AC switch-plug combination for circular saws, planing machines, shredders or other machines and motors, which after power failure and power recovery are not allowed to turn back on.
- 3-pole switching, suitable for mains connection without neutral conductor
- Switching capacity up to 4 kW
- Undervoltage release
- Phase inverter
- Connection possibility for thermal contact
- Splash water proof cover
This switch in inverted construction (ST3) with Coil voltage 400V: SSK820-400.
The neutral conductor is not connected.
Not suitable for motors in delta connection, which for example need a voltage of 230V in the terminal box for a electromechanical brake.
If needed a brake can be tapped between a phase and a star point 230V for motors in star connection.
Installation / connection (refer to wiring diagram)
The switch is screwed on the housing base. Grid dimension of the screws: 68 x 68 mm.
The cable outlet is on the side of the housing base, by factory setting on the opposite side of the keypad.
by rotating the base, the cable can be routed to all 4 sides.
The blue wire is not a neutral conductor, it's the connection for the thermal contact.
If the motor does not have a thermal contact, the blue wire has to be connected with the grey wire on the terminal board.
- Voltage Ue
- 400 V~
- Current le
- 9,0 A
- KB-04, 400V~
- Coil voltage Uc
- Switching capacity
- 4.0 kW 400V~/AC-3
- Type of actuation
- Mechanically on/off
- CEE 3P+N+E , 16A
- Housing material
- Polypropylene PP
- Mounting position
- Protection class
- IP54, splash water proof
- Connection cable
- 1 m H07RN-F G1,5
- Mounting dimensions
- 68 x 68 mm
Notes on delivery times1
The delivery time applies to deliveries to Germany.
Delivery times for other countries can be found at