What this 100 A MCCB carries
The Siemens 3VA2110-5HL32-0KC0 is a SENTRON 3VA2 molded case circuit breaker rated for 100 A continuous current with zero derating from 40 °C through 70 °C — that 100 A holds across the whole ambient range, so no temperature-compensated downsizing in a warm panel. Three-pole construction, designed for line protection. The shunt trip (STL) release allows remote tripping, and the two HQ auxiliary switches give status feedback without an add-on module. Breaking capacity runs 187 kA at 240 V, 121 kA at 415 V and 440 V, 75.6 kA at 500 V, and 3.7 kA at 690 V — that curve tells you this breaker is built for high-fault commercial and industrial distribution, not light branch circuits. Power loss maxes at 10 W, operating temperature spans -25 °C to 70 °C, storage from -40 °C to 80 °C.
What the shunt trip and aux switches mean on a panel
The shunt trip (STL) release lets you kill the breaker remotely — emergency-stop circuit, fire-alarm shunt, or PLC-driven trip. No communication function onboard (: No) — this is a standalone breaker, not a metering or comms device. The supplied basic switch is 3VA21105HL320AA0 — that's the internal switching mechanism. If you're ordering spare parts, that's the sub-assembly number.