General Electric THKM Series circuit breakers, featuring B curve attributes, are designed for protecting electrical devices from overload and current surges. These IEC supplementary protectors come with a electromechanical (thermal magnetic) trip unit, sensitive to both current flow and temperature, capable of providing instantaneous and long-time current limiting functions. They are integrated with line- and load-side lug terminals, with feed-thru connections, for quick and secure field installations. The TKM frame of these devices, with 3-pole configuration, delivers interrupting capacities up to 35kA at 480V; suitable for reverse feed applications. Choose from a wide range of these circuit breakers available in current ratings ranging from 300 to 1200A on Raptor Supplies.