1�7 Vac
Maximum Turn-On Time 75 ms 8�3 ms
Maximum Turn-Off Time 3 A: 500 ms; 5 A: 75 ms 8�3 ms
General Characteristics
Electrical Life N/A for solid state relays
Thermal Resistance (Junction–Case) 3 A: 0�5 °C/W; 5/25 A: 4 °C/W
Dielectric Strength (Input–Output) 3 A: 4000 Vac; 5 A: 2500 Vac 3000 Vac
Dielectric Strength (Terminals–Chassis) 3 A: 4000 Vac; 5 A: 2500 Vac 3000 Vac
Operating Temperature Range -40–+100 °C
Storage Temperature Range -40–+125 °C
Weight F/M: 35 g (1�2 oz):
N/S: 47 g (1�7 oz);
V: 25 g (0�9oz)
Agency Approvals UL Recognized (E258297); CSA (040787); RoHS
Specications Magnecraft® Solid State Relays
70S2
SPST-NO, 3 A to 25 A
21
Specifications (UL 508)
Part Number 70S2-04-B 70S2-04-C 70S2-04-D 70S2-05-C 70S2-06-C
Input Characteristics
Control Voltage Range 3 A: 3–32 Vdc; 4/6/10/12 A: 3–30 Vdc 6–30 Vdc 3–30 Vdc
Must Release Voltage 1 Vdc
Typical Input Current 3 A: 1–19 mA; 4/6/10/12 A: 7–16 mA 6–10 mA 1–17 mA
Maximum Reverse Control Voltage 3 Vdc
Output Characteristics
Switching Device Triac
Switching Type Zero Cross
Contact Configuration SPST-NO
Output Voltage Range 24–140 Vac 24–280 Vac 8–50 Vac 24–280 Vac
Peak Blocking Voltage 400 Vac 600 Vac 200 Vac 600 Vac
Maximum Rate of Rise Off State Voltage (dv/dt) 300 V/us
Output Current Range (rms) 3–12 A 3–12 A 3 A 12 A
Minimum Load Current–Maintain On 3/4/6 A: 75 mA; 10/12 A: 100 mA
Non-Repetitive Surge Current (8�3 ms) 3/4/6 A: 60 A; 10/12 A: 150 A
Maximum Off State Leakage Current (rms) 6 mA 10 mA 6 mA
Typical On State Voltage Drop (rms) 1�6 Vac
Maximum Turn-On Time 8�3 ms
Maximum Turn-Off Time 8�3 ms
General Characteristics
Electrical Life N/A for solid state relays
Thermal Resistance (Junction–Case) 3 A: 0�5 °C/W ; 4/6/10/12 A: 4 °C/W 2�4 °C/W
Dielectric Strength (Input–Output) 3 A: 4000 Vac; 4/6/10/12 A: 3000 Vac
Dielectric Strength (Terminals–Chassis) 3 A: 4000 Vac; 4/6/10/12 A: 3000 Vac
Operating Temperature Range -40–+100 °C (derating applies)
Storage Temperature Range -40–+125 °C
Weight F/M: 35 g (1�2 oz):
N/S: 47 g (1�7 oz);
V: 25 g (0�9 oz);
Agency Approvals UL Recognized (E258297); CSA (040787); RoHS
Specications (continued) Magnecraft® Solid State Relays
70S2
SPST-NO, 3 A to 25 A
22
Dimensions: inches (millimeters)
1.7
(43.2)
1.02
(26.0)
0.9
(22.9)
1.1
(27.9)
0.2
(5.1)
0.3
(7.6)
0.4
(10.2)
0.16
(4.1)
0.4
(10.2)
