Siemens LMXD63B800 Molded Case Circuit Breaker

Siemens LMXD63B800 is a three‑pole molded‑case circuit breaker rated for 800 A at 600 V AC, part of the Sentron LMXD family. It employs a thermal‑magnetic trip unit with a fixed, non‑interchangeable mechanism to provide reliable overcurrent protection in industrial power distributions. Built on the LMD frame, this 800 A MCCB is specified for operation in 40 °C ambient environments and is capable of interrupting high fault currents with a published rating of 50 kAIC at 600 V (and 65 kAIC at 480 V where applicable). This makes it suitable for feeders and large‑motor circuits in manufacturing, data centers, and other heavy industrial applications where robust short‑circuit protection is required. The device is designed for integration in Siemens‑backed systems and can be paired with appropriate accessories per panel requirements, delivering a high‑capacity, compact solution for 600 V class installations.