Square D LH molded case circuit breakers offer thermal magnetic protection, automatically opening a circuit in case of overload or short circuit conditions, or manual opening through the Push-to-Trip feature. Each pole contains thermal and magnetic sensing elements, providing comprehensive protection against various types of faults. The LH breaker is a 3-pole unit suitable for 250A and 600VAC applications, with an interrupting rating of 25kA for 600VAC and 50kA for 250VDC, and is certified to UL 489, CSA, IEC standards.