Magnecraft Solid State Relays (R) Catalog 2010 Contents Magnecraft(R) Solid State Relays Series Overview3 861 Relays4 861H Relays 7 SSRDIN Relays10 6000 Series Relays 13 Accessories for 6000 Series Relays17 70S2 Series Relays19 Application Data24 Selection Guide30 Website Guide31 2 Magnecraft(R) Solid State Relays Series Overview 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 Series Defining Feature Style Internal Heat Sink Output Input Contact Current Voltage Configuration Range (A) 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 puckpanel 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 21 861 Relay 861H Relay SSRDIN Relay 6000 Series Relays 70S2 Series Relays 3 Magnecraft(R) Solid State Relays Description 861 SPST-NO, 8 A to 15 A SPST-NC, 10 A Description The 861 is the first complete solid state relay without any moving parts, all in a slim 17.5 mm design. 861 Relay 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 (R) 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 3-150 Vdc Random SCR (2) SPST-NO SPST-NO SPST-NO SPST-NC SPST-NO SPST-NO SPST-NO SPST-NO SPST-NO 15 8 10 10 10 10 10 10 10 861SSR115-DD 861SSR208-DD 861SSR210-DC-2 861SSR210-DC-4 861SSR210-AC-2 861SSR210-DC-1 861SSR410-DC-1 861SSR210-AC-1 861SSR410-AC-1 3-32 Vdc 24-280 Vac 90-280 Vac 24-280 24-280 48-480 24-280 48-480 3-32 Vdc Zero cross SCR 90-280 Vac Vac Vac Vac Vac Vac (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 Current: 08 = 8 A 10 = 10 A 15 = 15 A Output Voltage: 1 = 3 to 50 Vdc 2 = 24 to 280 Vac 2 = 3 to 150 Vdc (DD Only) 4 = 48 to 480 Vac 4 Input Voltage: AC = 90 to 280 Vac DC = 3 to 32 Vdc DD = 3.5 to 32 Vdc Contact Configuration & Switching Type: 1 = SPST-NO, Zero Cross 2 = SPST-NO, Random 4 = SPST-NC, Random Null = SPST-NO, DC Switching Magnecraft(R) Solid State Relays Specifications 861 SPST-NO, 8 A to 15 A SPST-NC, 10 A Specifications (UL 508) Part Number 861SSR***-DD 861SSR***-DC-* 861SSR***-AC-* Input Voltage Range 3.5-32 Vdc 3-32 Vdc 90-280 Vac Must Release Voltage 1 Vdc Nominal Input Impedance Current regulator Typical Input Current at 5 Vdc 12 mA 16 mA; 12 mA (861SSR210-DC-4) 12 mA Reverse Polarity Protection Yes Yes N/A 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 mW N/A Maximum Turn-On Time 5 ms 8.3 ms Maximum Turn-Off Time 5 ms 8.3 ms Maximum I T for Fusing N/A 1250 Asec (861SSR210); 850 Asec (861SSR410) Input Characteristics 10 Vac 16-25 kW Output Characteristics 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 Internal Heat Sink 4.0 C/W Dielectric Strength (Input-Output) 2500 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 mm) maximum 0.66 C/W 4000 V (rms) 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 5 Magnecraft(R) Solid State Relays Dimensions, Wiring Diagram, De-Rating Curves 861 SPST-NO, 8 A to 15 A SPST-NC, 10 A Dimensions: Inches (Millimeters) 0.6 (15.8) 0.2 (6) 0.7 (17.6) 0.6 (14.0) 0.56 (14.2) 0.2 (5.0) 0.2 (5) 0.1 (1.7) INPUT 3.5 (90) 1.8 (45.3) 1.4 (35.6) 3.6 (92.4) 2.6 (66.8) 1.4 (35.2) OUTPUT 0.7 (16.0) 0.3 (6.9) 0.6 (14.3) 1.4 (34.6) 2.6 MAX. (65.0) 0.1 (3.4) Wiring Diagram INPUT POWER SUPPLY MOSFET ONLY A2 (-) INPUT A1 (+) SSR OUTPUT + (-) 18 OUTPUT POWER SOURCE (+) 15 LOAD De-Rating Curves 16 LOAD CURRENT IN AMPERES 15 14 13 Note: A minimum spacing of 17.5 mm (0.7 in) between adjacent 861 relays is required in order to acheive the maximum ratings. 