Siemens 3VA2140-5MN32-0AA0 3VA2 3P 40A 55kA 415V ETU350M LSI Molded Case Circuit Breaker

The Siemens 3VA2140-5MN32-0AA0 is a three-pole molded case circuit breaker (MCCB) from the SENTRON 3VA2 series, rated 40 A with a breaking capacity of 55 kA (Icu) at 415 V AC (utilisation class E). It is equipped with the ETU350M LSI electronic trip unit providing overload (L), short-time delay (S) and instantaneous (I) protection. Rated for distribution and motor-feeder protection in low-voltage switchgear up to 690 V AC.

Technical Specifications

Certifications & Standards

• IEC 60947-2

Applications & Use Cases

At 40 A rated current and 55 kA breaking capacity, the 3VA2140-5MN32-0AA0 is dimensioned for feeder, sub-distribution and motor-circuit protection in low-voltage main and sub-distribution boards. The ETU350M LSI trip unit offers adjustable overload and short-circuit settings for selectivity coordination with upstream and downstream devices.

The IEC Frame 160 enclosure supports fixed mounting in form-separated switchgear (form 2–4) and accepts a range of Siemens 3VA accessories — auxiliary and alarm switches, shunt and undervoltage releases, rotary and motor operators — for adaptation to the specific installation and control scheme.