What this 32 A MCCB does for the panel
The Siemens SENTRON 3VA1032-3ED36-0KH0 is a 3-pole molded case circuit breaker rated at 32 A continuous current, built for line protection in distribution panels. It carries a TM210 thermal-magnetic release — the thermal element handles overloads, the magnetic element clears short circuits fast. The interrupting capacity hits 75.6 kA at 240 V, 52.5 kA at 415 V, 32 kA at 440 V, and 7.5 kA at 690 V, which means it can handle high-fault scenarios without needing an upstream fuse to back it up. That kind of SCCR headroom simplifies coordination studies for the site electrical engineer.
Footprint and integration
The 3VA1032-3ED36-0KH0 measures 70 mm deep, 76.2 mm wide, and 130 mm tall. That 76.2 mm width is a standard 3-pole MCCB footprint — slides into the same panel cutout as other SENTRON 3VA breakers. The front face carries IP40 protection, enough for a clean indoor panel but not for washdown zones. Auxiliary contacts come as 2 auxiliary switches plus 1 trip alarm switch (HQ version), giving the commissioning engineer a clean signal back to the PLC or SCADA without adding a separate aux block.
Temperature derating and real-world current
Rated 32 A continuous at 40 °C ambient, and it holds that 32 A all the way up to 50 °C. At 55 °C it derates to 30.72 A, at 60 °C to 30.08 A, at 65 °C to 29.44 A, and at 70 °C to 28.8 A. The operating temperature range is -25 °C to +70 °C; storage from -40 °C to +80 °C. If the panel sits near a hot motor drive or a sun-baked wall, the 50 °C headroom means no derating worry — the full 32 A is available.