Siemens SENTRON 3VA1032-4ED36-0DA0 — 32 A MCCB with TM210 Release
The Siemens SENTRON 3VA1032-4ED36-0DA0 is a 3-pole molded case circuit breaker (MCCB) rated for line protection, carrying a continuous current Iu of 32 A and a rated insulation voltage Ui of 800 V. It uses a TM210 thermal-magnetic overcurrent release and is fitted with an undervoltage release (UVR). This MCCB is part of the SENTRON family, designed for panel OEM integration on a DIN rail or mounting plate. The front face carries an IP40 protection class, meaning it is protected against tools and wires over 1 mm — standard for enclosed distribution boards. No auxiliary contact version is fitted, and there is no communication function, phase failure detection, or ground fault monitoring on this variant; it is a straight line-protection breaker with undervoltage release only.
Current Derating and Thermal Performance
The 32 A rating holds flat from 40 °C through 50 °C ambient. Above that, the thermal curve begins to derate: 30.72 A at 55 °C, 30.08 A at 60 °C, 29.44 A at 65 °C, and 28.8 A at 70 °C. For a panel OEM wireman packing breakers into a high-fill-factor enclosure, this means the 3VA1032-4ED36-0DA0 can carry its full 32 A in a 50 °C panel without derating — a common condition in sealed or sun-loaded cabinets. The operating temperature range is -25 °C to 70 °C, with storage from -40 °C to 80 °C.
Physical Dimensions and Panel Fit
The breaker measures 130 mm high, 76.2 mm wide, and 70 mm deep. The width of 76.2 mm is standard for a 3-pole MCCB in this class.