SENTRON 3VA1032-3ED36-0HC0 — 32 A MCCB with TM210 Release
The Siemens SENTRON 3VA1032-3ED36-0HC0 is a 3-pole molded case circuit breaker (MCCB) rated for 32 A continuous current at 40 °C, with a TM210 thermal-magnetic release. It carries a 75.6 kA interrupting capacity at 240 V, stepping down to 52.5 kA at 415 V and 32 kA at 440 V — sufficient for most distribution panel fault levels downstream of a transformer. The 800 V rated insulation voltage (Ui) and the IP40 front protection suit it for installation in a standard switchgear enclosure with a gland plate above. This MCCB is configured for line protection (not motor or generator duty) and includes a factory-integrated shunt trip (STL) release for remote tripping. The auxiliary contact block carries 2 HQ (high-availability) switches, useful for signaling breaker status back to a PLC or SCADA. The mechanical endurance is rated at 15,000 operations, typical for a panel feeder application where it cycles a few times a year for maintenance isolation.
Thermal Derating and Ambient Temperature
The 32 A rating holds flat from 40 °C through 50 °C, then derates linearly: 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. If the panel ambient runs above 50 °C — say a sealed enclosure near a furnace line — size the load side for the derated figure, not the nameplate 32 A. The operating temperature range spans -25 °C to 70 °C; storage limits are -40 °C to 80 °C.
Dimensions and Panel Fit
The breaker measures 130 mm high, 76.2 mm wide (3-module footprint on a 25 mm grid), and 70 mm deep. The 70 mm depth is the body only — add clearance for the rear terminals and the shunt trip wiring. It fits a standard DIN-rail or screw-mounted panel backplate. The IP40 front means no gasketed door seal; the panel door must provide its own environmental protection if washdown is required.