The Siemens SENTRON 3VA1140-6GD46-0AA0 is a 4-pole molded case circuit breaker rated at 40 A continuous, designed for line protection. It carries a TM210 thermal-magnetic overcurrent release. Breaking capacity is the headline here: 220 kA at 240 V AC, 154 kA at 415 V, 121 kA at 440 V, and still 17 kA at 690 V. That 220 kA figure at 240 V means this breaker can safely interrupt a fault current of that magnitude without welding contacts or venting plasma — critical for high-fault locations like transformer secondaries or large motor control centers where the available short-circuit current is substantial. Thermal derating is minimal through 50 °C — still rated 40 A — then drops only 1 A per 5 °C step to 37 A at 70 °C. That means in a warm panel (say 55 °C ambient), you still get 39 A continuous, so no need to oversize for typical enclosure heat rise. Power loss at full load is 10.8 W, manageable for DIN-rail grouping.
Dimensions and panel fit
At 70 mm deep, 101.6 mm wide, and 130 mm tall, this breaker fits the standard SENTRON 3VA footprint. The 101.6 mm width (4 inches) is the critical dimension for multi-pole grouping in a distribution board — four poles at that width means it occupies a 4-module slot in a Siemens panelboard or a standard DIN-rail enclosure with appropriate busbar spacing. Front face carries IP40 protection — suitable for general indoor panel use where tools or fingers won't contact live parts. No undervoltage release, no shunt trip, no communication module on this variant; it's a straight thermal-magnetic breaker for hardwired distribution.
Lifecycle and sourcing
Lifecycle status is current production. This is an active catalog item in the SENTRON 3VA series.