T&D World Magazine
Outdoor Vacuum Circuit Breaker Uses Magnetic Actuator Design

Outdoor Vacuum Circuit Breaker Uses Magnetic Actuator Design

ABB has released the 38 kV R-MAG outdoor vacuum circuit breaker.

First introduced in 2002 for 15 kV and 27 kV applications, the R-MAG breaker uses a magnetic actuator design that has only one moving part, offering an improvement over the traditional spring charging mechanism. Rated for 10,000 operations, the 38 kV R-MAG breaker provides more than five times the IEEE requirement for endurance capabilities. Additionally, the magnetic actuator requires no regular maintenance during the life of the breaker, thus reducing costly maintenance intervals, while increasing reliability and safety.

The 38 kV R-MAG breaker takes advantage of embedded pole technology, providing a compact and modular design, suitable for a wide range of climatic and environmental conditions. Embedded in a solid insulating material of high dielectric strength, the vacuum interrupters are insulated from external effects of mechanical shock, dust, and humidity.

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