Special Features:

Undervoltage tri (mn), shunt trips (mx1 and mx2), and shunt close(xf) for masterpact nw circuit breakers

Properties:

Two or more different types of items, having a common mounting or mounted on each other, which together form a portion of a circuit breaker, but which in itself is not a complete functioning item and cannot be assigned a more definite item name. Excludes coil, electrical; thermal release, circuit breaker; and tripper, circuit breaker.