SENTRON 3VA2140-6JP32-0AA0 — 40 A MCCB with ETU550, Line Protection
The Siemens SENTRON 3VA2140-6JP32-0AA0 is a 3-pole molded case circuit breaker (MCCB) rated for 40 A continuous current, with an adjustable overload and short-circuit trip range from 60 A up to 480 A via the ETU550 electronic trip unit. It is designed for line protection in industrial distribution panels. Interrupting capacity is 242 kA at 240 V AC, 187 kA at 415 V and 440 V, 121 kA at 500 V, and 3.7 kA at 690 V — sufficient for high-fault-current main feeders or subfeeders where selectivity with downstream breakers is required. The ETU550 trip unit provides electronic overload protection with adjustable settings, plus a communication function for remote monitoring or integration into a power management system. The front face carries IP40 protection, suitable for enclosed panel mounting.
Thermal Performance and Panel Fit
Continuous current rating holds at 40 A across the full ambient temperature range from 40 °C to 70 °C — no derating needed up to that limit. Dimensions are 86 mm deep, 105 mm wide, 181 mm high (3.39 x 4.13 x 7.13 in), fitting standard Siemens SENTRON 3VA panel cutouts and busbar systems. Operating temperature range is -25 °C to 70 °C; storage range -40 °C to 80 °C. Maximum power loss is 1.6 W. No undervoltage release or ground-fault monitoring on this variant — those are separate accessory options.