What it is and what it does
The Siemens 3VA2010-5HL32-0KL0 is a SENTRON 3VA2 molded case circuit breaker (MCCB) rated for line protection — the primary job is protecting cable and bus from overload and short-circuit faults in a distribution panel. It carries a continuous current rating of 100 A at 40 °C through 70 °C, meaning no derating is needed across that entire ambient range — that's a straight 100 A all the way up to a 70 °C panel interior, which saves you a calculation step on a hot switchroom lineup. Three poles, so it switches all phases on a three-phase supply. The breaking capacity runs 187 kA at 240 V, 121 kA at 415 V and 440 V, 75.6 kA at 500 V, and 3 kA at 690 V — that 187 kA figure at 240 V is the headline number for high-fault北美 panels; the 121 kA at 415 V covers the common European 400 V distribution bus.
Fit and panel integration
Dimensions are 105 mm wide, 181 mm tall, 86 mm deep — that depth is the key fit dimension for a shallow enclosure backpan. The 105 mm width is the standard 3-pole MCCB footprint for this frame size; it occupies one 105 mm slot on a DIN-rail or panel-mount assembly. The auxiliary switch block is factory-configured as 2 auxiliary switches + 1 trip alarm switch + 1 electrical alarm switch HQ. That gives you two NO/NC auxiliary contacts for status feedback, plus a separate trip-indicating contact and an electrical alarm contact — enough for a remote indication and a PLC digital input without adding a second accessory module. A shunt trip (STL) auxiliary release is built in, so the breaker can be tripped remotely by a separate control voltage — useful for emergency-stop circuits or supervisory shutdown.
Lifecycle and sourcing
Maximum power loss is 13.5 W — that's the heat the breaker dissipates at full rated current. In a sealed enclosure with multiple breakers side by side, that figure feeds the thermal budget for the panel design.