The KHL3600M1143 is a 3-pole motor circuit protector (MCP) from Schneider Electric’s Square D PowerPact K-Frame series, designed specifically for use ahead of motor starters rather than as general branch-circuit or feeder protection. Unlike a standard thermal-magnetic breaker, the KHL3600M1143 provides instantaneous magnetic protection only, with no thermal overload element, since motor overload protection is intended to come from the separate starter or overload relay downstream. Rated for 250 at 600, it is built for motor control applications in industrial and commercial installations.
Electrically, the KHL3600M1143 features an adjustable instantaneous magnetic trip, allowing it to be set to ride through a motor’s inrush current while still providing fast protection against short circuits and ground faults. It carries an interrupting capacity of {aic rating}. Because it has no thermal overload function, the KHL3600M1143 must always be paired with a motor starter that includes its own overload protection, in line with NEC requirements for motor branch-circuit, short-circuit, and ground-fault protection.
Mechanically, the KHL3600M1143 uses a feed-thru connection and is built on the K-Frame platform for unit-mount installation in compatible enclosures, motor control centers, and industrial control panels. Its molded case and toggle operator allow straightforward manual ON/OFF control and reset after a trip event. This makes the KHL3600M1143 a dependable, code-compliant choice for protecting motor branch circuits from short-circuit and ground-fault conditions.
Purchase the KHL3600M1143 at Electrical.com, your reliable partner for industrial and commercial electrical products. Our selection includes trusted circuit breakers and motor circuit protectors from manufacturers like Square D, Schneider Electric, Siemens, Eaton, and Cutler-Hammer, backed by a knowledgeable sales team ready to assist with technical questions, product selection, and support.