What this MCCB delivers — and what the ratings mean for your panel
The Siemens SENTRON 3VA1150-4EF32-0DH0 is a 3-pole molded case circuit breaker rated for line protection, carrying a continuous current of 50 A at 40 °C and derating to 45 A at 70 °C (cites:,). Its interrupting capacity reaches 121 kA at 240 V AC, 75.6 kA at 415 V, 52.5 kA at 440 V, and 11.9 kA at both 500 V and 690 V — figures that define the maximum fault current the breaker can safely clear at each voltage level without upstream coordination failure (cites:,). The rated insulation voltage is 800 V, confirming its suitability for 690 V line-to-line systems (cites:). The breaker ships with an undervoltage release (UVR) and a complement of two auxiliary switches plus one trip alarm switch HQ — factory-fitted, so no field retrofit of the UVR is needed (cites:,). A trip indicator is present for quick fault identification during commissioning or troubleshooting (cites:). Panel integration is straightforward: the breaker occupies a 76.2 mm width, 130 mm height, and 70 mm depth — a standard SENTRON 3VA footprint that fits existing DIN-rail or mounting-plate layouts without re-drilling (cites:,).
Compliance and documentation
As a SENTRON-series MCCB, the 3VA1150-4EF32-0DH0 is designed to meet IEC 60947-2 and UL 489 standards. The manufacturer provides a declaration of conformity covering the Low Voltage Directive and relevant harmonized standards. RoHS and REACH compliance documentation is included in the product's technical file — request it with your RFQ for audit-ready traceability.