What this MCCB delivers for a motor-protection circuit
The Siemens 3VA2110-7MP36-0AA0 is a 3-pole SENTRON molded case circuit breaker rated for 100 A continuous current across its full ambient range — no derating needed from 40 °C up through 70 °C, which simplifies panel layout when the breaker sits near other heat sources. It is purpose-built for motor protection, with an adjustable trip class that lets you set the overload curve to match the starting characteristics of the connected load — selectable between CLASS 10A, 10/10E, 20/20E, or 30/30E. Breaking capacity reaches 330 kA at 240 VAC, dropping to 242 kA at 415 V and 440 V, 187 kA at 500 V, and 3.7 kA at 690 V — numbers that matter when coordinating with upstream transformers or generators in a high-fault installation.
Integration into a motor control center or panel
Dimensions of 105 mm wide by 181 mm tall by 86 mm deep place it in the standard MCCB footprint for a 100 A frame — fits existing bus-bar and lug layouts without panel rework. Built-in phase failure detection and a communication function allow the breaker to report status and trip events to a PLC or SCADA system, cutting down on manual troubleshooting for a remote motor line. Operates from -25 °C to 70 °C ambient and survives storage from -40 °C to 80 °C; maximum power loss is 10 W, so ventilation requirements in a sealed enclosure are modest.
Sourcing and lifecycle posture
Rated insulation voltage is 800 V, which aligns with standard 690 VAC motor circuits and leaves headroom for grounded-wye systems.