E. Dold & Söhne GmbH & Co. KG

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E-Mail: dold-relays@dold.com

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Reversing contactor with current monitor

BH 9255


Auxiliary voltage

Control input

Rated continuous current

Approvals and Markings


  • 0059576
  • BH9255.11/61 UH AC/DC24V 4A
The reversing contactor BH 9255 is used to reverse the direction of 3-phase asynchronuos motors... more

Product description

The reversing contactor BH 9255 is used to reverse the direction of 3-phase asynchronuos motors by switching 2 phases (L1 and L2). 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. The motor current is monitored in phase L1. If the current rises above the tripping value the device is able to switch off the motor.

Technical specifications

Widths: 45, 67,5, 112,5 mm
Number of poles: 3-pole
Load current up to: 20 A
Load voltage up to: 3AC 24 - 480 V
On/Off Input Control: DC, AC/DC
Signalling output: Yes
Temperature monitoring: Yes
Approvals: UL
Enclosure design: Switch cabinet
Type: BH 9255


  • According to IEC/EN 60 947-1, IEC/EN 60 947-4-2
  • Switching at zero crossing
  • To reverse 3 phase asynchronuos motors up to
    5.5 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
  • With current monitor
  • 45 mm; 67.5 mm; 112.5 mm width