SONG CHUAN SONG CHUAN
164
731
Ordering Information
Type List
Features
◆731
Enclosure style
Terminal
style
Contact
form Open type Dust cover Ears on cover Antirotation
-tab Ears on top
1A (SPNO)731-SPNO 731-SPNO-C 731-SPNO-C1 731-SPNO-C2 731-SPNO-C3
1C (SPDT)731-SPDT 731-SPDT-C 731-SPDT-C1 731-SPDT-C2 731-SPDT-C3
2A (DPNO) 731-DPNO 731-DPNO-C 731-DPNO-C1 731-DPNO-C2 731-DPNO-C3
Quick terminal
2C (DPDT)731-DPDT 731-DPDT-C 731-DPDT-C1 731-DPDT-C2 731-DPDT-C3
3A (TPNO) 731-TPNO 731-TPNO-C 731-TPNO-C1 731-TPNO-C2 731-TPNO-C3
3C (TPDT)731-TPDT 731-TPDT-C 731-TPDT-C1 731-TPDT-C2 731-TPDT-C3
◆731H
Enclosure style
Terminal
style
Contact
form Dust cover Ears on cover Ears on top
1A (SPNO)731H-SPNO-C 731H-SPNO-C1 731H-SPNO-C3
1C (SPDT)731H-SPDT-C 731H-SPDT-C1 731H-SPDT-C3
2A (DPNO) 731H-DPNO-C 731H-DPNO-C1 731H-DPNO-C3
Quick terminal
2C (DPDT)731H-DPDT-C 731H-DPDT-C1 731H-DPDT-C3
3A (TPNO) 731H-TPNO-C 731H-TPNO-C1 731H-TPNO-C3
3C (TPDT)731H-TPDT-C 731H-TPDT-C1 731H-TPDT-C3
731 -TPDT - -
1 2 3 4 5 6
DPDT -- Double pole double throw
DPNO -- Double pole normally open
DPNC -- Double pole normally closed
TPDT -- Three pole double throw
TPNO -- Three pole normally open
TPNC -- Three pole normally closed
1. 731 -- Basic series designation
2. Blank -- Standard type
H -- High power type
3. SPDT -- Single pole double throw
SPNO -- Single pole normally open
SPNC -- Single pole normally closed
□
10A general purpose Power Relay.
□
SPDT, DPDT, TPDT contact configurations.
□
AC & DC coils are both available.
□
Optional for anti-rotation tab, tapped core, indicator
lamp & push-to-test button, flanged cover.
□RoHS Compliant.
7
731
SONG CHUAN
SONG CHUAN
165
731 731
Contact Rating
Coil Rating (DC)
Coil Rating (AC)
T -- Printed circuit board terminals
L -- Pilot lamp
6. Blank -- Standard type
F -- Class F
4. Blank -- Open type without frame tab
C -- With cover
C1 -- With mounting ears on cover
C2 -- With accessible mounting hole with
anti-rotation tab
C3 -- Mounting Ears on top of cover
X -- Open type with frame tab
731 731H 1P、2P 731H 3P
Resistive load 10A 28VDC 20A 300VAC 16A 300VAC
10A 240VAC 25A 277VAC 20A 277VAC
Rated
voltage
(V)
Rated current
±10 % at 23°C
(mA)
Coil resistance
±10 % at 23°C
(Ω)
Max. continuous
voltage
at 70°C
Pick up
voltage(Max.)
at 23°C
Drop out
voltage(Min.)
at 23°C
Power consumption
at rated
voltage
6188 32
12 100 120
24 51 472
48 27 1,800
approx. 1.2W
110 11 10,000
12012 10,000
140 % of
rated
voltage
75 % of
rated
voltage
10 % of
rated
voltage
Rated
voltage
(V)
Coil resistance
±10 % at 23°C
(Ω)
Max. continuous
voltage
at 70°C
Pick up
voltage(Max.)
at 23°C
Drop out
voltage(Min.)
at 23°C
Power consumption
at rated
voltage
12 21
24 85
110 1,700
SP
115 1,700
DP
120 2,250
approx. 2.0VA
110 % of
rated
voltage
85 % of
rated
voltage
30 % of
rated
voltage
5.
