ST Series Relays

Panasonic’s ST Series Polarized Power Relays feature a high switching capacity of 8A 250VAC in either 2 Form A or 1 Form A 1 Form B contact arrangement. These Relays use Panasonic exclusive 4-gap balanced armature to realize high sensitivity, high reliability, and long life in a small package. The ST Series Relays have high breakdown voltage and surge voltage to ensure they are suitable for 250V power circuit control.

ST Series Relays are also available with terminal socket options.

Features and Benefits of ST Series Power Relays

  • Compact With High Reliability And Sensitivity
  • 2 Form A or 1 Form A 1 + Form B Contact Arrangement
  • 2-Coil Latching Types Available
  • Terminal Socket Options
  • Sealed Construction For Washing
  • RoHS / REACH Compliant
  • UL/C-UL, CSA, TUV Approved

ST Series Relays - Applications

  • Electric Power Equipment
  • Industrial Machines

Part Number List

Results 28
Models table for series ST Series Relays
Part No.DatasheetOperating Function Rated Coil VoltageContact ArrangementProtective ConstructionTerminal TypeAccessoriesPacking Quantity; Inner Carton (Pcs.) Packing Quantity; Outer Carton (Pcs.)Operate Voltage (@20oC)Rated Operating Current [±10%] (at 20°C)Release Voltage (at20°C) Resistance [±10%] (at 20°C) Rated Operating Power Max. Allowable Voltage (at 20°C 68°F)Contact ShapeContact Resistance (Initial)Contact MaterialContact Rating (Resistive Load)Max. Switching Power (Resistive Load) Max. Switching VoltageMax. Switching CurrentMin. Switching Load (Reference Value) Insulation Resistance (Initial)Dielectric Strength (Initial): Between Open ContactsDielectric Strength (Initial): Between Contact SetsDielectric Strength (Initial): Between Contact and CoilSurge Withstand Voltage (Initial): Between Contact and CoilOperate Time (Initial) (At 20oC)Release Time (Initial) (at 20°C) Hock Resistance (Functional)Hock Resistance (Destructive)Vibration Resistance (Functional) Vibration Resistance (Destructive)Mechanical LifeConditionsWeight (Typ.)Resistive LoadSet Voltage Reset VoltageTime (Initial) (at 20°C 68°F) (Initial) Reset Time (Initial) (at20°C 68°F)
ST2-DC3V-F
Single side stable
3 V DC
2 Form A
Sealed
PC board terminal
Sockets are available.
50
500
Max. 80% V of rated coil voltage (Initial)
78.9 mA
Min. 10% V of rated coil voltage (Initial)
38 Ω
Approx. 240 mW
150% V of rated coil voltage
Single
Max. 30 mΩ (by voltage drop 6 V DC 1 A)
Au-flashed AgSnO2 type
8 A 250 V AC, 5 A 30 V DC
2,000 VA, 150 W
250 V AC, 30 V DC
8 A (AC), 5 A (DC)
100 mA 5 V DC
Min. 1,000 MΩ (at 500 V DC, Measured portion is the same as the case of dielectric strength.)
1,200 Vrms for 1 min (detection current: 10 mA)
2,000 Vrms for 1 min (detection current: 10 mA)
3,750 Vrms for 1 min (detection current: 10 mA)
6,000 V
Max. 15 ms at rated coil voltage (without bounce)
Max. 10 ms at rated coil voltage (without bounce, without diode)
