Blogs & Education

Westinghouse started making load break switches in 1950. Popular switches were 5–15 kV. The early switches were called load break fusible (LBF). Westinghouse made the next generation of switches, Westinghouse load interrupters (WLI), though 1980. Cutler Hammer also made load interrupters. Cutler Hammer now makes medium-voltage switchgear (MVS). It is available in voltages of 5–15 kV and 38 kV. Circuit Breakers Sales NE, Inc. stocks these different generations of switches. […]

Read More… from Breaker History 101

In 1945, after the war, GE sold the first resettable fuse — a circuit breaker. The first GE circuit breakers were large and heavy. They were mounted on slate. Their dashpot trip units were revolutionary at the time but very unreliable as time passed. The 600-amp GE circuit breaker was called the AE-1-25. The 1600-amp […]

Read More… from The History of GE Low-Voltage Circuit Breakers

The signs had seen better days. Weathered from harsh New England winters and lashing summer winds, most of the large placards placed alongside aircraft on display outside the New England Air Museum looked as old as the historic machines they described — that is, until Matt Moran, junior engineer, at Circuit Breaker Sales Northeast, Inc., […]

Read More… from No Flight of Fancy: Engineering Department Donates Talent to Local Museum

There are many situations in which you might have to consider remanufactured air circuit breakers. For example, maybe an obsolete draw-out air breaker fails and needs to be replaced. Or you may want to upgrade to solid state trip units in your breakers. […]

Read More… from Avoiding Problems with Rebuilt Air Circuit Breakers