12 11 10 9 8 7 6 5 4 3 2 1 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 AMBIENT TEMPERATURE IN C 6 Magnecraft(R) Solid State Relays Description 861H SPST-NO, 8 A to 15 A Description The 861H is the first complete solid state relay approved for use in hazardous locations. Patent pending. Class 1, Division 2 certification for use in hazardous locations. (Temperature code: T5) 861H Relay 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(R) 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. Switching Type Switching Device Input Voltage Range DC switching MOSFET 3.5-32 Vdc Zero cross SCR (2) 3-32 Vdc 90-280 Vac Output Voltage Range Contact Configuration Rated Output Current (A) Standard Part Number 3-50 Vdc 3-150 Vdc 24-280 Vac 48-480 Vac 48-600 Vac 24-280 Vac 48-480 Vac 48-600 Vac SPST-NO SPST-NO SPST-NO SPST-NO SPST-NO SPST-NO SPST-NO SPST-NO 15 8 10 10 10 10 10 10 861HSSR115-DD 861HSSR208-DD 861HSSR210-DC-1 861HSSR410-DC-1 861HSSR610-DC-1 861HSSR210-AC-1 861HSSR410-AC-1 861HSSR610-AC-1 Part Number Explanation Series: 861H Output Type: SSR = SCR SSR = MOSFET (DD Only) 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 Configuration & Switching Type: 1 = SPST-NO, Zero Cross Null = SPST-NO, DC Switching 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 7 Magnecraft(R) Solid State Relays Specifications 861H SPST-NO, 8 A to 15 A Specifications (UL 508) Part Number 861SSR***-DD 861SSR***-DC-* 861SSR***-AC-* Input Voltage Range 3.5-32 Vdc 3-32 Vdc 90-280 Vac Must Release Voltage 1 Vdc Nominal Input Impedance Current regulator Typical Input Current at 5 Vdc 12 mA 16 mA; 12 mA (861SSR210-DC-4) 12 mA Reverse Polarity Protection Yes Yes N/A 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 mW N/A Maximum Turn-On Time 5 ms 8.3 ms Maximum Turn-Off Time 5 ms 8.3 ms Maximum I T for Fusing N/A 1250 Asec (861SSR210); 850 Asec (861SSR410) Input Characteristics 10 Vac 16-25 kW Output Characteristics 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 Internal Heat Sink 4.0 C/W Dielectric Strength (Input-Output) 2500 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 mm) maximum 0.66 C/W 4000 V (rms) 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 8 Magnecraft(R) Solid State Relays Dimensions, Wiring Diagram, De-Rating Curves 861H SPST-NO, 8 A to 15 A Dimensions: Inches (Millimeters) 0.6 (15.8) 0.2 (6) 0.7 (17.6) 0.6 (14.0) 0.56 (14.2) 0.2 (5.0) 0.2 (5) 0.1 (1.7) INPUT 3.5 (90) 1.8 (45.3) 1.4 (35.6) 3.6 (92.4) 2.6 (66.8) 1.4 (35.2) OUTPUT 0.7 (16.0) 0.3 (6.9) 0.6 (14.3) 1.4 (34.6) 2.6 MAX. (65.0) 0.1 (3.4) Wiring Diagram INPUT POWER SUPPLY MOSFET ONLY A2 (-) INPUT A1 (+) SSR OUTPUT + (-) 18 OUTPUT POWER SOURCE (+) 15 LOAD De-Rating Curves 16 LOAD CURRENT IN AMPERES 15 14 13 Note: A minimum spacing of 17.5 mm (0.7 in) between adjacent 861 relays is required in order to acheive the maximum ratings. 