0.04 DIA.
(1.0)
+
-
0.032
(0.8)
0.02
(0.5)
OUTPUT
INPUT
0.2
(4.4)
1.2
(31.2)
1.9
(47.5)
2.2
(55.9)
0.4
(10.2)
1.0
(26.2)
0.9 MAX
(22.9)
0.5
(12.7)
0.9
(22.9)
0.187
(4.75)
0.25
(6.5)
0.2
(5.1)
1.2
(31.2)
0.4
(10.2)
0.3
(7.6)
0.6
(15.2)
0.5
(11.4)
0.3
(7.6)
0.2
(4.7)
1.0
(26.2)
0.8
(20.7)
1.2
(31.7)
0.03 (0.76)
70S2 (F) 70S2 (M)
70S2 (N)
70S2 (V)
70S2 (S)
0.2
(4.4)
1.2
(31.2)
1.9
(47.5)
2.2
(55.9)
1.0
(26.2)
0.9 MAX
(22.9)
0.4
(10.2)
0.6
(15.2) 0.2
(5.1)
0.3
(7.6)
0.5
(11.4)
0.3
(7.6)
0.3
(6.4)
INPUT
OUTPUT
INPUT
OUTPUT
0.03 (0.76)
0.8
(19.1)
0.9
(22.9)
+
-
+
-
+
-
0.4
(10.2)
0.6
(15.3) 0.2
(4.5)
2.2
(55.9)
1.9
(47.5)
1.2
(31.2)
1.0
(26.2)
OUTPUT
INPUT
OUTPUTINPUT
– + – +
(-)
(+)
(-)
(+)
(-)
(+)
(-)
(+)
INPUT INPUT
INPUT
INPUT
OUTPUT OUTPUT
OUTPUT
OUTPUT
Magnecraft® Solid State Relays
70S2
SPST-NO, 3 A to 25 A
Dimensions
23
Wiring Diagram
INPUT
+
INPUT
OUTPUT
OUTPUT
POWER SOURCE
POWER SUPPLY
SSR
-
LOAD
(-)(-)
(+)(+)
MOSFET ONLY
De-Rating Curves
1.7
(43.2)
1.02
(26.0)
0.9
(22.9)
1.1
(27.9)
0.2
(5.1)
0.3
(7.6)
0.4
(10.2)
0.16
(4.1)
0.4
(10.2)
0.04 DIA.
(1.0)
+
-
0.032
(0.8)
0.02
(0.5)
OUTPUT
INPUT
0.2
(4.4)
1.2
(31.2)
1.9
(47.5)
2.2
(55.9)
0.4
(10.2)
1.0
(26.2)
0.9 MAX
(22.9)
0.5
(12.7)
0.9
(22.9)
0.187
(4.75)
0.25
(6.5)
0.2
(5.1)
1.2
(31.2)
0.4
(10.2)
0.3
(7.6)
0.6
(15.2)
0.5
(11.4)
0.3
(7.6)
0.2
(4.7)
1.0
(26.2)
0.8
(20.7)
1.2
(31.7)
0.03 (0.76)
70S2 (F) 70S2 (M)
70S2 (N)
70S2 (V)
70S2 (S)
0.2
(4.4)
1.2
(31.2)
1.9
(47.5)
2.2
(55.9)
1.0
(26.2)
0.9 MAX
(22.9)
0.4
(10.2)
0.6
(15.2) 0.2
(5.1)
0.3
(7.6)
0.5
(11.4)
0.3
(7.6)
0.3
(6.4)
INPUT
OUTPUT
INPUT
OUTPUT
0.03 (0.76)
0.8
(19.1)
0.9
(22.9)
+
-
+
-
+
-
0.4
(10.2)
0.6
(15.3) 0.2
(4.5)
2.2
(55.9)
1.9
(47.5)
1.2
(31.2)
1.0
(26.2)
OUTPUT
INPUT
OUTPUTINPUT
– + – +
(-)
(+)
(-)
(+)
(-)
(+)
(-)
(+)
INPUT INPUT
INPUT
INPUT
OUTPUT OUTPUT
OUTPUT
OUTPUT
Dimensions: inches (millimeters)
Load Current vs Ambient Temperature (100% Duty Cycle)
16
12
20
24
28
32
8
4
10
0
10
25
30
30 50 70
20 40 60 80
LOAD CURRENT IN AMPERES
MAX. AMBIENT TEMPERATURE IN °C
10, 12 & 25 A
4
3
5
6
7
8
2
1
10
0
30 50 70
20 40 60 80
4 & 6 A
LOAD CURRENT IN AMPERES
MAX. AMBIENT TEMPERATURE IN °C
4
3
5
6
7
8
2
1
10
0
30 50 70
20 40 60 80
3 & 5 A
LOAD CURRENT IN AMPERES
MAX. AMBIENT TEMPERATURE IN °C
Magnecraft® Solid State Relays
70S2
SPST-NO, 3 A to 25 A
Dimensions (continued),
Wiring Diagram,
De-Rating Curves
24
EMR vs SSR Technology
ARMATURE
MECHANICAL
CONTACTS
COIL
MAGNETIC
COUPLING
EMR
OPTICAL
COUPLING
CURRENT
LIMITER
LED
PHOTODETECTOR
SNUBBER
TRIGGER
OUTPUT
DEVICE
(SSR)
SSR
Application Data Magnecraft® Solid State Relays
Definition
A solid state relay (SSR) can perform many tasks that an electromechanical relay
(EMR) can perform� The SSR differs in that it has no moving mechanical parts� It is
essentially an electronic device that relies on the electrical and optical properties of
semiconductors to achieve its isolation and switching function�
Principle of Operation
SSRs are similar to electromechanical relays, in that both use a control circuit and a
separate circuit for switching the load� When voltage is applied to the input of the SSR,
the relay is energized by a light emitting diode� The light from the diode is beamed
into a light sensitive semiconductor which conditions the control circuit to turn on the
