What this MCCB is and what it carries
The Siemens SENTRON 3VA1110-6EF32-0JA0 is a 3-pole molded case circuit breaker (MCCB) designed for line protection, fitted with a TM240 thermal-magnetic overcurrent release and a shunt trip (STL) auxiliary release. Rated 100 A continuously at 40 °C, it derates to 91 A at 70 °C — the thermal curve matters if this breaker lives in a hot enclosure or next to other heat sources. Breaking capacity is 220 kA at 240 VAC, 154 kA at 415 V, 121 kA at 440 V, and holds 17 kA all the way up to 690 V — that 690 V figure is the one to check for 600 V class installations where most MCCBs drop off sharply. Rated insulation voltage is 800 V, and maximum power loss is 25 W — factor that into enclosure thermal calculations if the panel is densely packed.
Panel fit and environment
Dimensions are 130 mm high, 76.2 mm wide, 70 mm deep — a standard MCCB footprint that drops into most SENTRON panelboards and distribution blocks without re-drilling. Operating range is -25 °C to 70 °C; storage range is -40 °C to 80 °C. The storage minimum matters if the breaker sits in an unheated warehouse before installation.