SENTRON 3VA2110-5KP32-0KC0 — 100 A MCCB with shunt trip and comms
The Siemens SENTRON 3VA2110-5KP32-0KC0 is a 3-pole molded case circuit breaker rated for 100 A continuous current, designed for line protection in distribution panels. It carries a 187 kA interrupting capacity at 240 V and 121 kA at 415 V, giving you headroom for high-fault service-entrance or sub-feed applications. The built-in shunt trip (STL) and two HQ auxiliary switches let you integrate remote tripping and status feedback without adding external accessories. Communication function is onboard, so it can talk to a BMS or PLC for load monitoring and event logging.
What the ratings mean for panel fit
The 100 A rating holds flat across the full ambient range from 40 °C to 70 °C — no derating needed when the panel runs hot. That 187 kA SCCR at 240 V means this breaker can safely interrupt a fault up to that level without upstream fuses needing to clear first, which simplifies coordination studies. At 690 V it still handles 3.7 kA, covering most industrial motor branch circuits. The 86 mm depth, 105 mm width, and 181 mm height fit standard Siemens 3VA panel cutouts; if you're swapping in from a 3VA2116 frame, check the mounting footprint — the 3VA2110 is the smaller frame size.