The Siemens SENTRON 3VA1040-3ED36-0AD0 is a 3-pole molded case circuit breaker rated 40 A continuous current (Iu) at 40 °C, carrying the full 40 A through 50 °C before derating begins — at 55 °C it delivers 38.4 A, at 70 °C it still holds 36 A. Interrupting capacity runs 75.6 kA at 240 V, 52.5 kA at 415 V, 32 kA at 440 V, and 7.5 kA at 690 V — numbers that place it in the high-breaking category for a 40 A frame, meaning it can clear faults up to those levels without upstream fuses in most industrial distribution panels. The breaker mounts in a standard SENTRON 3VA panel footprint — 70 mm deep, 76.2 mm wide (roughly 3 inches), 130 mm tall.
Current lifecycle — no LTB or EOL pending
Sourcing and fit considerations
It is a straight thermal-magnetic breaker for line protection. If your BOM calls for the same frame with a different release (electronic ETU or higher amp rating), this is not that variant. But for a fixed-trip 40 A feeder breaker in a SENTRON panel, this is the exact order code.