196 m/s2 (half-sine shock pulse: 11 ms, detection time: 10 µs)
980 m/s2 (half-sine shock pulse: 6 ms)
10 to 55 Hz (at double amplitude of 2 mm, detection time: 10 µs)
10 to 55 Hz (at double amplitude of 3 mm)
Min. 10x106 ope. (switching frequency: at 180 times/min)
Ambient temperature: -40 to +60°C
Humidity: 5 to 85% RH (Avoid icing and condensation)
Approx. 10 g
[switching frequency ON : OFF = 1 s : 5 s]
Min. 100x103 ope. 8 A 250 V AC
ST2-DC5V-F
Single side stable
5 V DC
2 Form A
Sealed
PC board terminal
Sockets are available.
50
500
Max. 80% V of rated coil voltage (Initial)
47.6 mA
Min. 10% V of rated coil voltage (Initial)
105 Ω
Approx. 240 mW
150% V of rated coil voltage
Single
Max. 30 mΩ (by voltage drop 6 V DC 1 A)
Au-flashed AgSnO2 type
8 A 250 V AC, 5 A 30 V DC
2,000 VA, 150 W
250 V AC, 30 V DC
8 A (AC), 5 A (DC)
100 mA 5 V DC
Min. 1,000 MΩ (at 500 V DC, Measured portion is the same as the case of dielectric strength.)
1,200 Vrms for 1 min (detection current: 10 mA)
2,000 Vrms for 1 min (detection current: 10 mA)
3,750 Vrms for 1 min (detection current: 10 mA)
6,000 V
Max. 15 ms at rated coil voltage (without bounce)
Max. 10 ms at rated coil voltage (without bounce, without diode)
196 m/s2 (half-sine shock pulse: 11 ms, detection time: 10 µs)
980 m/s2 (half-sine shock pulse: 6 ms)
10 to 55 Hz (at double amplitude of 2 mm, detection time: 10 µs)
10 to 55 Hz (at double amplitude of 3 mm)
Min. 10x106 ope. (switching frequency: at 180 times/min)
Ambient temperature: -40 to +60°C
Humidity: 5 to 85% RH (Avoid icing and condensation)
Approx. 10 g
[switching frequency ON : OFF = 1 s : 5 s]
Min. 100x103 ope. 8 A 250 V AC
ST1-DC3V-F
Single side stable
3 V DC
1 Form A 1 Form B
Sealed
PC board terminal
Sockets are available.
50
500
Max. 80% V of rated coil voltage (Initial)
78.9 mA
Min. 10% V of rated coil voltage (Initial)
38 Ω
Approx. 240 mW
150% V of rated coil voltage
Single
Max. 30 mΩ (by voltage drop 6 V DC 1 A)
Au-flashed AgSnO2 type
8 A 250 V AC, 5 A 30 V DC
2,000 VA, 150 W
250 V AC, 30 V DC
8 A (AC), 5 A (DC)
100 mA 5 V DC
Min. 1,000 MΩ (at 500 V DC, Measured portion is the same as the case of dielectric strength.)
1,200 Vrms for 1 min (detection current: 10 mA)
2,000 Vrms for 1 min (detection current: 10 mA)
3,750 Vrms for 1 min (detection current: 10 mA)
6,000 V
Max. 15 ms at rated coil voltage (without bounce)
Max. 10 ms at rated coil voltage (without bounce, without diode)
196 m/s2 (half-sine shock pulse: 11 ms, detection time: 10 µs)
980 m/s2 (half-sine shock pulse: 6 ms)
10 to 55 Hz (at double amplitude of 2 mm, detection time: 10 µs)
10 to 55 Hz (at double amplitude of 3 mm)
Min. 10x106 ope. (switching frequency: at 180 times/min)
Ambient temperature: -40 to +60°C
Humidity: 5 to 85% RH (Avoid icing and condensation)
Approx. 10 g
[switching frequency ON : OFF = 1 s : 5 s]
Min. 100x103 ope. 8 A 250 V AC
ST2-DC48V-F
Single side stable
48 V DC
2 Form A