12 11 10 9 8 7 6 5 4 3 2 1 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 AMBIENT TEMPERATURE IN C 9 Magnecraft(R) Solid State Relays Description SSRDIN SPST-NO, 10 A to 45 A 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. SSRDIN Relay 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(R) 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 Switching Type Switching Device Input Voltage Range Output Voltage Range Contact Configuration DC switching MOSFET 4-32 Vdc 0-60 Vdc SPST-NO 4-32 Vdc 24-280 Vac SPST-NO 3-32 Vdc 24-280 Vac SPST-NO 4-32 Vdc 48-660 Vac SPST-NO Zero cross SPST-NO SCR 90-280 Vac 24-280 Vac SPST-NO 90-140 Vac 24-280 Vac SPST-NO 90-280 Vac 48-660 Vac SPST-NO SPST-NO Rated Output Current (A) Standard Part Number 10 20 30 10 20 30 45 10 20 30 45 10 20 30 45 10 20 30 45 SSR310DIN-DC22 (1) SSR320DIN-DC22 (1) SSR330DIN-DC22 (1) SSR210DIN-DC22 SSR220DIN-DC22 SSR230DIN-DC22 SSR245DIN-DC45 SSR610DIN-DC22 SSR620DIN-DC22 SSR630DIN-DC22 SSR645DIN-DC45 SSR210DIN-AC22 SSR220DIN-AC22 SSR230DIN-AC22 SSR245DIN-AC45 SSR610DIN-AC22 SSR620DIN-AC22 SSR630DIN-AC22 SSR645DIN-AC45 (1) No agency approvals on MOSFET versions Part Number Explanation Series SSR Output Voltage 2 = SCR, 24 to 280 Vac 3 = MOSFET, 0 to 60 Vdc 10 Current Rating 10 = 10 A 20 = 20 A 30 = 30 A 45 = 45 A Input Voltage AC = 90 to 280 Vac DC = 4 to 32 Vdc Size 22 = 22 mm width 45 = 45 mm width Magnecraft(R) Solid State Relays Specifications SSRDIN SPST-NO, 10 A to 45 A 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 Typical Input Current 8-12 mA 9-11 mA 8-12 mA Output Type SCR MOSFET SCR Switching Type Zero voltage DC switching Zero voltage Output Voltage 24-280 Vac 0-60 Vdc 48-660 Vac Load Current Range 10-45 A 10-30 A 10-45 A Transient Over-Voltage 600 Vpk N/A 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) Maximum On-State Voltage Drop at Rated Current 1.6 Vpk Maximum It For Fusing, (8.3 ms) 10 Vrms 2-4 mA Output Characteristics 24-280 Vac 48-660 Vac 1200 Vpk 600 Vpk 1200 Vpk 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) 10 A: 0.2 Vpk; 20 A: 0.4 Vpk; 30 A: 0.5 Vpk 1.6 Vpk 1.6 Vpk 1.6 Vpk 10 A: 60 Asec; 20 A: 260 Asec; 30/45 A: 1620 Asec N/A 1620 Asec 10 A: 60 Asec; 20 A: 260 Asec; 30/45 A: 1620 Asec 1620 Asec 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 11 Magnecraft(R) Solid State Relays Dimensions, Wiring Diagram, De-Rating Curves SSRDIN SPST-NO, 10 A to 45 A Dimensions: Inches (Millimeters) MOUNTING HOLE 0.17 (4.3) DIA. 0.88 (22.4) INPUT MOUNTING HOLE 0.17 (4.3) DIA. INPUT 2.61 (66.2) 2.51 3.44 (63.7) (87.4) 3.53 (89.7) 3.1 (78.7) 22 mm 3.15 (80.0) OUTPUT 0.88 (22.4) 0.89 (22.6) 0.44 (11.2) OUTPUT 45 mm 1.79 (45.5) 0.88 (22.4) 3.15 (80.0) 3.8 (97.7) 3.1 (78.7) 4.2 (106.7) Wiring Diagram 22 mm INPUT POWER SUPPLY + MOSFET ONLY INPUT OUTPUT 4 (-) a SSR 3 (+) (-) 2 OUTPUT POWER SOURCE (+) 1 LOAD De-Rating Curves Load Current vs Ambient Temperature (100% Duty Cycle) LOAD CURRENT IN AMPS 45 SSRDIN 45 A 40 35 30 SSRDIN 30 A 25 20 SSRDIN 20 A 15 10 SSRDIN 10 A 5 0 10 20 30 40 50 60 70 80 MAXIMUM AMBIENT TEMP. IN C 12 input output 6 mm2 AWG 10 90 a 10 0.39 45 mm input output 4 mm2 10 mm2 AWG 12 AWG 8 Magnecraft(R) Solid State Relays Description 6000 SPST-NO, 10 A to 75 A DPST-NO, 10 A to 25 A 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. 