Helping the mining industry grow in a sustainable wayLearn more
Energy education from anywhere for efficiency everywhereFree Online Courses
Your fastest way to answers!Download Now
Schneider Electric Egypt×
The standard defines two utilization categories, A and B; depending on breaker discrimination with upstream breakers under short-circuits conditions. Category A. Circuit breakers not specifically designed for discrimination applications.
Category B. Circuit breakers specifically designed for discrimination, which requires a short time-delay (which may be adjustable) and a rated short-time withstand current in compliance with the standard.
Compact NSX100 to 630 circuit breakers are category A, however, by design, they provide discrimination with downstream devices (see the Complementary technical information guide)
Sign up for all the latest solutions, offers and best practices straight to your inbox.
We are excited that you have joined the group. You will receive your welcome email soon describing the program and what to expect in the upcoming weeks. Enjoy!