SENTRON 3VA2440-7HL32-0HC0 — 400 A MCCB with Adjustable Trip and Shunt Trip
The Siemens SENTRON 3VA2440-7HL32-0HC0 is a 3-pole molded case circuit breaker (MCCB) rated for 400 A continuous at ambient temperatures from 40 °C up to 70 °C — no derating needed across that band, which simplifies panel design in warm enclosures or near heat sources. The adjustable thermal-magnetic trip unit covers 600 A minimum to 4 800 A maximum, giving the specifying engineer flexibility to match the breaker to the actual load without swapping the frame. Breaking capacity is 330 kA at 240 V AC, 242 kA at 415 V and 440 V, 187 kA at 500 V, and 9 kA at 690 V — the high interrupt ratings at common distribution voltages make this a strong candidate for main or feeder protection in high-fault-current panels. The breaker ships with a shunt trip (STL) auxiliary release and two HQ auxiliary switches integrated, so remote tripping and status feedback are wired out of the box without separate add-on modules.
Dimensions and Panel Fit
Frame dimensions are 248 mm high, 138 mm wide, and 110 mm deep — a standard SENTRON 3VA2 form factor that fits existing switchboard cutouts and bus-bar centers for this class of MCCB. The 3VA2 platform uses a common footprint across the current range, so a panel designed for a lower-rated 3VA2 can accept this 400 A unit without re-drilling the mounting plate or re-spacing the bus bars.
Lifecycle and Sourcing
The base switch variant is 3VA2440-7HL32-0AA0; the -0HC0 suffix adds the shunt trip and dual auxiliary switches as factory-integrated options.