SENTRON 3VA4140-6ED24-0AA0 — 40 A MCCB with 100 kA interrupting capacity
The Siemens SENTRON 3VA4140-6ED24-0AA0 is a 2-pole molded-case circuit breaker (MCCB) rated for 40 A continuous at 40 °C ambient, with a TM210 thermal-magnetic release. The TM210 release combines a thermal bimetal for overload protection and a magnetic coil for short-circuit response. The 40 A rating at 40 °C derates to 37 A at 60 °C and 36 A at 70 °C — a consideration for enclosed panels with limited airflow. The 2-pole form factor fits single-phase or two-leg three-phase circuits where a neutral is not switched.
Interrupting capacity and selectivity planning
At 480 VAC the 65 kA interrupting rating gives headroom for most industrial secondary-distribution panels. For 600Y/347 V systems the rating drops to 25 kA — still adequate for many lighting and small-power panels, but verify against the utility transformer size. These ratings let the breaker be used as a main or branch device without cascading upstream fuses in most standard installations.
Panel integration — dimensions and mounting
The 3VA4140-6ED24-0AA0 measures 50.8 mm wide, 129.4 mm tall, and 75.1 mm deep. The 2-inch width fits standard 2-pole MCCB panel slots.
The SENTRON series carries UL file HEAB, confirming UL 489 listing for molded-case circuit breakers. The product designation matches the UL standard for branch-circuit protection. CE marking covers the European low-voltage directive. RoHS and REACH compliance documentation is available through the standard Siemens support channel — request it with the RFQ to keep your compliance file complete.