What this MCCB carries — and what it doesn't
The Siemens SENTRON 3VA1132-6EF32-0CA0 is a 3-pole molded case circuit breaker rated 32 A continuous at 40 °C through 50 °C, with a TM240 thermal-magnetic overcurrent release and an integrated undervoltage release (UVR). Breaking capacity is 220 kA at 240 VAC, derating to 154 kA at 415 VAC and 121 kA at 440 VAC — figures that place it in the high-interrupting category for industrial distribution. Rated insulation voltage is 800 V, and maximum power loss is 13.1 W.
Thermal derating and operating envelope
Rated current holds at 32 A from 40 °C to 50 °C, then drops to 31 A at 55–60 °C and 30 A at 65–70 °C — a shallow derating curve that gives panel builders headroom in warm enclosures. Operating temperature range is -25 °C to 70 °C; storage range is -40 °C to 80 °C.
Physical fit and release configuration
Measures 130 mm high, 76.2 mm wide, 70 mm deep — a standard SENTRON 3VA frame footprint that drops into existing 3VA panel layouts without re-drilling. Designed for line protection, with a TM240 thermal-magnetic release and an undervoltage release (UVR) as the auxiliary release. No ground-fault monitoring, no communication function, no trip indicator.