Sealed
PC board terminal
Sockets are available.
50
500
Max. 80% V of rated coil voltage (Initial)
5.3 mA
Min. 10% V of rated coil voltage (Initial)
9,000 Ω
Approx. 240 mW
150% V of rated coil voltage
Single
Max. 30 mΩ (by voltage drop 6 V DC 1 A)
Au-flashed AgSnO2 type
8 A 250 V AC, 5 A 30 V DC
2,000 VA, 150 W
250 V AC, 30 V DC
8 A (AC), 5 A (DC)
100 mA 5 V DC
Min. 1,000 MΩ (at 500 V DC, Measured portion is the same as the case of dielectric strength.)
1,200 Vrms for 1 min (detection current: 10 mA)
2,000 Vrms for 1 min (detection current: 10 mA)
3,750 Vrms for 1 min (detection current: 10 mA)
6,000 V
Max. 15 ms at rated coil voltage (without bounce)
Max. 10 ms at rated coil voltage (without bounce, without diode)
196 m/s2 (half-sine shock pulse: 11 ms, detection time: 10 µs)
980 m/s2 (half-sine shock pulse: 6 ms)
10 to 55 Hz (at double amplitude of 2 mm, detection time: 10 µs)
10 to 55 Hz (at double amplitude of 3 mm)
Min. 10x106 ope. (switching frequency: at 180 times/min)
Ambient temperature: -40 to +60°C
Humidity: 5 to 85% RH (Avoid icing and condensation)
Approx. 10 g
[switching frequency ON : OFF = 1 s : 5 s]
Min. 100x103 ope. 8 A 250 V AC
ST2-DC9V-F
Single side stable
9 V DC
2 Form A
Sealed
PC board terminal
Sockets are available.
50
500
Max. 80% V of rated coil voltage (Initial)
25 mA
Min. 10% V of rated coil voltage (Initial)
360 Ω
Approx. 240 mW
150% V of rated coil voltage
Single
Max. 30 mΩ (by voltage drop 6 V DC 1 A)
Au-flashed AgSnO2 type
8 A 250 V AC, 5 A 30 V DC
2,000 VA, 150 W
250 V AC, 30 V DC
8 A (AC), 5 A (DC)
100 mA 5 V DC
Min. 1,000 MΩ (at 500 V DC, Measured portion is the same as the case of dielectric strength.)
1,200 Vrms for 1 min (detection current: 10 mA)
2,000 Vrms for 1 min (detection current: 10 mA)
3,750 Vrms for 1 min (detection current: 10 mA)
6,000 V
Max. 15 ms at rated coil voltage (without bounce)
Max. 10 ms at rated coil voltage (without bounce, without diode)
196 m/s2 (half-sine shock pulse: 11 ms, detection time: 10 µs)
980 m/s2 (half-sine shock pulse: 6 ms)
10 to 55 Hz (at double amplitude of 2 mm, detection time: 10 µs)
10 to 55 Hz (at double amplitude of 3 mm)
Min. 10x106 ope. (switching frequency: at 180 times/min)
Ambient temperature: -40 to +60°C
Humidity: 5 to 85% RH (Avoid icing and condensation)
Approx. 10 g
[switching frequency ON : OFF = 1 s : 5 s]
Min. 100x103 ope. 8 A 250 V AC
ST2-L2-DC48V-F
2 coil latching
48 V DC
2 Form A
Sealed
PC board terminal
Sockets are available.
50
500
Set coil: 4.7 mA
Reset coil: 4.7 mA
Set coil: 10,200 Ω
Reset coil: 10,200 Ω
Approx. 240 mW
150% V of rated coil voltage
Single
Max. 30 mΩ (by voltage drop 6 V DC 1 A)
Au-flashed AgSnO2 type
8 A 250 V AC, 5 A 30 V DC
2,000 VA, 150 W
250 V AC, 30 V DC
8 A (AC), 5 A (DC)
100 mA 5 V DC
Min. 1,000 MΩ (at 500 V DC, Measured portion is the same as the case of dielectric strength.)
1,200 Vrms for 1 min (detection current: 10 mA)
