An electromagnet which, when a voltage is applied, actuates a tripping mechanism. When de-energized, the system is in the rest
position. A normally open contact actuates the system. If the shunt release is rated for intermittent duty, the intermittent operation
must be ensured by positioning appropriate auxiliary contacts (usually HIN/S1) upstream of the circuit-breaker.
Shunt releases are used for remote tripping when an interruption in
the voltage is not intended to lead to automatic disconnection. Tripping does not occur in the event of wire breakage, loose
contacts or undervoltage.
