Per 2014 NEC Article 100, short circuit current rating (SCCR) is defined as: “The prospective symmetrical fault current at a nominal voltage to which an apparatus or system is able to be connected ...

What you don’t know about circuit breaker markings can trip you up. Most of us pay little attention to markings on circuit breakers. Yet, these markings can be the difference between a safe ...

The marking must comply with Sec. 110.21(B)(3). Note: Sec. 210.8 specifies requirements for GFCI protection for the receptacle outlets where the location warrants such protection. In addition, the ...

Molded-case breakers handle up to 63 A at 240 Vac Available in UL489, UL508, and UL107 ratings, ac and dc miniature molded-case circuit breakers are rated to 32 A at 480 Y/277 Vac and up to 63 A at ...

Dynamic Ratings’ new Breaker Performance Monitor (BPM) is a comprehensive circuit breaker monitoring solution for utilities. With high-speed waveform capture, the BPM combines offline and online ...

Master Distributors now offers the Guard Family of circuit breakers. Master Distributors now offers the Guard Family of circuit breakers. Featuring an electronic chip plus magnetic control, the Guard ...

A German research team has developed a semiconductor-based protection concept tailored to renewable energy systems that forces a permanent short circuit in less than 1 millisecond in the event of a ...