Low instantaneous level circuit breakers, circuit breaker tripping mechanisms, and tripping methods

摘要

A circuit breaker tripping mechanism providing relatively low instantaneous level tripping is disclosed. Circuit breaker tripping mechanism includes an armature with a first portion extending in a first direction from an armature pivot and a second portion extending in a second direction from the armature pivot, and a magnetic field generator configured as part of a line conductor. Magnetic field generator is operable to produce a magnetic field acting upon the second portion during a short circuit. Circuit breakers including the circuit breaker tripping mechanism and methods of tripping a circuit breaker are provided, as are other aspects.

主权项

1. A circuit breaker tripping mechanism, comprising:
a circuit breaker mechanism housing; an armature including a first portion extending in a first direction from an armature pivot, and a second portion extending in a second direction from an armature pivot; a magnetic field generator configured as part of a line conductor that is operable to produce a magnetic field acting on the second portion during a short circuit, wherein the magnetic field generator includes a core and a coil of wire of a line conductor wound about the core and electrically connected between a line power connection and a first electrical contact outside the circuit breaker mechanism housing; and a separating wall provided between a location of the first electrical contact, a second electrical contact and the magnetic field generator.