63 A MCCB with shunt trip — line protection for distribution panels
The Siemens SENTRON 3VA1163-5EF32-0KA0 is a 3-pole molded case circuit breaker rated for 63 A continuous at 40 °C, with a TM240 thermal-magnetic overcurrent release and an integrated shunt trip (STL) for remote tripping. It's designed for line protection in main distribution boards and sub-distribution panels, where the 187 kA breaking capacity at 240 V handles high-fault scenarios without cascading upstream. The 76.2 mm width (3 in) and 70 mm depth (2.76 in) fit standard SENTRON panel footprints — no rework needed for a drop-in replacement in an existing 3VA1 lineup.
Breaking capacity across voltage levels
This MCCB delivers 187 kA at 240 V, 121 kA at 415 V, 75.6 kA at 440 V, and 17 kA at both 500 V and 690 V. The steep drop above 440 V means you need to verify the available fault current at the installation point — at 690 V the 17 kA rating still covers most industrial secondary distribution, but not primary feeds. The TM240 release is fixed, so no field adjustment of the thermal or magnetic trip settings.
Sourcing and availability
The 3VA1163-5EF32-0KA0 is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time. For BOM freeze or line-down situations, the active lifecycle means no last-time-buy pressure — but always confirm lead time at quote, as industrial MCCB demand can tighten supply windows.