The 75.6 kA interrupting rating at 240 V means it can safely break a fault current up to that level without welding contacts or cascading failure upstream — critical for high-capacity panels. At 415 V it still handles 52.5 kA, and at 440 V it drops to 32 kA, so verify the available fault current at your system voltage. The 40 A rating holds flat from 40 °C to 50 °C; above that it derates gradually to 36 A at 70 °C. That thermal stability makes it a solid choice for enclosures with moderate heat rise — no need to oversize for a warm panel. Dimensions are 130 mm high, 76.2 mm wide, 70 mm deep — fits standard MCCB mounting footprints on DIN rail or backplate.
Mounting and integration notes
Mounts on DIN rail or backplate; the 76.2 mm width matches the standard 3-pole MCCB footprint — no panel rework needed if swapping from another SENTRON 3VA three-pole.