The Siemens SENTRON 3VA2110-5KP32-0AH0 is a 3-pole molded case circuit breaker (MCCB) rated for 100 A continuous current, with a maximum interrupting capacity of 187 kA at 240 V AC. It's designed for line protection in distribution panels and switchgear, carrying an 800 V rated insulation voltage.
Interrupting capacity across the voltage curve
The interrupting rating drops predictably as voltage rises: 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 3.7 kA at 690 V is the number to check if this breaker lands in a 690 V line — it's not a high-fault device at that voltage.
Thermal performance and power loss
The breaker holds its full 100 A rating from 40 °C through 70 °C ambient — no derating needed across that range. Maximum power loss is 10 W, which matters for enclosure heat calculations in a densely packed panel.
Physical fit and auxiliary switching
Dimensions are 105 mm wide, 181 mm high, 86 mm deep — standard 3-pole MCCB footprint for DIN-rail or panel-mount integration. Ships with 2 auxiliary switches plus 1 trip alarm switch (HQ type), so you get status feedback and alarm signaling without adding external relay blocks.