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GE M-PACT mk1 Retrofit
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GE M-PACT mk1 Retrofit

The GE M-PACT mk1 ACB was sold and installed worldwide until its replacement in the 1980`s.

The GE M-PACT is a mechanical breaker original configured with a dash pot tripping mechanism, later changed to the CTZ electronic tripping relay.

Many GE M-PACT mk1 ACB`s contain Asbestos Flashguards.

The GE M-PACT mk1 breaker was in its time at the forefront of technology and was specified and installed where a high degree of reliability, protection and functionality was required.

With the youngest M-PACT mk1 ACB`s no approaching 30 years of age it is not surprising that major problems are now being encountered over operation, reliability and repair of M-PACT mk1 ACB`s still in service.

The EDS GE M-PACT mk1 retrofit option allows the existing breaker and cassette to be replaced with a Schneider NT/NW ACB.

The replacement breaker and cassette is assembled off site, prior to delivery to site.

Installation can be achieved in around 4 hours

Case Study:

  • EDS recently replaced a GE M-PACT mk1 switch disconnector at a┬ámajor UK steel plant
  • The original ACB (one of 20 identical onsite) was configured with full auto-close, shunt trip and under-voltage facilities as part of the motor control system, due to mechanical failure the switch was no longer able to function automatically and required manual operation.
  • A fully functional Schneider NT switch was installed and full automatic operation of the motor control system was enabled.
  • The remainder of the switches onsite will be replaced over the next few years