Siemens 48HC31A2 U Molded Case Circuit Breaker

Siemens 48HC31A2 U Molded Case Circuit Breaker is a three-pole MCCB with a nominal current rating of 115 A and a voltage rating up to 600 V, built to interrupt fault currents in three-phase power systems. Housed in a molded enclosure, the device provides overload and short-circuit protection for feeders and branch circuits in industrial or commercial distribution panels, and the three-pole design ensures all three phases are interrupted simultaneously for proper protection of 3‑phase loads. This specific part number identifies a standard configuration intended for use in compatible Siemens panelboards and enclosures that accept MCCB devices, enabling straightforward integration into existing protection schemes. Exact trip characteristics, installation dimensions, terminal torque, and mounting details are specified in the official Siemens catalog for 48HC31A2 U, so verify those parameters against your panel's requirements before purchase or installation. When selecting protection for a 115 A, 600 V 3P circuit, this Siemens MCCB offers a direct fit for applications such as motor feeders, power distribution circuits, and equipment feeds that demand reliable interruption of fault currents while maintaining clear coordination with upstream protective devices.