What this 3VA2440-5HN32-0DH0 is and what it does
The SENTRON 3VA2440-5HN32-0DH0 is a 3-pole molded case circuit breaker (MCCB) rated for line protection, designed to interrupt fault currents up to 187 kA at 240 VAC. It carries a continuous current of 400 A across the full ambient range from 40 °C to 70 °C — no derating needed within that window. The 187 kA interrupting rating at 240 V means this breaker can safely clear a high-energy fault without rupturing or cascading upstream — critical for service-entrance or large-feeder applications where available fault current is high.
Breaking capacity across voltage levels
At 415 V and 440 V the breaking capacity is 121 kA; at 500 V it drops to 75.6 kA, and at 690 V it is 9 kA. The 9 kA at 690 V is a sharp reduction — if your system runs at 690 V, verify the available fault current stays under that limit.
Lifecycle and sourcing posture
The lifecycle stage is listed as current — meaning the manufacturer still produces this order code. No successor has been announced. The part is sourced and quoted to order against an RFQ through independent distribution; availability and current pricing are confirmed at quote time.
Panel integration and dimensions
The breaker measures 138 mm wide, 248 mm high, and 110 mm deep — a standard footprint for a 400 A frame. It mounts on a DIN rail or directly to a backplate; the 110 mm depth leaves clearance for rear-connected busbars or cable lugs.
Built-in auxiliary and release options
This variant includes an undervoltage release (UVR) and a configuration of 2 auxiliary switches plus 1 trip alarm switch. The trip indicator provides local visual confirmation of a fault trip.