What this MCCB carries and where it fits
The Siemens 3VA1150-6GE46-0AA0 is a 4-pole SENTRON molded case circuit breaker rated for 50 A continuous, with a TM220 thermal-magnetic release designed for line protection. The 220 kA breaking capacity at 240 V AC is the headline number that governs fault interruption in high-available-fault-current panels — that rating drops to 154 kA at 415 V and 121 kA at 440 V, then to 17 kA at 500 V and 690 V, so the voltage class of your distribution determines where this breaker can clear a fault without cascading upstream. The 4-pole construction suits three-phase-plus-neutral or three-phase-plus-switched-pole applications where full isolation is required. The TM220 release means thermal protection for overloads and magnetic (instantaneous) for short circuits, factory-set with no trip indicator or undervoltage release on this variant. It carries no communication module and no ground-fault monitoring — this is a straight line-protection breaker, not a metering or remote-trip device. The IP40 front protection keeps dust out of the enclosure face; the rest of the breaker relies on the panel's own IP rating.
Thermal derating and panel integration
The breaker holds its full 50 A rating from 40 °C up to 50 °C ambient. At 55 °C it derates to 49 A, at 60 °C to 48 A, at 65 °C to 46 A, and at 70 °C to 45 A. The maximum operating temperature is 70 °C; storage range is -40 °C to 80 °C. The 14.6 W maximum power loss at rated current matters for enclosure thermal calculations — if you pack several breakers in a sealed panel, that heat adds up and may require derating or forced ventilation. Dimensions are 130 mm height, 101.6 mm width, 70 mm depth — a standard SENTRON 3VA footprint that mounts on DIN rail or directly to a backplate. The 4-pole width is wider than a 3-pole equivalent; verify the panel's gland-plate cutout and busbar spacing before committing the BOM line.