The Siemens SENTRON 3VA1132-5ED32-0AA0 is a 3-pole molded case circuit breaker (MCCB) rated 32 A at 40 °C, built for line protection in distribution panels. Its TM210 thermal-magnetic overcurrent release handles overloads and short-circuits without external electronics — no trip indicator, no undervoltage release, no communication module. That keeps the bill of materials simple and the failure mode predictable.
Breaking capacity and selectivity headroom
At 240 V AC this MCCB interrupts 187 kA — a figure that covers virtually any fault downstream of a large transformer or generator. At 415 V it still holds 121 kA, and at 440 V it drops to 75.6 kA. At 500 V and 690 V the rating settles at 17 kA. For a 32 A frame those numbers are high, which means the breaker can be used as a main or feeder device in high-fault installations without cascading upstream. The 800 V rated insulation voltage confirms the internal clearance is sized for 690 V systems.
Thermal derating and panel integration
Current rating holds at 32 A from 40 °C through 50 °C, then drops to 31 A at 55 °C and 60 °C, and to 30 A at 65 °C and 70 °C. If the panel ambient runs above 50 °C, size the load at 30 A or provide forced ventilation. The front face carries IP40 protection — fine for a clean indoor enclosure, but not for washdown or dusty environments. Dimensions are 70 mm deep, 76.2 mm wide, 130 mm tall, fitting a standard 3-pole MCCB footprint on a DIN rail or mounting plate. Maximum power loss is 10.6 W, so thermal rise inside a small enclosure is manageable.