M
Blank
-- With manual operator
-- No special feature
7. -- Coil voltage (please refer to the
coil rating data for the availability)
Max. switching current
Max. switching voltage
Max. switching capacity
10A
240VAC
2400VA
25A
300VAC
6925VA
20A
300VAC
6000VA
SONG CHUAN SONG CHUAN
166
731
Coil Rating (AC)
Rated
voltage
(V)
Coil resistance
±10 % at 23°C
(Ω)
Max. continuous
voltage
at 70°C
Pick up
voltage(Max.)
at 23°C
Drop out
voltage(Min.)
at 23°C
Power consumption
at rated
voltage
SP
DP approx. 2.0VA
220 7,200 110 % of
rated
voltage
85 % of
rated
voltage
30 % of
rated
voltage
7,200
240
230
9,110
Rated
voltage
(V)
Coil resistance
±10 % at 23°C
(Ω)
Max. continuous
voltage
at 70°C
Pick up
voltage(Max.)
at 23°C
Drop out
voltage(Min.)
at 23°C
Power consumption
at rated
voltage
12 18
24 72
110 1,300
115 1,300
TP
120 1,700
approx. 2.7VA
220 5,600
110 % of
rated
voltage
85 % of
rated
voltage
30 % of
rated
voltage
230 5,600
240 7,200
Coil Rating (AC)
Specification
Contact material AgSnO alloy
Contact resistance (1)
50 mΩ Max. (for 731) ; 100 mΩ Max. (for 731H)
Operate time (1) 20 ms Max.
Release time (1) 20 ms Max.
Operating extremes 10～55Hz , amplitude 1.0 mm
Vibration resistance
Damage limits 10～55Hz , amplitude 1.5 mm
Operating extremes 10G
Shock resistance
Damage limits 100G
Mechanical 10,000,000 ops. (frequency 18,000 ops./hr)
Life expectancy 100,000 ops. (frequency 1,200 ops./hr) (for 731)
Electrical
50,000 ops. (frequency 360 ops./hr) (for 731H)
-45～+70°C (no freezing) (for 731)
Operating ambient temperature AC coil : -45～+55°C (no freezing)
DC coil : -45～+65°C (no freezing)
(for 731H)
Weight Approx. 79.2 g
(at 1A/6VDC by 4-wire resistance measurement)
731
SONG CHUAN
SONG CHUAN
167
731 731
Note ：
(1) Initial value. Operate and release time excluding contact bounce.
(2) Unless otherwise specified, all tests are under room temperature and humidity.
(3) Consider the heat of PCB is necessary, please check the actual condition of PCB.
(4) Applying no diode to this relay. The life expectancy will be lower when a diode is used. To use
a varistor (ZNR) could absorb the coil surge of relay that is recommended.
(5) Do not use the relay exceeding the coil rating, contact rating and life expectancy, or this may cause
the risk of overheating.
(6) To assure optimum performance, avoid the relay from dropping, hitting, or other unnecessary shocks.
(7) Use suitable harnesses and bus bars according to the current as below︰
10A type︰Min. 2.0 mm
25A type︰Min. 6.0 mm
(8) Usage, transport and storage conditions
● 1. Temperature: -45～+70°C
● 2. Humidity: 5 to 85% R.H.
● 3. Pressure: 86 to 106 kPa
● Furthermore, the humidity range varies with the temperature. So, use relays
within the range indicated in the graph below.
(9) Please contact Song Chuan for the detailed information.