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(R) terminals Helps prevent an operator from touching live circuits 6000 Series Relays Switching Type Switching Device Input Voltage Range Output Voltage Range Contact Configuration DC switching MOSFET 3.5-32 Vdc 3-200 Vdc SPST-NO 24-280 Vac SPST-NO 48-480 Vac SPST-NO 24-280 Vac SPST-NO 48-480 Vac SPST-NO 24-280 Vac DPST-NO SPST-NO DPST-NO 3-32 Vdc SCR Zero cross 90-280 Vac Triac 3-32 Vdc 48-480 Vac Rated Output Current (A) Standard Part Number 12 25 40 10 25 40 50 25 50 10 25 40 50 75 10 25 10 25 25 6312AXXMDS-DC3 6325AXXMDS-DC3 6340AXXMDS-DC3 6210AXXSZS-DC3 6225AXXSZS-DC3 6240AXXSZS-DC3 6250AXXSZS-DC3 6425AXXSZS-DC3 6450AXXSZS-DC3 6210AXXSZS-AC90 6225AXXSZS-AC90 6240AXXSZS-AC90 6250AXXSZS-AC90 6275AXXSZS-AC90 6410AXXSZS-AC90 6425AXXSZS-AC90 6210BXXTZB-DC3* 6425AXXTZB-DC3* 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 Connection Type B = Blade Terminals S = Screw Terminals Current Rating 10 = 10 A 12 = 12 A 25 = 25 A 40 = 40 A 50 = 50 A 75 = 75 A Contact Configuration AXX = SPST-NO BXX = DPST-NO Output Type M = MOSFET S = SCR T = TRIAC Input Voltage AC90 = 90-280 Vac DC3 = 3-32 Vdc Switching Type D = DC Switching Z = Zero Cross 13 Magnecraft(R) Solid State Relays Specifications 6000 SPST-NO, 10 A to 75 A DPST-NO, 10 A to 25 A 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) 1200 Vpk 600 Vpk 1200 Vpk Transient Over-voltage 600 Vpk Maximum Off-State Leakage Current at Rated Voltage 10 mA (rms) Minimum Off-State dv/dt at Maximum Rated Voltage 500 V/us Minimum Load Current 40 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 1 mA (rms) 150 mA (rms) 10 A: 140 Apk; 25 A: 250 Apk 10 A: 120 Apk; 25 A: 250 Apk; 40/50 A: 625 Apk Maximum On-State Voltage Drop at Rated Current 1.6 V (rms) 1.7 V (rms) 1.6 V (rms) Maximum IT for Fusing (8.3 ms) 10 A: 60 Asec; 25 A: 260 Asec; 40/50A: 1620 Asec; 75A: 4150 Asec 10 A: 81 Asec; 25 A: 260 Asec 10 A: 60 Asec; 25 A: 260 Asec; 40/50 A: 1620 Asec Minimum Power Factor (with Maximum Load) 0.5 25 A: 250 Apk; 50 A: 625 Apk 25 A: 260 Asec; 50 A: 1620 Asec 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 14 Magnecraft(R) Solid State Relays Specifications (continued) 6000 SPST-NO, 10 A to 75 A DPST-NO, 10 A to 25 A Specifications (UL 508) Part Number 6****XXTZB-DC3 63**AXXMDS-DC3 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 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 IT for Fusing (8.3 ms) 200 A2s N/A Minimum Power Factor (with Maximum Load) 0.5 0.95 Input Characteristics Output Characteristics 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 Agency Approvals UL Recognized (E258297), CSA (168986), CE (per IEC 60947-4-1), RoHS Yes 15 Magnecraft(R) Solid State Relays Dimensions, Wiring Diagram, De-Rating Curves 6000 SPST-NO, 10 A to 75 A DPST-NO, 10 A to 25 A Dimensions: Inches (Millimeters) 0.192 (4.9) DIA. 0.41 (10.5) 1.4 (35.9) Side View 1 (-) 2.28 (57.91) 1.7 (43.42) Side View 6 (+) OUTPUT 2 (+) OUTPUT 1 (-) 1.87 (47.5) Screw