Used on air circuit breaker; nsn 5925-01-247-3773; onboard 270 ft wmec coast guard vessels. 8.000" overall length 4.000" overall width unc thread series
Used on 5925-00-975-3924,circuit breaker ships service switchboard onboard 270 ft wmec coast guard vessels. 3.500" overall length time delay 0.1 to 0.5 seconds; trips breaker at 30 to 60% rated voltage; unef thread on mounting