The Siemens SENTRON 3VA1050-3ED32-0AA0 is a 3-pole molded case circuit breaker rated 50 A at 40 °C, with a TM210 thermal-magnetic release. It is designed for line protection in distribution panels and switchgear assemblies.
Interrupting capacity and voltage ratings
Interrupting capacity varies with system voltage: 75.6 kA at 240 V, 52.5 kA at 415 V, 32 kA at 440 V, and 7.5 kA at both 500 V and 690 V. The rated insulation voltage is 800 V, so the breaker is suitable for 480Y/277 V and 600 V delta systems common in North American and IEC panels.
Thermal-magnetic release and derating
The TM210 release provides fixed thermal and magnetic trip settings. The breaker holds full 50 A up to 50 °C ambient; above that it derates linearly to 45 A at 70 °C. That matters when the breaker is packed into a warm enclosure — plan for the actual ambient, not the nameplate.
Dimensions and panel fit
At 70 mm deep, 76.2 mm wide, and 130 mm tall, this MCCB fits standard 3-pole breaker slots in SENTRON and third-party distribution panels. No undervoltage release, no communication module, no ground-fault monitoring — it is a straight thermal-magnetic line protection device with IP40 front protection.