Siemens 3VA2440-6HL32-0AF0 — SENTRON MCCB, 400 A, 3-Pole
The Siemens 3VA2440-6HL32-0AF0 is a SENTRON molded case circuit breaker (MCCB) for line protection, rated at 400 A continuous with a 4800 A maximum frame size. It is a 3-pole unit designed for distribution and industrial feeder applications where high interrupting capacity is needed. Interrupting capacity is 242 kA at 240 V, 187 kA at 415 V and 440 V, 121 kA at 500 V, and 9 kA at 690 V — covering most low-voltage distribution scenarios with substantial fault-current headroom. The breaker carries its full 400 A rating across the ambient temperature range from 40 °C through 70 °C, so no derating is needed in a warm panel or enclosure.
Lifecycle and Sourcing
The basic switch version is 3VA2440-6HL32-0AA0. The unit ships with one auxiliary switch and one trip alarm switch (HQ type), and no undervoltage release, auxiliary release, or ground-fault monitoring.
Physical Fit and Integration
Dimensions are 248 mm high, 138 mm wide, and 110 mm deep — a standard MCCB footprint for panel mounting. The 3-pole design fits into existing SENTRON switchboard or distribution panel layouts. Maximum power loss is 63.5 W, which should be factored into enclosure thermal calculations. Operating temperature range is -25 °C to 70 °C; storage range is -40 °C to 80 °C.
Coordination and Selectivity
With a 4800 A frame and adjustable trip unit (minimum 600 A), this MCCB supports selective coordination with downstream breakers in a distribution hierarchy. The trip indicator aids troubleshooting during commissioning or fault events. No communication function or voltage trigger is included — this is a straightforward thermal-magnetic or electronic-trip line protection device without integrated metering or remote trip capability.