output solid state switch� In the case of zero voltage crossover relays, the output solid
state switch is turned on at the zero crossing of AC voltage� Removal of the input
power disables the control circuit and the solid state switch also turns off when the
load current passes through the zero point of its cycle� Zero cross is only applied to AC
switching circuits� DC switching circuits operate at an instant on/off rate�
Advantages
When used correctly in the intended application, the SSR provides many of the
characteristics that are often difficult to find in the EMR: a high degree of reliability,
long service life, significantly reduced electromagnetic interference, fast response
and high vibration resistance are significant benefits of the SSR� The SSR has
no moving parts to wear out or arcing contacts to deteriorate, which are often the
primary cause of failure with an EMR�
Long life (reliability) > 1E+9 operations
Zero voltage turn on, low EMI/RFI
Shock and vibration resistant
Random turn-on, proportional control
No contact bounce
Arc-less switching
No acoustical noise
TTL compatible
Fast response
No moving parts
25
Applications
Since its introduction, SSR technology has gained acceptance in many applications
that had previously been the sole domain of the EMR or contactor� The major
growth areas have come from industrial process control applications; particularly
heat/cool temperature control, motors, lamps, solenoids, valves, and transformers�
The list of applications for the SSR is almost limitless�
Oil & Gas
Burner assemblies, chemical injection systems,
extraction machines, rening machines,
solenoid control
Electronic Appliances
Domestic appliances, cooking appliances,
heating elements, audio equipment
Idustrial Automation
Automotive assembly plants, conveyance,
motor control
Industrial Appliances
Industrial cleaning equipment, commercial
coffee machines, commercial/industrial
cooking equipment
Packaging
Conveyor motors, heaters, product/shrink wrap,
solenoid control
High Reliability
Medical equipment, lifts & escalators, low
switching noise, low electromagnetic
interference, automatic door operation
HVAC & Refridgeration
Anti-condensation equipment, compressor
control, blower control, motorized duct/vent
control
Lighting Control
Trafc signal systems, motorway information
systems, theatrical lighting
Food & Beverage
Commercial/industrial cooking equipment,
ltration systems, bottleing, chillers,
convection ovens
Industrial Heater Control
Plastics industry: drying, extrusion/thermoforming,
heat tracing, solder wave/reow systems, car
wash pumps and dryers
Mining
Blower control, motorized duct/vent control,
drill control, explosive control, mineral extractors
Typical Examples of SSR Applications
Application Data (continued) Magnecraft® Solid State Relays
26
Thermal Considerations
One of the major considerations when using a SSR is properly managing the heat
that is generated when switching currents are higher than 5 A� In this scenario
mount the base plate of the SSR on a good heat conductor, such as aluminum, and
use a good thermal transfer medium, such as thermal grease or a heat transfer pad�
Using this technique, the SSR case to heat sink thermal resistance is reduced to a
negligible value of 0.1 ˚C/W.
