DOLD BH 9253 – Reversing contactor

The reversing contactor BH 9253 is used to reverse the direction of 3-phase asynchronuos motors by switching 2 phases. An electrical interlocking disables the control of both directions at the same time. The reversing contactor has a short on and off delay time. When reversing the phases a switchover delay is guaranteed. To protect the power semiconductors the unit incorporates temperature monitoring. When overtemperature is detected the power semiconductors swith off and an output relay as well as a red LED is activated. This state is stored. When the temperature is back to normal the semiconductors can be activated again by switching off and on the control voltage.

Features

• According to IEC/EN 60 947-1, IEC/EN 60 947-4-2
• Switching at zero-crossing
• To reverse 3 phase asynchronuos motors up to5.5 kW / 400 V (7.5 HP / 460 V)
• Electrical interlocking of both directions
• Temperature monitoring to protect the power semiconductors
• Measured nominal current up to 20 A
• LEDs for status indication
• Galvanic separation between control circuit and power circuit
• 45 mm; 67.5 mm; 112.5 mm width

Technical specifications

Available variants

Tell us the variant you need in your quote request.

Downloads

• Datasheet BH 9253 (pdf – 367.28 KB)