MCCB for line protection — 100 A continuous, 242 kA interrupting
The Siemens SENTRON 3VA2110-6HN32-0HA0 is a 3-pole molded case circuit breaker rated for 100 A continuous current at 40 °C, with a maximum interrupting capacity of 242 kA at 240 V AC. That 242 kA figure means it can safely clear a fault up to that level without upstream devices needing to trip — critical for high-fault panels near large transformers or utility feeds. At 415 V the rating holds at 187 kA, and at 690 V it drops to 3.7 kA, so the voltage-dependent curve governs where you place it in the distribution.
Shunt trip and thermal performance
This MCCB includes a shunt trip (STL) auxiliary release for remote tripping — useful for emergency-stop circuits or supervisory shutdown. The continuous current rating holds flat at 100 A from 40 °C through 70 °C, so no derating needed in a warm panel as long as ambient stays under 70 °C. Rated insulation voltage is 800 V, and maximum power loss is 10 W. The design is line protection (not motor or feeder), meaning the trip curve is shaped for cable and busbar protection.
Physical fit and panel integration
Dimensions are 86 mm deep, 105 mm wide, 181 mm high. The 105 mm width is standard for a 3-pole MCCB in the SENTRON 3VA2 frame — it occupies a single module position on a DIN rail or bolts directly onto a mounting plate. Depth of 86 mm leaves clearance for rear-connected busbars or cable lugs in a standard 200 mm deep enclosure. Operating temperature range is -25 °C to 70 °C; storage range is -40 °C to 80 °C.