MCCB for line protection with ETU550 trip unit
The Siemens SENTRON 3VA2040-5JP32-0AA0 is a 3-pole molded case circuit breaker (MCCB) rated for 40 A continuous current across the full ambient range from 40 °C to 70 °C — no derating needed up to that ceiling. It's designed for line protection duty, meaning it sits on the feeder side of a distribution panel, not as a motor starter.
Breaking capacity across voltage levels
This MCCB delivers 187 kA at 240 V, 121 kA at 415 V and 440 V, 75.6 kA at 500 V, and 3 kA at 690 V.
Electrical ratings and insulation
Power loss is 2.2 W maximum — negligible for panel thermal calculations but worth noting if you're packing multiple breakers in a sealed enclosure. No undervoltage release or trip indicator is fitted on this variant, so if you need remote shunt-trip capability, confirm the accessory slot compatibility.