Siemens SENTRON 3VA2140-7JP42-0AA0 — 40 A MCCB with ETU550
The Siemens SENTRON 3VA2140-7JP42-0AA0 is a 4-pole molded case circuit breaker (MCCB) rated for 40 A continuous current, designed for line protection in industrial power distribution panels. It carries an ETU550 electronic trip unit, adjustable from 60 A to 480 A — so the 40 A frame can be wired for a downstream load up to 480 A by swapping the trip rating, though the continuous rating on this specific variant is 40 A. Breaking capacity is 330 kA at 240 V AC, 242 kA at 415 V and 440 V, 187 kA at 500 V, and 3.7 kA at 690 V — the 690 V figure is low, so this breaker is best applied on 240–500 V systems where its SCCR headroom is substantial.
Integration and Mounting
Dimensions are 86 mm deep, 140 mm wide, 181 mm high — a standard 4-pole MCCB footprint that fits Siemens SENTRON mounting plates and DIN-rail adapters. Front face carries IP40 protection, suitable for enclosed panel mounting where tools or fingers won't contact live parts through the front. The breaker includes a communication function for remote monitoring and trip indication without a separate voltage trigger.