The Utilisation category of EasyPact MVS circuit breakers is ‘B’.
The standard IEC 60947-2 defines two utilisation categories, A and B, depending on breaker discrimination with upstream breakers under short-circuit 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.