The shunt trip with lockout is identical to the regular shunt trip, but when energized, it will also prevent closure of an "open" breaker by mechnically blocking both manual and electrical closing. When energized, the closing springs will not discharge, the movable contacts will not move; the contacts are "kiss free". The shunt trip accessory is an electronic module which provides remote control capability to open the circuit breaker. When activated, the shunt trip sends a signal to the trip unit to open the breaker. This allows the trip unit to record, display, and communicate (in MicroVersaTrip PM trip units) that the opening event was initiated by the shunt trip device. The shunt trip is continuously rated and requires no cut-off switch. When energized, the shunt trip supplies +24 Vdc power to the trip unit to power the display.