Miniature Circuit Breakers (MCBs) are safety locks that prevent short circuits and overcurrents in electrical circuits. Several different MCB types are available – types A, B, C, D, K, and Z – all of which are designed to respond to the expected power of electrical surges in different settings.
Below are the most commonly used Miniature Circuit Breaker (MCB) lockout devices:
Pin-Out Wide – designed for single- and multi-pole circuit breakers; accommodates up to ⅘” hole spacing.
Pin-In Standard – designed for single- and multi-pole circuit breakers; accommodates up to ½” hole spacing.
Pin-Out Standard – designed for single- and multi-pole circuit breakers; accommodates up to ½" hole spacing.
Tie Bar – designed for single- and multi-pole circuit breakers; best use for circuit breakers with tie bars.