Solid State Trip Units for 600 Volt Air Circuit Breakers
In the early 1970’s the ‘trip unit’, also known as the ‘brain’ of air circuit breakers evolved into what is known today as solid state trip units. Solid state trip units have far less moving parts than their predecessor, electro-mechanical trip units. Companies such as Electric Control Equipment are able to take older circuit breakers and retrofit solid state trip units onto them to give customers the benefit of keeping their existing switchboards, while simultaneously upgrading to new technology. Each major manufacturer of switchgear makes a solid state trip unit. Generally speaking it is acceptable to retrofit different manufactures trip units on different company’s breaker. For example, a GE solid state kit could be retrofitted on a Westinghouse circuit breaker.
All solid state trip units accomplish the same basic three essentials:
- All are highly accurate
- Low maintenance
- Long life
Westinghouse Solid State Trip Units
- Beaver trip unit
- Amptector trip unit
Cutler Hammer Solid State Trip Units
- Digitrip 500. Digitrip 600. Digitrip 700. Digitrip 800
- Digitrip 510. Digitrip 610. Digitrip 710. Digitip 810
General Electric Solid State Trip Units
- Power sensor. Ecs, sst, Microversatrip, Microversatrip rms-9, Microversatrip +, Microversatrip pm
Siemens Allis solid state trip unit
- Static trip 1, Limit trip, Static trip 11, Static trip 111
Independent Manufacturers
- Utility relay AC Pro
Upgrading trip units is one of the most popular repairs we do here at Electric Control Equipment. We are known for our vast inventory of circuit breakers and circuit breaker parts. We save our clients’ valuable time by being able to provide a replacement circuit breaker while we repair your unit in house. Our staff will retrofit any component with your choice of trip unit and exchange one our own working breakers to temporarily replace yours, avoiding any business down time.