The Siemens 3VA2110-7MN36-0AJ0 is a SENTRON molded case circuit breaker (MCCB) rated for 100 A continuous current across its full ambient temperature range from 40 °C to 70 °C, meaning no derating is needed in a warm panel — it holds 100 A all the way up. Designed specifically for motor protection, it includes phase failure detection and a trip indicator, so it catches a lost phase before the motor burns out.
Short-circuit ratings and selectivity headroom
This 3-pole MCCB carries a short-circuit breaking capacity of 330 kA at 240 V, 242 kA at 415 V and 440 V, 187 kA at 500 V, and 3.7 kA at 690 V. At typical industrial distribution voltages (415 V), the 242 kA SCCR gives substantial headroom for high-fault panels — you can coordinate it downstream of a main breaker without worrying about cascading failure. The 3.7 kA at 690 V is a sharp drop-off, so if your system runs at 690 V, verify the available fault current stays under that threshold.
Physical fit and panel integration
Dimensions are 86 mm deep, 105 mm wide, and 181 mm high. The 105 mm width is standard for a 3-pole MCCB in this frame size — it fits the usual DIN-rail or panel-mount footprint without needing extra side clearance. Maximum power loss is 10 W, which is modest for a 100 A breaker; ventilation in a standard enclosure handles it without forced cooling.
Auxiliary switching and monitoring
Comes fitted with 2 auxiliary switches and 1 trip alarm switch (HP type), giving you remote status of the breaker position and whether it tripped on fault. The trip indicator on the front confirms the trip cause locally. No undervoltage release or ground-fault monitoring is included on this variant — those are separate options if your circuit requires them.