SENTRON 3VA2140-8HK46-0AA0 — 40 A MCCB with ETU340, 4-Pole
The Siemens SENTRON 3VA2140-8HK46-0AA0 is a 4-pole molded case circuit breaker (MCCB) rated for line protection, carrying a continuous current Iu of 40 A flat across the full operating temperature range from -40 °C to 70 °C — no derating needed up to the maximum. The ETU340 electronic trip unit provides adjustable N-conductor protection (OFF or 100%) and a fixed long-time delay tr of 1300 ms. Breaking capacity reaches 440 kA at 240 V, 330 kA at 415 V and 440 V, 220 kA at 500 V, and 53 kA at 690 V, giving substantial SCCR headroom for most industrial distribution panels. Front-face protection is IP40.
Footprint is 140 mm wide × 181 mm high × 86 mm deep — a standard SENTRON 3VA frame size that fits existing 4-pole MCCB cutouts and DIN-rail or screw-mount panel layouts. Maximum power loss is 1.2 W, so ventilation requirements are minimal even in dense enclosures.