What this MCCB brings to the panel
This Siemens SENTRON 3VA1110-5EF36-0HH0 is a 3-pole molded case circuit breaker sized for line protection duty. It's rated 100 A continuous at 40 °C and holds that rating all the way up to 50 °C — above that it derates to 98 A at 55 °C, 96 A at 60 °C, 94 A at 65 °C, and 91 A at 70 °C. The interrupting capacity is the headline here: 187 kA at 240 V, 121 kA at 415 V, 75.6 kA at 440 V, and still 17 kA at 500 V and 690 V. That kind of short-circuit headroom means this breaker can sit close to a large transformer or high-fault bus without needing a current-limiting upstream device.
Integration and mounting
The breaker measures 76.2 mm wide, 130 mm tall, and 70 mm deep — a compact 3-pole footprint that clips onto standard DIN rail inside an enclosure. It comes with a shunt trip (STL) auxiliary release and is configured with 2 auxiliary switches plus 1 trip alarm switch (HQ), so you get both status feedback and remote trip capability without adding external relay logic.