Thermal Calculations
To understand the thermal relationship between the output semiconductor junction (TJ)
and the surrounding ambient temperature (TA) measure the temperature gradient, or
drop of temperature, from junction to ambient (TJ - TA); which equals the sum of the
thermal resistances multiplied by the junction power dissipation�
TJ - TA = P (RөJC + RөCS + RөSA)
Where: TJ = Junction Temperature, °C
TA = Ambient Temperature, °C
P = Power Dissipation (ILOAD 3 EDROP) watts
RөJC = Thermal Resistance, junction to case, °C/W
RөCS = Thermal Resistance, case to sink, °C/W
RөSA = Thermal Resistance, sink to ambient, °C/W
To use the equation, the maximum junction temperature of the semiconductor must
be known, typically 125 ˚C, along with the actual power dissipation. When these two
parameters are known, the third can be found as shown in the following example:
Application Data (continued) Magnecraft® Solid State Relays
1) Determine the maximum allowable ambient temperature, for a 1 ˚C/W heat sink
and a 10 A load (12 watts) with a maximum allowable junction temperature (TJ)
of 100 ˚C, and assume a thermal resistance from junction to case (RөJC) of 1�3:
TJ - TA = P (RөJC + RөCS + RөSA)
= 12 (1.3 + 0.1 + 1.0) hence:
= 28.8
2) Determine the required heat sink thermal resistance, for 71.2 ˚C maximum
ambient temperature and a 10 amp load (12 watts):
R
өSA = TJ - TA - (RөJC + RөCS)
P
= 100 - 71.2 - (1.3 + 0.1)
12
= 1 °C/W
3) Determine maximum load current, for 1 ˚C/W heat sink and 71.2 ˚C ambient temperature:
P = TJ - TA
(RөJC + RөCS + RөSA)
= 100 - 71.2 hence:
1.3 + 0.1 + 1.0
= 12 watts
TA = TJ–28.8
= 100–28.8
= 71.2 °C
ILOAD = P
EDROP
12
1.2
= 10 amperes
27
Application Data (continued) Magnecraft® Solid State Relays
Heat Sinking
Thermal management is a fundamental consideration in the design and use of solid
state relays because of the dissipation (typically 1 watt per amp)� It is, therefore,
vital that an adequate heat sink is provided, or the life and switching reliability of the
SSR will be compromised� In order to properly size a heat sink one has to consider
the variables that comprise the thermal resistance Rth (in °C/W)�
Tr: Temperature rise
Ta: Ambient temperature (example 22 °C)
Th: Heat sink temperature (example 54 °C)
Vh: Voltage to heater (example 12 V)
Ih: Current to heater (example 3�5 A)
Ph: Power applied to heat sink
Rth: Thermal resistance (in °C/W)
Therefore:
Tr = Th – Ta = 54 – 22 = 32 °C
Ph =Vh 3 Ih =12 3 3�5 = 42 W
Rth = Tr ÷ Ph = 32 ÷ 42 = 0�76 °C/W
Now that we have calculated the thermal resistance (Rth) we can look at the
thermal resistance vs� heat sink volume curve�
Using this curve with our example above, we can see that a heat sink volume of
approximately 1000 cm3 would be needed to successfully sink the amount of heat
generated by the device�
Thermal Resistance vs Heat Sink Volume
Natural convection at 50 C rise above ambient
10
1
0.1
0.01
THERMAL RESISTANCE OF SINK TO AMBIENT
(ºC/W)
10 100 1,000 10,000 100,000
HEAT SINK VOLUME (cm3)
28
Load Considerations
The major cause of application problems with SSRs is improper heat sinking�
Following that are issues which result from operating conditions which specific loads
impose upon an SSR� Carefully considered the surge characteristics of the load
when designing an SSR as a switching solution�
• Resistive Loads
Loads of constant value of resistance are the simplest application of SSRs� Proper
thermal consideration along with attention to the steady state current ratings is
important for reliable operation�
• DC Loads
DC loads are inductive loads� Place a diode across the load to absorb surges
during turn off�
• Lamp Loads
Incandescent lamp loads, though basically resistive, require special consideration�
Because the resistance of the cold filament is about 5 to 10 percent of the heated
value, a large inrush current can occur� It is essential to verify that this inrush
current is within the surge specifications of the SSR� One must also check that the
lamp rating of the SSR is not exceeded� This is a UL rating based on the inrush of
a typical lamp� Due to the unusually low filament resistance at the time of turn-on, a
zero voltage turn on characteristic is particularly desirable with incandescent lamps�
