Breaking capacity sits at 75.6 kA at 240 V AC and still delivers 52.5 kA at 415 V, so it handles high-fault utility feeds without cascading upstream.
Derating and thermal management — no up-tower surprises
At 55 °C it derates to 31 A, at 65 °C to 30 A, and holds 30 A through 70 °C (–). That derating curve matters when you're packing breakers into a poorly ventilated enclosure or a nacelle cabinet that sees internal temps near 60 °C in summer — you don't lose a full pole's worth of capacity. Power dissipation maxes at 10.6 W, which is modest for a 32 A MCCB; keep that in mind for thermal calculations in sealed stainless steel boxes on offshore platforms.
The 3VA1132-3GD46-0AA0 measures 70 mm deep, 101.6 mm wide, and 130 mm tall (–). That 101.6 mm width is exactly 4 inches — standard for a 4-pole MCCB in the SENTRON 3VA frame. The IP40 front protection means it's sealed against tools and wires touching live parts from the front, but the sides and back are open for heat dissipation — standard for panel-mounted MCCBs. Verify gland-plate clearance: 70 mm depth leaves room behind a 200 mm deep enclosure door.