Cutler Hammer Molded Case Circuit Breaker its a three pole 150 ampere with F type frame easy to install feed-thru and complete non-interchangeable trip Long-Time and Instantaneous with thermal magnetic tripping method.

FDB3150L, Westinghouse,Cutler Hammer,Eaton, Series C, type FDB, 3P, 3PH, 150A, 600V, 14kA@480V, standard interrupting capacity, 40ºC, feed-thru, complete with non-interchangeable trip, LI - Long-Time and Instantaneous trip functions and line & load side lug terminals, thermal magnetic molded case circuit breakers