MCCB with shunt trip and communication — panel-builder's note
The Siemens SENTRON 3VA2140-7MQ36-0JA0 is a 3-pole molded case circuit breaker rated for 40 A continuous at 40 °C, with no derating needed up to 70 °C — the thermal curve holds flat across the full operating range. The interrupting ratings climb to 330 kA at 240 V, 242 kA at 415 V and 440 V, 187 kA at 500 V, and drop to 3.7 kA at 690 V. That SCCR headroom at the lower voltages makes this breaker a strong choice for high-fault-capacity main or feeder positions in a panel. The 86 mm depth by 105 mm width by 181 mm height footprint fits standard SENTRON 3VA2 panel cutouts.
These match the standard 3VA2 molded-case breaker footprint, so a panel already cut for a 3VA2 frame accepts this unit without rework. The 3-pole width of 105 mm means it occupies roughly 4.1 inches of DIN-rail or mounting-plate space.