The Siemens SENTRON 3VA2110-7MN36-0AD0 is a 3-pole molded case circuit breaker (MCCB) rated for 100 A continuous current, designed specifically for motor protection with integrated phase failure detection. It carries a 330 kA interrupting capacity at 240 V, derating to 242 kA at 415 V and 440 V, 187 kA at 500 V, and 3.7 kA at 690 V — the steep drop above 500 V means the unit is optimized for low-voltage distribution up to 500 V, not for 690 V systems where the SCCR falls below typical motor-starting fault levels.
Motor Protection and Phase Failure Detection
This MCCB is built for motor protection duty — the thermal-magnetic trip curve is matched to motor inrush and locked-rotor profiles, not general distribution. Phase failure detection is built in, so a lost phase on the line side trips the breaker before single-phasing cooks the motor windings. That makes it a direct fit for a motor branch circuit on a conveyor, pump, or compressor where a standard distribution breaker would let a phase-loss condition ride through. The 100 A continuous rating holds flat across the full operating temperature range from 40 °C to 70 °C (–) — no derating needed in a warm panel. Maximum power loss is 10 W, manageable for DIN-rail density without forced ventilation. It ships with three HQ auxiliary switches integrated into the basic switch assembly (: 3VA21107MN360AA0), providing status feedback for remote monitoring or PLC interlocking without an add-on module.
Physical Fit and Panel Integration
Dimensions are 105 mm wide, 181 mm high, 86 mm deep (–). The 105 mm width is a standard 3-pole MCCB footprint for Siemens 3VA frames, so it drops into existing panel cutouts and busbar connections without adapter plates. No undervoltage release, no voltage trip, no ground-fault module — it is a straight thermal-magnetic motor protector with auxiliary contacts only.