2,000 Vrms for 1 min (detection current: 10 mA)
3,750 Vrms for 1 min (detection current: 10 mA)
6,000 V
196 m/s2 (half-sine shock pulse: 11 ms, detection time: 10 µs)
980 m/s2 (half-sine shock pulse: 6 ms)
10 to 55 Hz (at double amplitude of 2 mm, detection time: 10 µs)
10 to 55 Hz (at double amplitude of 3 mm)
Min. 10x106 ope. (switching frequency: at 180 times/min)
Ambient temperature: -40 to +60°C
Humidity: 5 to 85% RH (Avoid icing and condensation)
Approx. 10 g
[switching frequency ON : OFF = 1 s : 5 s]
Min. 100x103 ope. 8 A 250 V AC
Max. 80% V of rated coil voltage (Initial)
Max. 80% V of rated coil voltage (Initial)
Max. 15 ms at rated coil voltage (without bounce)
Max. 15 ms at rated coil voltage (without bounce, without diode)
ST1-L2-DC3V-F
2 coil latching
3 V DC
1 Form A 1 Form B
Sealed
PC board terminal
Sockets are available.
50
500
Set coil: 75 mA
Reset coil: 75 mA
Set coil: 40 Ω
Reset coil: 40 Ω
Approx. 240 mW
150% V of rated coil voltage
Single
Max. 30 mΩ (by voltage drop 6 V DC 1 A)
Au-flashed AgSnO2 type
8 A 250 V AC, 5 A 30 V DC
2,000 VA, 150 W
250 V AC, 30 V DC
8 A (AC), 5 A (DC)
100 mA 5 V DC
Min. 1,000 MΩ (at 500 V DC, Measured portion is the same as the case of dielectric strength.)
1,200 Vrms for 1 min (detection current: 10 mA)
2,000 Vrms for 1 min (detection current: 10 mA)
3,750 Vrms for 1 min (detection current: 10 mA)
6,000 V
196 m/s2 (half-sine shock pulse: 11 ms, detection time: 10 µs)
980 m/s2 (half-sine shock pulse: 6 ms)
10 to 55 Hz (at double amplitude of 2 mm, detection time: 10 µs)
10 to 55 Hz (at double amplitude of 3 mm)
Min. 10x106 ope. (switching frequency: at 180 times/min)
Ambient temperature: -40 to +60°C
Humidity: 5 to 85% RH (Avoid icing and condensation)
Approx. 10 g
[switching frequency ON : OFF = 1 s : 5 s]
Min. 100x103 ope. 8 A 250 V AC
Max. 80% V of rated coil voltage (Initial)
Max. 80% V of rated coil voltage (Initial)
Max. 15 ms at rated coil voltage (without bounce)
Max. 15 ms at rated coil voltage (without bounce, without diode)
ST1-L2-DC24V-F
2 coil latching
24 V DC
1 Form A 1 Form B
Sealed
PC board terminal
Sockets are available.
50
500
Set coil: 10 mA
Reset coil: 10 mA
Set coil: 2,400 Ω
Reset coil: 2,400 Ω
Approx. 240 mW
150% V of rated coil voltage
Single
Max. 30 mΩ (by voltage drop 6 V DC 1 A)
Au-flashed AgSnO2 type
8 A 250 V AC, 5 A 30 V DC
2,000 VA, 150 W
250 V AC, 30 V DC
8 A (AC), 5 A (DC)
100 mA 5 V DC
Min. 1,000 MΩ (at 500 V DC, Measured portion is the same as the case of dielectric strength.)
1,200 Vrms for 1 min (detection current: 10 mA)
2,000 Vrms for 1 min (detection current: 10 mA)
3,750 Vrms for 1 min (detection current: 10 mA)
6,000 V
196 m/s2 (half-sine shock pulse: 11 ms, detection time: 10 µs)
980 m/s2 (half-sine shock pulse: 6 ms)
10 to 55 Hz (at double amplitude of 2 mm, detection time: 10 µs)
10 to 55 Hz (at double amplitude of 3 mm)
Min. 10x106 ope. (switching frequency: at 180 times/min)
