What this MCCB carries
The Siemens 3VA2440-7HL32-0BL0 is a SENTRON molded case circuit breaker rated for 400 A continuous at 40–70 °C — no derating needed across that band, which simplifies panel thermal budgeting. The adjustable thermal-magnetic trip covers 600–4800 A, so one breaker body handles a wide range of feeder or main protection settings. Interrupting capacity hits 330 kA at 240 V, 242 kA at 415/440 V, 187 kA at 500 V, and 9 kA at 690 V; at 690 V the rating drops sharply, so confirm the available fault current at that voltage before specifying.
Dimensions and panel fit
At 110 mm deep, 138 mm wide, and 248 mm tall, this 3-pole MCCB fits standard SENTRON mounting footprints. The 138 mm width matches the common 3-pole frame size, so it drops into existing busbar or cable connections without re-spacing. Depth of 110 mm leaves room for rear-connected busbars in a 200 mm deep enclosure.
Auxiliary and release configuration
Factory-fitted with two auxiliary switches, one trip alarm switch, and one electrical alarm switch (HQ), plus an undervoltage release (UVR). The basic switch is order code 3VA2440-7HL32-0AA0 — that's the switching mechanism this breaker is built on. No ground-fault monitoring or communication module on this variant.