300 Amps, 3 Pole, Bolt-On, And Thermal Magnetic Approval ULMfg Status: Obsolete, Residential/Commercial CJ3B300 Thermal magnetic 3 Pole Cordon ETC fused circuit breaker, 200,000 AIC Rated. Thoroughly rebuilt and tested. Sold as New and Reconditioned, specify new or green. Fits older ITE panel boards FC-1.Recondition / Green only. 9w by 15 1/4 high by 5 1/2 deep. Breaker will not engage or operate when fuses are blown. Breaker will not reset if fuse back is not seated properly in position. Sold as Green/Refurbish."