Siemens SENTRON 3VA1150-6ED36-0AA0 — 50 A MCCB, 500 A Frame, TM210 Release
The Siemens SENTRON 3VA1150-6ED36-0AA0 is a 3-pole molded case circuit breaker (MCCB) rated for 50 A continuous current on a 500 A frame, with a TM210 thermal-magnetic overcurrent release. It delivers a 220 kA interrupting capacity at 240 V AC, stepping down to 154 kA at 415 V, 121 kA at 440 V, and 17 kA at both 500 V and 690 V.
Thermal Derating and Ambient Heat — What 70 °C Means on a Mill Floor
Rated 50 A all the way from 40 °C to 50 °C ambient, then it starts to pull back: 49 A at 55 °C, 48 A at 60 °C, 46 A at 65 °C, and 45 A at 70 °C. For a hot-strip mill panel sitting near the runout table or furnace zone, that 70 °C ceiling with only 10 % derating (45 A vs 50 A) means this MCCB holds its strip without nuisance tripping when the ambient climbs.
Measures 76.2 mm wide (3 in), 130 mm tall (5.12 in), and 70 mm deep (2.76 in). That 76.2 mm width is the standard 3-pole MCCB footprint for a 500 A frame — drops into the same DIN-rail or panel-mount cutout as other SENTRON 3VA frame breakers.