SENTRON 3VA2340-5HL42-0JH0 — 400 A MCCB for Line Protection
The Siemens SENTRON 3VA2340-5HL42-0JH0 is a 4-pole molded case circuit breaker rated for 400 A continuous current, designed for line protection in distribution panels. Its interrupting capacity reaches 187 kA at 240 V and 121 kA at 415 V, giving selectivity headroom for high-fault installations like transformer secondaries or industrial mains. The breaker carries a shunt trip release (STL) and comes fitted with two auxiliary switches plus a separate trip alarm switch (HQ), so it can signal its state back to a PLC or annunciator panel without an add-on module.
Thermal Derating and Power Loss
Rated 400 A up to 50 °C ambient; above that the continuous current must be derated: 385 A at 55 °C, 370 A at 60 °C, 355 A at 65 °C, and 340 A at 70 °C. Maximum power loss is 96 W, which factors into enclosure ventilation planning.
Dimensions and Panel Fit
Footprint is 184 mm wide by 248 mm tall by 110 mm deep. The 4-pole body fits standard MCCB mounting patterns in SENTRON distribution boards or third-party enclosures with the appropriate cutout.
Lifecycle and Sourcing
Listed as current-production (active lifecycle stage). This is a standard catalog item in the SENTRON 3VA family, not a phase-out or last-time-buy line. Sourced and quoted to order against an RFQ through independent distribution; availability and current pricing confirmed at quote time.