The Siemens 3VA1150-6GD46-0AA0 is a 4-pole SENTRON molded case circuit breaker rated for 50 A continuous at 40 °C through 50 °C, with a TM210 thermal-magnetic release — fixed thermal, fixed magnetic, no trip indicator, no undervoltage release, and no communication function. The 50 A rating holds flat across the 40 °C to 50 °C band, then derates to 49 A at 55 °C, 48 A at 60 °C, 46 A at 65 °C, and 45 A at 70 °C — a gentle slope that keeps the breaker usable in a warm enclosure without oversizing. Breaking capacity is where this part earns its place: 220 kA at 240 V, 154 kA at 415 V, 121 kA at 440 V, and 17 kA at both 500 V and 690 V.
At 70 mm deep and 101.6 mm (4 in) wide, the 3VA1150-6GD46-0AA0 fits a standard 4-pole MCCB slot on a DIN rail or through a panel cutout. Power loss is 14.6 W maximum — modest enough that adjacent breakers in a multi-unit lineup do not need extra ventilation at 50 A, but worth checking on a densely packed rail at the 70 °C end of the operating range.