MM74 HSCB RETROFIT

SIM Switchgear has developed an innovative retrofit for obsolete circuit breakers to avoid the potential for failure and power outages.

The Whipp & Bourne MM74 HSCB retrofit process involves installing a GERAPID HSCB housed in the existing chassis.

The new breaker is fitted directly into the existing switchboard without the need for modification. All existing interlocks and winding mechanisms remain the same. Alternatively, we can supply the retrofit as a complete unit.

Applications include: DC Traction, Ships, Steel Works

Advantages:

– Efficient Upgrade For Aging Equipment
– Guaranteed Future Support
– Innovative Method Saves Time & Money
– Updated CAD Drawings

TECHNICAL DATA HIGH SPEED DC CIRCUIT BREAKER TYPE GERAPID

Standard : IEC947-2 EN20123-2 ANSIC37 14
Rated Current : 2-10KA
Rated Voltage : 1000-4000 VDC
Rated Continuous Current : 4150A
Rated Impulse Withstand Voltage : 12kV DC

Mechanical Operations : 20,000
Switching Frequency (ops/h) : 60
Electromagnetic Trip : Fixed or Adjustable

*Double Pole:
Rated Current : 4-12KA
Rated Voltage : 2000-8000 VDC