FPE NFJ Series circuit breakers are designed for providing protection against severe short-circuit and current overload conditions in load centres, panelboards, switchboards and busbars. These devices feature a non-interchangeable, thermal magnetic trip mechanism to open the circuit automatically at a predetermined value of current overload. They are integrated with a bolt-on mounting design for facilitating quick and easy installation, as well as frequent rearrangements. Choose from a wide array of these circuit breakers available in amperage ratings ranging from 90 to 250A on Raptor Supplies.