What this MCCB is and what it does
The Siemens SENTRON 3VA2110-5MN32-0BA0 is a 3-pole molded case circuit breaker (MCCB) rated for 100 A continuous current across the full 40 °C to 70 °C ambient range — no derating needed up to that ceiling. It's the motor protection variant, meaning the ETU350M electronic release includes phase failure detection and undervoltage release, so it's built for motor branch circuits where you need coordinated protection against single-phasing and brownout conditions.
Breaking capacity — what the numbers mean for your panel
The interrupting ratings on this breaker are the real story. At 240 V it clears 187 kA — that's utility-grade fault current, typical for large transformer secondaries or industrial service entrances. At 415 V and 440 V it holds 121 kA, and at 500 V it still manages 75.6 kA. The drop to 3.7 kA at 690 V tells you this is a 600 V class frame; don't spec it for 690 V motor circuits unless the available fault current is well under that. For most 400 V distribution panels in North America or Europe, the 121 kA at 415 V gives you plenty of headroom for selective coordination downstream.
Panel fit and integration
Dimensions are 105 mm wide, 181 mm tall, 86 mm deep — a standard 3-pole MCCB footprint for DIN-rail or panel-mount installation. The front face carries IP40 protection, so it's fine for enclosed switchgear but not for washdown environments. The ETU350M release is field-configurable; no communication function on this variant, so coordination settings are adjusted via the rotary dials on the front.