SENTRON 3VA1110-5EE32-0BA0 — 100 A MCCB with TM220 Release and Undervoltage Trip
The Siemens SENTRON 3VA1110-5EE32-0BA0 is a 3-pole molded case circuit breaker (MCCB) rated for line protection, carrying 100 A continuously at 40 °C ambient with no derating needed up to 50 °C — it holds the full 100 A at 50 °C, then steps down to 98 A at 55 °C and 91 A at 70 °C. Breaking capacity hits 187 kA at 240 V AC and 121 kA at 415 V AC, so it handles high-fault utility feeds without cascading upstream breakers. The TM220 thermal-magnetic overcurrent release provides fixed thermal and magnetic trip settings; the built-in undervoltage release (UVR) drops the breaker on loss of control voltage, which is standard for emergency-stop or safety-disconnect circuits where a voltage-monitored coil must force the main contacts open.
Breaking Capacity and Selectivity Planning
At 240 V the unit interrupts 187 kA — that is the full rated short-circuit current the breaker can clear without welding or rupture. At 415 V it still manages 121 kA, and at 440 V it drops to 75.6 kA. For a 500 V or 690 V system the rating settles at 17 kA. The 800 V rated insulation voltage confirms the internal creepage and clearance are sized for 690 V line-to-line applications, but the interrupting capability at those voltages is lower. When you are coordinating selectivity downstream, the 100 A frame and the TM220 release give you a predictable let-through energy band for the next breaker in the chain.
Physical Fit and Panel Integration
The case measures 130 mm high by 76.2 mm wide by 70 mm deep — a standard 3-pole MCCB footprint that fits most DIN-rail or panel-mount enclosures without re-drilling. The supplied basic switch (order code 3VA11105EE320AA0) is the internal switching mechanism; the external order code 3VA1110-5EE32-0BA0 includes the undervoltage release already installed. Maximum power loss is 27.5 W, which matters for enclosure thermal rise calculations if you are packing several breakers in a sealed cabinet.