• Capacitive Loads
These types of loads can be difficult because of their initial appearance as short
circuits� High surge currents can occur while charging, limited only by circuit
resistance� Use caution with low impedance capacitive loads to verify that the dl/dt
capabilities are not exceeded� Zero voltage turn on is a particularly valuable means
of limiting dl/dt with capacitive loads�
• Motors and Solenoids
Motor and solenoid loads require special attention for reliable SSR functionality�
Solenoids have high initial surge currents because their stationary impedance is
very low� Motors also frequently have severe inrush currents during starting and can
impose unusually high voltages during turn off� As a motor’s rotor rotates, it creates
a back EMF that reduces the flow of current� This back EMF can add to the applied
line voltage and create an over voltage condition during turn off� Likewise, verify that
the inrush currents associated with mechanical loads having high starting torque
or inertia, such as fans and flywheels, are within the surge capabilities of the SSR�
Use a current shunt and oscilloscope to examine the duration of the inrush current�
Application Data (continued) Magnecraft® Solid State Relays
29
Transformers
In controlling transformers, consider the characteristics of the secondary load because
they reflect the effective load on the SSR� Voltage transients from secondary loads
circuits, similarly, are frequently transformers and can be imposed on the SSR�
Transformers present a special challenge in that, depending on the state of the
transformer flux at the time of turn off, the transformer may saturate during the first
half-cycle of subsequently applied voltage� This saturation can impose a very large
current (10 to 100 times rated typical) on the SSR which far exceeds its half cycle
surge rating� SSRs having random turn on may have a better chance of survival than
a zero cross turn on device for they commonly require the transformer to support only
a portion of the first half cycle of the voltage� On the other hand, a random turn on
device will frequently close at the zero cross point and then the SSR must sustain the
worst case saturation current� A zero cross turn on device has the advantage that it
turns on in a known mode and will immediately demonstrate the worst case condition�
The use of a current shunt and an oscilloscope is recommended to verify that the half
cycle surge capability is not exceeded�
A rule of thumb in applying an SSR to a transformer load is to select an SSR having
a half cycle current surge rating greater than the maximum applied line voltage
divided by the transformer primary resistance� The primary resistance is usually easily
measured and can be relied on as a minimum impedance limiting the first half cycle of
inrush current� The presence of some residual flux plus the saturated reactance of the
primary will then further limit, in the worst case, the half cycle surge safely within the
surge rating of the SSR�
Switching Devices
The power family of semiconductors consists of several switching devices� The
most widely used of this family are metal-oxide semiconductor field effect transistors
(MOSFETs), silicon controlled rectifiers (SCRs), Triac, and Alternistor Triac� In many
applications these devices perform key functions and therefore it is imperative that one
understand their advantages as well as their shortcomings to properly design a reliable
system� Once applied correctly SSRs are an asset in meeting environmental, speed,
and reliability specifications which their electromechanical counterparts could not fulfill�
• MOSFET
A power MOSFET is a specific type of metal oxide semiconductor field-effect transistor
(MOSFET) designed to handle large amounts of power� It is a vertical structured
transistor capable of sustaining high blocking voltage and high current� Power
MOSFET’s are used in DC switching applications� Care must be taken to ensure that
there is proper polarity for all DC ports� Failure to do so can lead to permanent device
damage�
• Triac
A TRIAC, is an electronic component approximately equivalent to two silicon-controlled
rectifiers joined in inverse parallel (paralleled but with the polarity reversed) and with
