What this MCCB carries and where it fits
The Siemens 3VA2110-6HN32-0CL0 is a SENTRON molded case circuit breaker (MCCB) rated for 100 A continuous current across the full ambient range from 40 °C to 70 °C — no derating needed up to that ceiling. Its interrupting capacity hits 242 kA at 240 V and 187 kA at 415 V, which puts it squarely in high-fault-current distribution panels where upstream transformer capacity or parallel-feed conditions demand a breaker that won't vent or fail short. Three poles, line-protection design, and the integrated undervoltage release (UVR) mean it drops the load if control voltage is lost — a common requirement for emergency-stop circuits or undervoltage lockout schemes.
Interrupting capacity and coordination
At 240 V the breaker clears 242 kA — a figure that covers most secondary-side faults from large distribution transformers. At 415 V it still holds 187 kA, and at 690 V it drops to 3.7 kA, which is still adequate for most 690 V motor circuits in industrial plants. The 100 A frame with this interrupting class means you can use it as a main or feeder breaker in switchboards where selective coordination with downstream 18 kA or 25 kA MCCBs is required; the high withstand lets you set longer time delays without melting the main.
Auxiliary and alarm switching built in
This variant ships with two auxiliary switches, one trip alarm switch, and one electrical alarm switch (HQ type) — enough to signal breaker position and fault status back to a PLC or SCADA without adding external relays. The undervoltage release is factory-fitted, so if your spec calls for UVR on the MCCB, this order code saves the separate kit and wiring step.
Physical fit and panel integration
Dimensions are 105 mm wide, 181 mm high, 86 mm deep — a standard 3-pole MCCB footprint that fits most DIN-rail or panel-mount enclosures. The depth of 86 mm (3.39 in) leaves room for rear-connected busbars or cable lugs in a 200 mm deep cabinet.