The 170 series is the only compact, reliable, heavy-duty aircraft-type circuit breaker available in the 125 to 200 ampere range.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.

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