their gates connected together� This results in a bidirectional electronic switch which
can conduct AC current only� The Triac is ideal for switching non-reactive loads�
• Alternistor Triac
The Alternistor has been specifically designed for applications that switch highly
inductive AC loads� A special chip offers similar performance as two SCRs wired
inverse parallel (back-to-back), providing better turn-off behavior than a standard Triac�
The Alternistor Triac is an economical solution; ideal for switching inductive AC loads�
• SCR
The SCR (silicon-controlled rectifier) acts as a switch, conducting when its gate
receives a current pulse, and continue to conduct for as long as it is forward biased�
The SCR is ideal for switching all types of AC loads�
Application Data (continued) Magnecraft® Solid State Relays
30
The Magnecraft Range of Solid State Relays
Depending on the application, the Magnecraft line of solid state relays offers a
number of advantages over electromechanical relays, including longer life cycles,
less energy consumption and reduced maintenance costs�
Selecting a Solid State Relay
The list below is an example of the specifications to look for when selecting a solid
state relay�
Use the catalog specifications or online parametric search to determine a
recommended part number (www.magnecraft.com)�
Selection Guide Magnecraft® Solid State Relays
Class 1, Division 2 certification (y/n):
Input voltage:
Output voltage:
Load rating:
Contact configuration:
Ambient temperature:
In-rush currents:
Mounting style:
__________________
__________________
__________________
__________________
__________________
__________________
__________________
__________________
More About Class 1, Division 2
Certified Products
Class 1, Division 2 is a classification which
was developed by American National
Standards Institute (ANSI) to provide
requirements for the design and construction of
electrical equipment and parts that will be used
in hazardous locations� Certified components, when used properly, are not
capable of igniting the surrounding atmosphere�
Class 1, Division 2 components may be required in environments which
may contain specific flammable gases, combustible dust or fibers that can
ignite� The 861H SSR carries a Class 1, Division 2 (Categories: A, B, C, D
and Temperature code: T5) approval from Underwriters Laboratories�
31
Website Guide Magnecraft® Solid State Relays
The Magnecraft website (www.magnecraft.com) was designed to enable users
to easily find the proper relay to fit design requirements and to help simplify and
shorten workflow�
Easily find the proper relay to fit design
requirements
Online Catalog
Find the right product by choosing specifications, compare products side-by-
side, and view technical specifications, 2D and 3D drawings, and associated
accessories�
Cross Reference Search
Search our comprehensive database to identify products by manufacturer and
part number, and link directly to part specifications�
3D CAD Library
View, email, download or insert a file directly into your open CAD software pane
and select from 18 different file formats�
Order Free Samples
Magnecraft offers free samples as a courtesy to individuals and companies
evaluating our products in their designs and applications� Sample orders are
subject to approval�
Simplify and shorten workflow
Interactive Tools
View interactive demonstrations such as our Time Delay Relay Interactive Demo
(left) which visually demonstrates the ten different timing functions offered on
Magnecraft time delay relays�
Distributor Inventory Search
Search authorized distributors’ current Magnecraft inventory and buy online�
(Buy online not available for all distributors)�
Time Delay Relay Demo
3D Models
The information and dimensions in this catalog are provided for the convenience of our customers�
While this information is believed to be accurate, Schneider Electric reserves the right to make
updates and changes without pr ior notication and assumes no liability for any errors or omissions.
Design: Schneider Electric
Photos: Schneider Electric
© 2010 Schneider Electric� All Rights Reser ved�
October 2010
8501CT1002
Schneider Electric USA, Inc. www�magnecraft�com
130 0 S� Wolf Rd�
Des Plaines, IL 60018
Tel: 847- 441-25 40