Terminals 4 (-) 5 (-) Blade Terminals 3 (+) INPUT 4 (-) 3 (+) INPUT 1.74 (44.14) 1.74 (44.14) (25 & 40 A MOSFET versions only) 2 (+) 0.125 (3.2) Wiring Diagram INPUT Terminal POWER SUPPLY Input 4 (-) INPUT SSR OUTPUT + MOSFET ONLY 3 (+) Output (-) 1 OUTPUT OUTPUT POWER SOURCE (+) 2 Min. Max. 3.5 (0.138) 4.2 (0.163) 5 (0.197) 6.35 (0.25) 0..50A 10 max 0.393 mm in 50..125A Cu 75C max. ambient 25C LOAD De-Rating Curves 10 A 100 3C/W 2C/W 20 15 110 10 NO HEATSINK 5 10 20 40 60 80 Ambient Temp. (C) 50 A 1C/W 0.5C/W 1.5C/W 40 2C/W NO HEATSINK 0 16 100 110 20 10 20 30 40 Load Current (Arms) 50 20 40 60 80 Ambient Temp. (C) 120 90 Power Dissipation Power Dissipation 60 2 3 6 8 Load Current (Arms) 0 Base Plate Temp (C) 0 120 5 10 15 20 Load Current (Arms) 40 Mounted on heat sink with 3.2 C/W thermal resistance 30 20 10 0 25 20 40 60 80 Ambient Temp. (C) 10 20 30 95 100 1C/W 110 40 120 120 15 30 45 60 Load Current (Arms) 50 60 70 80 25/40 A MOSFET 50 80 40 Ambient Temp. (C) 75 A 0.5C/W 0.3C/W 0 Load Current (Arms) 120 25 75 20 40 60 80 Ambient Temp. (C) Load Current (Arms) 115 4 50 Base Plate Temp (C) 110 8 NO HEATSINK 12 A MOSFET 95 Base Plate Temp (C) 5C/W 25 A 1C/W Power Dissipation Power Dissipation 9C/W 30 3C/W 7C/W Base Plate Temp (C) 12 Mounted on heat sink with 0.5 C/W thermal resistance 40 30 20 Mounted on heat sink with 0.5 C/W thermal resistance 10 0 10 20 30 40 50 Ambient Temp. (C) 60 70 80 Magnecraft(R) Solid State Relays Description Accessories for 6000 Series Heat Sink, SSR-HS-1 Thermal Pad, SSR-TP-1 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. SSR-HS-1 Relay Mounting Example 6000 Series relay SSR-TP-1 Thermal pad SSR-TP-1 SSR-HS-1 Heat sink 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 17 Magnecraft(R) Solid State Relays Dimensions, De-Rating Curves Accessories for 6000 Series Heat Sink, SSR-HS-1 Thermal Pad, SSR-TP-1 Dimensions: Inches (Millimeters) SSR-HS-1 0.19 (4.95) 1.72 (43.63) 5.51 (139.95) 1.75 (44.45) 3.86 (97.92) SSR-TP-1 0.29 (7.35) 0.13 (3.18) TOP VIEW 2.22 (56.3) SIDE VIEW 4.73 (120.14) 0.88 (22.45) 0.07 (1.69) 1.99 (50.63) 2.65 (67.31) 0.24 (6.04) FRONT VIEW 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. 0.34 (8.69) De-Rating Curves (when used with thermal pad and heat sink) Thermal Resistance vs Power Dissipation 60 0.92 0.8 CURRENT RATING (A) THERMAL RESISTANCE (C/W) 1.0 0.69 0.6 0.55 0.4 0.52 0.51 0.2 0 Load Current vs Ambient Temperature (100% Duty Cycle) 20 40 60 80 100 120 140 50 40 CURRENT RATING (A) 28 20 10 60 10 20 30 40 50 60 70 80 AMBIENT TEMPERATURE (C) 90 100 50A 6000 Series Relay without Fan 50 47 40 38 30 24 20 14 19 10 0 18 37 30 0 DISSIPATION (W) 50A 6000 Series Relay with (70 Cfm) Fan 10 20 30 40 50 60 70 80 AMBIENT TEMPERATURE (C) 90 100 Magnecraft(R) Solid State Relays Description 70S2 SPST-NO, 3 A to 25 A 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. 