400 A continuous, 4-pole — line protection with ETU320
The Siemens SENTRON 3VA2340-8HL42-0AA0 is a 4-pole molded case circuit breaker (MCCB) rated for 400 A continuous current at 40 °C, with an ETU320 electronic overcurrent release designed for line protection. The continuous rating holds at 400 A through 50 °C, then derates linearly to 340 A at 70 °C — per the datasheet, the full thermal curve matters when the breaker sits in a warm enclosure or next to other heat sources. Breaking capacity spans 440 kA at 240 V, 330 kA at 415 V and 440 V, 220 kA at 500 V, and 52.5 kA at 690 V, giving selectivity headroom for high-fault installations.
Panel fit — 184 mm wide, 110 mm deep, 248 mm tall
Mounts on a standard DIN rail or direct panel. The 184 mm width and 248 mm height define the cutout; 110 mm depth leaves clearance for rear-access wiring and busbar connections. IP40 on the front means tools and fingers stay out, but the enclosure interior must keep the breaker dry — no washdown exposure without an outer cabinet.
Lifecycle and sourcing
Listed as current production — no phase-out or last-time-buy notice on record. Sourced to order against an RFQ through independent distribution; availability and current pricing confirmed at quote time.