Breaking capacity — what the voltage-dependent ratings mean for panel coordination
The 3VA1132-3EF42-0AA0: Breaking capacity varies with system voltage: 75.6 kA at 240 V AC, 52.5 kA at 415 V, 32 kA at 440 V, and 11.9 kA at both 500 V and 690 V. For a 400 V three-phase panel, the 52.5 kA figure is the one that governs SCCR compliance — verify it exceeds the available fault current at the point of installation. The 11.9 kA at 690 V is the floor; this breaker is not a high-interrupting device for 690 V industrial networks.
Thermal derating and operating envelope
Rated current holds at 32 A from 40 °C through 50 °C ambient, then derates to 31 A at 55–60 °C and 30 A at 65–70 °C. The operating ambient range is -25 °C to +70 °C; storage range is -40 °C to +80 °C. Maximum power loss is 10.6 W — relevant for enclosure thermal calculations when grouping multiple breakers.
Physical fit and panel integration
Dimensions: 130 mm height, 101.6 mm width (4 in), 70 mm depth (2.76 in). Front-face protection is IP40 — suitable for dry indoor panel environments, not washdown areas. No undervoltage release, no communication module, no ground-fault monitoring on this variant; it is a straight thermal-magnetic line-protection breaker.