170-001-125, Labinal Power Systems, Circuit Breaker, 125 amp Single-Pole High Performance Protection For Very High Current Rated Circuits, interrupting Capacity 3,000A at 28V, DC; 2,500A at 115V, AC. Extra heavy contacts and wide sturdy terminals. It is the only device in this range that has mounting dimensions compatible with Military Standard Drawing MS25017. Designed to protect heavy-duty aircraft electrical systems, the breaker features separate overload and mechanical latches. The unit’s trip-free design prevents it from being held closed manually against any overload that would ordinarily cause it to open. The breaker may be used on either AC or DC circuits.