Siemens 3VA1040-2ED32-0AC0 — SENTRON 40 A MCCB with TM210 Release
The Siemens 3VA1040-2ED32-0AC0 is a SENTRON molded case circuit breaker (MCCB) rated for 40 A continuous current (Iu) at 40 °C ambient, with a 3-pole configuration and a TM210 thermal-magnetic overcurrent release.
The interrupting ratings span the common industrial voltages: 52.5 kA at 240 V, 32 kA at 415 V, 13.6 kA at 440 V, and 7.5 kA at 690 V. For a 480 V panel (common in North America), the 13.6 kA at 440 V figure is the closest published value — expect the actual 480 V rating to be slightly lower, so verify against the available fault current at the point of installation. The 690 V rating confirms it handles European 400/690 V distribution.
Above that, derating begins: 38.4 A at 55 °C, 37.6 A at 60 °C, 36.8 A at 65 °C, and 36 A at 70 °C. For a panel that runs warm — say a sealed enclosure near a process line — the 70 °C figure is the ceiling; the breaker still delivers 36 A, which is 90% of its nameplate. Front IP40 protection means it's splash-resistant from the front but not sealed for washdown environments.
Physical Fit and Auxiliary Contacts
Dimensions are 130 mm height, 76.2 mm width, 70 mm depth — a standard 3-pole MCCB footprint for DIN-rail or panel-mount integration. The auxiliary contact version is 2 auxiliary switches HQ (high-qualified), meaning two form-C (changeover) contacts rated for signal-level switching. No trip indicator is fitted, so fault diagnostics rely on the auxiliary contact state or a downstream indication circuit.