Ambient temperature: -40 to +60°C
Humidity: 5 to 85% RH (Avoid icing and condensation)
Approx. 10 g
[switching frequency ON : OFF = 1 s : 5 s]
Min. 100x103 ope. 8 A 250 V AC
Max. 80% V of rated coil voltage (Initial)
Max. 80% V of rated coil voltage (Initial)
Max. 15 ms at rated coil voltage (without bounce)
Max. 15 ms at rated coil voltage (without bounce, without diode)
ST1-L2-DC48V-F
2 coil latching
48 V DC
1 Form A 1 Form B
Sealed
PC board terminal
Sockets are available.
50
500
Set coil: 4.7 mA
Reset coil: 4.7 mA
Set coil: 10,200 Ω
Reset coil: 10,200 Ω
Approx. 240 mW
150% V of rated coil voltage
Single
Max. 30 mΩ (by voltage drop 6 V DC 1 A)
Au-flashed AgSnO2 type
8 A 250 V AC, 5 A 30 V DC
2,000 VA, 150 W
250 V AC, 30 V DC
8 A (AC), 5 A (DC)
100 mA 5 V DC
Min. 1,000 MΩ (at 500 V DC, Measured portion is the same as the case of dielectric strength.)
1,200 Vrms for 1 min (detection current: 10 mA)
2,000 Vrms for 1 min (detection current: 10 mA)
3,750 Vrms for 1 min (detection current: 10 mA)
6,000 V
196 m/s2 (half-sine shock pulse: 11 ms, detection time: 10 µs)
980 m/s2 (half-sine shock pulse: 6 ms)
10 to 55 Hz (at double amplitude of 2 mm, detection time: 10 µs)
10 to 55 Hz (at double amplitude of 3 mm)
Min. 10x106 ope. (switching frequency: at 180 times/min)
Ambient temperature: -40 to +60°C
Humidity: 5 to 85% RH (Avoid icing and condensation)
Approx. 10 g
[switching frequency ON : OFF = 1 s : 5 s]
Min. 100x103 ope. 8 A 250 V AC
Max. 80% V of rated coil voltage (Initial)
Max. 80% V of rated coil voltage (Initial)
Max. 15 ms at rated coil voltage (without bounce)
Max. 15 ms at rated coil voltage (without bounce, without diode)
ST1-DC9V-F
Single side stable
9 V DC
1 Form A 1 Form B
Sealed
PC board terminal
Sockets are available.
50
500
Max. 80% V of rated coil voltage (Initial)
25 mA
Min. 10% V of rated coil voltage (Initial)
360 Ω
Approx. 240 mW
150% V of rated coil voltage
Single
Max. 30 mΩ (by voltage drop 6 V DC 1 A)
Au-flashed AgSnO2 type
8 A 250 V AC, 5 A 30 V DC
2,000 VA, 150 W
250 V AC, 30 V DC
8 A (AC), 5 A (DC)
100 mA 5 V DC
Min. 1,000 MΩ (at 500 V DC, Measured portion is the same as the case of dielectric strength.)
1,200 Vrms for 1 min (detection current: 10 mA)
2,000 Vrms for 1 min (detection current: 10 mA)
3,750 Vrms for 1 min (detection current: 10 mA)
6,000 V
Max. 15 ms at rated coil voltage (without bounce)
Max. 10 ms at rated coil voltage (without bounce, without diode)
196 m/s2 (half-sine shock pulse: 11 ms, detection time: 10 µs)
980 m/s2 (half-sine shock pulse: 6 ms)
10 to 55 Hz (at double amplitude of 2 mm, detection time: 10 µs)
10 to 55 Hz (at double amplitude of 3 mm)
Min. 10x106 ope. (switching frequency: at 180 times/min)
Ambient temperature: -40 to +60°C
Humidity: 5 to 85% RH (Avoid icing and condensation)
Approx. 10 g
[switching frequency ON : OFF = 1 s : 5 s]
Min. 100x103 ope. 8 A 250 V AC

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