SK829071-B

The ABB VH 300 Mechanical Interlock Unit is an accessory for compatible ABB EK contactors. Mounted between two horizontally positioned contactors, its mechanical action prevents one contactor from closing while the other remains closed. This helps avoid simultaneous operation in control and switching arrangements that require the contactors to operate one at a time.

Identified by ABB order code SK829071-B, the VH 300 is listed for compatible EK175/EK210 contactor combinations. ABB specifies a conventional free-air thermal current (Ith) of 10 A at 40°C and a rated insulation voltage (Ui) of 690 V. Confirm the exact contactor models and mounting arrangement against ABB’s selection information before purchase or installation.

Ahmedabad Electric Corporation supplies ABB switchgear and automation products and can help check product availability and compatibility for your application.