What this breaker is and what the ratings mean
The Siemens SENTRON 3VA2110-5KP32-0AC0 is a 3-pole molded case circuit breaker rated for 100 A continuous current at 40 °C through 70 °C — no derating needed across that temperature band, which simplifies panel design in warm enclosures. Its 187 kA breaking capacity at 240 V AC means it can safely interrupt a fault of that magnitude without upstream devices needing to coordinate; at 415 V and 440 V it still holds 121 kA, and at 500 V it delivers 75.6 kA. The 800 V rated insulation voltage gives headroom for 480 V systems and some 600 V class applications. This is a line-protection design with a communication function — it can talk to a BMS or PLC for remote monitoring, but it's not a ground-fault or undervoltage release variant (those options are absent here). The auxiliary switch complement is two HQ switches, and the basic switch supplied is order code 3VA21105KP320AA0.
Panel fit and deployment context
At 86 mm deep, 105 mm wide, and 181 mm tall, this breaker fits standard distribution panel cutouts for 3-pole MCCBs in the 100 A class. The 3-pole form factor means it occupies three module spaces on a DIN rail or panel-mount chassis. The communication function requires a connection to the control network — plan for a spare port on the BMS or PLC gateway. The 10 W maximum power loss is low enough that forced cooling isn't needed in most enclosures, but if you're packing multiple breakers in a small cabinet, add up the losses against the enclosure's dissipation rating.