2
2
Tolerance range
Humidity, %RH
(Avoid freezing
when used at
temperatures
lower than 0°C)
(Avoid
condensation
when used at
temperatures
higher than 0°C )
Temperature, °C
Insulation Data
Insulation of IEC 61810-1
Clearance / creepage distances Between coil to contact : Reinforce
,
≧ 3.0mm / ≧ 5.0mm
: Functional
Between open contact
Rated insulation voltage 250V
Rated impulse withstand voltage 2500V
Pollution degree 2
Rated voltage 230 / 400V
Overvoltage category II
Note；(1) Initial value.
Insulation resistance (1) 1000 MΩ Min. (DC 500V)
Between open contact : AC 500V , 50/60Hz 1 min. (for 731)
: AC 1000V , 50/60Hz 1 min. (for 731H)
Between contact and coil : AC 1500V , 50/60Hz 1 min. (for 731)
Dielectric strength (1)
: AC 2500V , 50/60Hz 1 min. (for 731H)
Between contact circuits : AC 1500V , 50/60Hz 1 min. (for 731)
: AC 2500V , 50/60Hz 1 min. (for 731H)
SONG CHUAN SONG CHUAN
168
731
Safety Approval
Safety Approval Rating
Outline Dimensions
731 731H
UL / CUL CSA UL / CUL
File No. E88991 1663800 E88991
Certified
731 731H 1P、2P 731H 3P
UL / CUL、CSA UL / CUL
10A 240VAC 20A 300VAC 16A 300VAC
10A 28VDC 25A 277VAC 20A 277VAC
1/3HP 120VAC 1.5HP 240VAC 1.5HP 240VAC
1/2HP 240VAC 1HP 120VAC 1HP 120VAC
◆731 OPEN
33MAX
(1.299)
4.4
(0.173)
(0.437)
11.1
8.3
(0.327)
7.6
(0.299)
(0.437)
11.1
5.3
(0.209)
(2.000)
50.8
◆731 M
(0.437)
11.1
8.3
(0.327)
7.6
(0.299)
(0.437)
11.1
6.1
(0.240)
5.3
(0.209)
(0.165)
4.2
3.9
(0.154)
27.85
(1.096)
731
SONG CHUAN
SONG CHUAN
169
731 731
◆731 C
(0.437)
11.1
8.3
(0.327)
7.6
(0.299)
(0.437)
11.1
6.1
(0.240)
5.3
(0.209)
4.8
(0.189)
38
(1.496)
0.5
(0.020)
35
(1.378)
(2.169)
55.1
(1.874)
47.6
(0.295)
7.5
◆
731 T
◆
731 C1
◆731 C2
1.2
(0.047)
(0.157)
4
(0.417)
10.6
(1.429)
36.3
(0.437)
11.1
8.3
(0.327)
7.6
(0.299)
(0.437)
11.1
6.1
(0.240)
5.3
(0.209)
(2.750)
69.85
16
(0.630)
3.96
(0.156)
(2.500)
63.5
SONG CHUAN SONG CHUAN
170
731
◆
(0.437)
11.1
(0.437)
11.1
6.1
(0.240)
5.3
(0.209)
8.3
(0.327)
7.6
(0.299)
12.7
(0.500)
(2.530)
64.26
(2.150)
54.61
φ3.55
(0.140)
(0.189)
4.8
47.6
(1.874)
(1.496)
38
1.6
(0.063)
7.8
(0.307)
Wiring Diagram
BOTTOM VIEW
BOTTOM VIEW
SPDT DPDT
SPNO DPNO
DPNC TPNC
TPNO
SPNC
TPDT
7
5
A B
4
7
6
9
A B
4
7
A
5
8
6
9
B
1
7
A
2
8
3
9
B
1
7
3
9
A B
1
4
7
3
6
9
A B
1
4
7
A
2
5
8
3
6
9
B
7
2
5
A B
7
2
A B
PC Board Layout
1P SPDT 2P DPDT
(0.299)
7.6
Ø1.6-5
(0.063)
(0.240)
(0.209)
5.3 6.1
(0.437)