70S2 (V) Relay 70S2 (F) Relay 70S2 (M) Relay Switching Type 70S2 (S) Relay 70S2 (N) Relay Switching Device 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 Input Voltage Range Output Voltage Range 3-15 Vdc 3-60 Vdc 9-30 Vdc 3-60 Vdc Rated Output Current (A) 3 DC switching MOSFET 5 5 4 6 24-140 Vac 12 25 3-30 Vdc Zero cross 6 10 Triac 24-280 Vac 12 25 3 3 Terminal Style Mounting Style Standard Part Number Solder PCB Mount 70S2-01-A-03-V Blade Panel Mount 70S2-01-A-05-N Screw Panel Mount 70S2-01-A-05-S Screw Solder Blade Screw Blade Screw Screw Blade Screw Solder Blade Screw Screw Screw Solder Solder Panel Mount PCB Mount Panel Mount Panel Mount Panel Mount Panel Mount Panel Mount Panel Mount Panel Mount PCB/Panel Mount Panel Mount Panel Mount Panel Mount Panel Mount PCB Mount PCB Mount 70S2-02-A-05-S 70S2-04-B-04-F 70S2-04-B-06-N 70S2-04-B-06-S 70S2-04-B-12-N 70S2-04-B-12-S 70S2-03-B-25-S 70S2-04-C-06-N 70S2-04-C-06-S 70S2-04-C-10-M 70S2-04-C-12-N 70S2-04-C-12-S 70S2-06-C-12-S 70S2-03-C-25-S 70S2-04-B-03-V 70S2-04-C-03-V 3-32 Vdc 24-140 Vac 24-280 Vac 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 Part Number Explanation Series: 70S2 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 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 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 19 Magnecraft(R) Solid State Relays Specifications 70S2 SPST-NO, 3 A to 25 A Specifications (UL 508) Part Number 70S2-01-A 70S2-02-A 70S2-03-B 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 Maximum Reverse Control Voltage 3 Vdc 70S2-03-C Input Characteristics 6-10 mA 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 Minimum Load Current-Maintain On N/A 5A 25 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 20 25 A Magnecraft(R) Solid State Relays Specifications (continued) 70S2 SPST-NO, 3 A to 25 A Specifications (UL 508) Part Number 70S2-04-B 70S2-04-C 70S2-04-D 70S2-05-C 70S2-06-C 6-30 Vdc 3-30 Vdc 6-10 mA 1-17 mA Input Characteristics Control Voltage Range 3 A: 3-32 Vdc; 4/6/10/12 A: 3-30 Vdc Must Release Voltage 1 Vdc Typical Input Current 3 A: 1-19 mA; 4/6/10/12 A: 7-16 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 3-12 A 3A 12 A 10 mA 6 mA Output Current Range (rms) 3-12 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 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 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 2.4 C/W 21 Magnecraft(R) Solid State Relays Dimensions 70S2 SPST-NO, 3 A to 25 A Dimensions: inches (millimeters) 0.6 (15.2) 0.6 (15.2) 0.5 (11.4) 0.2 (5.1) OUTPUT 2.2 (55.9) 1.2 (31.2) INPUT 0.3 (7.6) 0.2 (5.1) 0.3 (7.6) 1.0 (26.2) - 0.2 (4.7) OUTPUT + 70S2 (M) 0.3 (7.6) 0.4 (10.2) 1.0 (26.2) (-) INPUT 0.3 (7.6) 0.2 (4.4) 1.2 (31.7) 0.8 (20.7) 0.5 (11.4) OUTPUT INPUT 1.9 (47.5) 70S2 (F) 0.4 (10.2) 1.2 (31.2) (+) - 0.9 MAX (22.9) INPUT + 0.9 (22.9) 0.2 (4.4) 1.2 (31.2) 0.4 (10.2) 1.0 (26.2) 0.6 (15.3) 1.9 (47.5) OUTPUT 0.187 (4.75) 22 0.03 (0.76) 0.5 (12.7) INPUT 0.9 MAX (22.9) (+) 0.3 (6.4) 0.03 (0.76) 0.25 (6.5) (-) OUTPUT 0.2 (4.5) 1.9 (47.5) 2.2 (55.9) 0.8 (19.1) 70S2 (N) 0.02 (0.5) 0.032 (0.8) - INPUT + (-) OUTPUT (+) 0.16 (4.1) 70S2 (V) OUTPUT INPUT 1.2 (31.2) 2.2 (55.9) 70S2 (S) 0.4 (10.2) 1.0 (26.2) - INPUT + (-) OUTPUT (+) 0.9 (22.9) (10.2) (4.75) 0.02 (0.5) 1.0 (26.2) 0.4 (10.2) 0.032 (0.8) Dimensions (continued), 0.9 MAX (22.9) Wiring Diagram, De-Rating Curves (-) - OUTPUT INPUT + (+) 1.0 (26.2) Magnecraft(R) Solid State Relays - 70S2 INPUT + SPST-NO, 3 A to 25 A (-) 0.9 (22.9) OUTPUT (+) Dimensions: inches (millimeters) 0.16 (4.1) 70S2 (V) 1.7 (43.2) 0.2 (5.1) INPUT - 1.02 (26.0) OUTPUT + - + 0.4 (10.2) 0.3 (7.6) 0.04 DIA. (1.0) 0.4 (10.2) 0.9 (22.9) 1.1 (27.9) Wiring Diagram INPUT POWER SUPPLY MOSFET ONLY - + INPUT OUTPUT (-) SSR (+) (-) OUTPUT POWER SOURCE (+) LOAD De-Rating Curves Load Current vs Ambient Temperature (100% Duty Cycle) 3&5A 6 5 4 3 2 1 10 20 30 40 50 60 70 80 MAX. AMBIENT TEMPERATURE IN C 30 7 6 5 4 3 2 1 0 10, 12 & 25 A 32 LOAD CURRENT IN AMPERES 7 0 4&6A 8 LOAD CURRENT IN AMPERES LOAD CURRENT IN AMPERES 8 10 20 30 40 50 60 70 80 MAX. AMBIENT TEMPERATURE IN C 28 25 24 20 16 12 10 8 4 0 10 20 30 40 50 60 70 80 MAX. AMBIENT TEMPERATURE IN C 23 Application Data Magnecraft(R) 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 Arc-less switching Zero voltage turn on, low EMI/RFI No acoustical noise Shock and vibration resistant TTL compatible Random turn-on, proportional control Fast response No contact bounce No moving parts EMR vs SSR Technology EMR COIL MAGNETIC COUPLING MECHANICAL CONTACTS SSR PHOTODETECTOR OUTPUT DEVICE (SSR) LED CURRENT LIMITER 24 TRIGGER OPTICAL COUPLING SNUBBER ARMATURE Application Data (continued) Magnecraft(R) Solid State Relays 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. Typical Examples of SSR Applications Electronic Appliances Industrial Heater Control Domestic appliances, cooking appliances, heating elements, audio equipment Plastics industry: drying, extrusion/thermoforming, heat tracing, solder wave/reflow systems, car wash pumps and dryers Food & Beverage Lighting Control Commercial/industrial cooking equipment, filtration systems, bottleing, chillers, convection ovens Traffic signal systems, motorway information systems, theatrical lighting High Reliability Mining Medical equipment, lifts & escalators, low switching noise, low electromagnetic interference, automatic door operation Blower control, motorized duct/vent control, drill control, explosive control, mineral extractors HVAC & Refridgeration Oil & Gas Anti-condensation equipment, compressor control, blower control, motorized duct/vent control Burner assemblies, chemical injection systems, extraction machines, refining machines, solenoid control Industrial Appliances Packaging Industrial cleaning equipment, commercial coffee machines, commercial/industrial cooking equipment Conveyor motors, heaters, product/shrink wrap, solenoid control Idustrial Automation Automotive assembly plants, conveyance, motor control 25 Application Data (continued) Magnecraft(R) Solid State Relays 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 (RJC + RCS + RSA) Where: TJ TA P RJC RCS RSA = = = = = = Junction Temperature, C Ambient Temperature, C Power Dissipation (ILOAD 3 EDROP) watts Thermal Resistance, junction to case, C/W Thermal Resistance, case to sink, C/W 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: 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 (RJC) of 1.3: TJ - TA = P (RJC + RCS + RSA) TA = TJ-28.8 = 12 (1.3 + 0.1 + 1.0) hence: = 100-28.8 = 28.8 = 71.2 C 2) Determine the required heat sink thermal resistance, for 71.2 C maximum ambient temperature and a 10 amp load (12 watts): RSA = TJ - TA - (RJC + RCS) 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 26 = = TJ - TA (RJC + RCS + RSA) 100 - 71.2 1.3 + 0.1 + 1.0 = 12 watts ILOAD = hence: P EDROP 12 1.2 = 10 amperes Magnecraft(R) 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: Ta: Th: Vh: Ih: Ph: Rth: Temperature rise Ambient temperature (example 22 C) Heat sink temperature (example 54 C) Voltage to heater (example 12 V) Current to heater (example 3.5 A) Power applied to heat sink Thermal resistance (in C/W) Therefore: Tr = Th - Ta = 54 - 22 Ph = Vh 3 Ih = 12 3 3.5 = 42 W Rth = Tr / Ph = = 32 C 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. Thermal Resistance vs Heat Sink Volume Natural convection at 50 C rise above ambient THERMAL RESISTANCE OF SINK TO AMBIENT (C/W) Application Data (continued) 10 1 0.1 0.01 10 100 1,000 10,000 100,000 HEAT SINK VOLUME (cm3) 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. 27 Application Data (continued) Magnecraft(R) Solid State Relays 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. 28 Application Data (continued) Magnecraft(R) Solid State Relays 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. 29 Selection Guide Magnecraft(R) Solid State Relays 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. Class 1, Division 2 certification (y/n): __________________ Input voltage: __________________ Output voltage: __________________ Load rating: __________________ Contact configuration: __________________ Ambient temperature: __________________ In-rush currents: __________________ Mounting style: __________________ Use the catalog specifications or online parametric search to determine a recommended part number (www.magnecraft.com). 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. 30 Website Guide Magnecraft(R) 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 n Online Catalog Find the right product by choosing specifications, compare products side-byside, and view technical specifications, 2D and 3D drawings, and associated accessories. n Cross Reference Search Search our comprehensive database to identify products by manufacturer and part number, and link directly to part specifications. n 3D CAD Library View, email, download or insert a file directly into your open CAD software pane and select from 18 different file formats. 3D Models n 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 n 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. n Distributor Inventory Search Search authorized distributors' current Magnecraft inventory and buy online. (Buy online not available for all distributors). Time Delay Relay Demo 31 1300 S. Wolf Rd. Des Plaines, IL 60018 Tel: 847-441-2540 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 prior notification and assumes no liability for any errors or omissions. Design: Schneider Electric Photos: Schneider Electric (c) 2010 Schneider Electric. All Rights Reserved. October 2010 8501CT1002 www.magnecraft.com Schneider Electric USA, Inc.