Switch-plug combination K900/B/ST3 with brake, Motor protection

Details

Switch-plug combination for three-phase A.C. Current. 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.

Required for machines for commercial operation, which do not have an engine brake, but are required to have one.

Properties

• 3-pole switching. Suitable for mains connection without neutral conductor
• Switching capacity up to 4 kW
• Braking electronics, braking current up to 16 A adjustable
• Motor protection depending on the construction 5, 7, or 9 A, Non-adjustable
• Undervoltage release
• Phase inverter
• Splash water proof cover

Suitability

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.

Motor protection

The motor protection has to be selected according to the nominal current of the motor (+ ca. 10%).
A connection for a thermal contact is not provided, because the motor is better protected with the overcurrent protection.

Installation / connection (refer to wiring diagram) / brake

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 brake is by factory setting set to the lowest current. The braking current can be adjusted with a potentiometer.

Specifications

Voltage Ue

400 V~

Current le

9,0 A

Contactor

KB-04, 400V~

Coil voltage Uc

400V~

Switching capacity

4.0 kW 400V~/AC-3

Braking current

Up to 16 A adjustable

Motor protection

Thermal overcurrent protection

Type of actuation

Mechanically on/off

Connector

CEE 3P+N+E , 16A

Housing material

Polypropylene PP

Mounting position

Any

Protection class

IP54, splash water proof

Connection cable

1 m H07RN-F G1,5

Mounting dimensions

68 x 68 mm

Export-Info

Customs tariff number

85362010

Country of origin

Deutschland

Notes on delivery times¹

The delivery time applies to deliveries to Germany.
Delivery times for other countries can be found at Information on the calculation of the delivery date