(0.437)
11.111.1
(0.327)
8.3
(0.327)
(0.299)
8.37.6
Ø1.6-8
(0.063)
(0.240)
(0.209)
5.3 6.1
(0.874)
22.2
3P TPDT
(0.437)
(0.327)
(0.299)
(0.437)
(0.240)
(0.209)
8.37.6
Ø1.6-11
(0.063)
5.3 6.1
11.111.1
MORE THAN: 20(0.787) ±1(0.039)
20(0.787) ±0.5(0.020)
5(0.197) ±0.3(0.012)
LESS THAN: 1(0.039) ±0.1(0.004)
TOLERANCE:
731
SONG CHUAN
SONG CHUAN
171
731 731
(0.299)
7.6
Ø1.6-4
(0.063)
(0.449)
11.4
(0.437)
(0.437)
11.111.1
(0.327)
8.3
(0.327)
(0.299)
8.37.6
Ø1.6-6
(0.063)
(0.449)
11.4
(0.874)
22.2
(0.437)
(0.327)
(0.299)
(0.437)
8.37.6
Ø1.6-8
(0.063)
11.111.1
(0.449)
11.4
1P SPNC 2P DPNC
(0.299)
7.6
Ø1.6-4
(0.063)
(0.240)
6.1
(0.437)
(0.437)
11.111.1
(0.536)
13.6
(0.536)
(0.299)
13.6
7.6
Ø1.6-6
(0.063)
(0.240)
6.1
(0.874)
22.2
3P TPNC
1P SPNO 2P DPNO 3P TPNO
(0.437)
(0.299)
(0.437)
(0.240)
7.6
Ø1.6-8
(0.063)
6.1
11.111.1
(0.536)
13.6
Life expectancy
AC/DC resistive load/Switching current(A)
10
0 1
6
Number of operations
5
10
10 7
2 4 6 8 10
10 4
240VAC/28VDC
Engineering Data
◆731 (DC coil)
Temperature rise (℃)
% of Nominal Coil Voltage (at 70℃)
10
90 100
50
30
20
40
70
60
120110 130 140 150
10A
Coil temperature rise
Temperature rise (℃)
20
60
50
40
30
10
% of Nominal Coil Voltage (at 23℃)
80
70
Coil temperature rise
10A
150140130110 12010090
% of Nominal coil voltage (at 23℃)
3
5
avg
min
max
Operate time/Release time
2
14013012011090 100
Time (ms)
70
4
80 150 160
10
min avg
max
Operate time
Release time
12
14
20
18
16
28
30
32
26
24
22
38
36
34
SONG CHUAN SONG CHUAN
172 ———— All specications subject to change. Please contact Song Chuan for update. ————
731
◆731H (DC coil)
90
Temperature rise (℃)
25A
% of Nominal Coil Voltage (at 65℃)
10
100 110
50
30
20
40
70
60
80
130120 140
20A
16A
Coil temperature rise
100
15090
Temperature rise (℃)
20
60
50
40
30
10
% of Nominal Coil Voltage (at 23℃)
80
70
90
100
Coil temperature rise
25A
16A
20A
90 150140120 130110100
Life expectancy (1C/2C)
AC resistive load/Switching current(A)
10
0 12
6
Number of operations
5
10
10 7
14 16 18 20 25
10 4
277VAC
300VAC
277VAC
AC resistive load/Switching current(A)
10
10
10
10
Number of operations
Life expectancy (3C)
120
4
5
10
300VAC
6
7
14 16 18 20 % of Nominal coil voltage (at 23℃)
3
5
avg
min
max
Operate time/Release time
2
14013012011090 100
Time (ms)
70
4
80 150 160
10
min avg
max
Operate time
Release time
12
14
20
18
16
28
30
32
26
24
22
38
36
34
SCLA