It carries a rated insulation voltage of 800 V and delivers a breaking capacity of 75.6 kA at 240 V, 52.5 kA at 415 V, and 32 kA at 440 V — numbers that tell you it handles high-fault-current scenarios common in industrial mains and sub-distribution.
Thermal performance and real-world current
At 55 °C it derates to 24 A, at 65 °C to 23 A, and at 70 °C to 23 A — still usable in warm enclosures. The maximum power loss is 8.5 W, which matters when calculating heat rise in a sealed panel.
Built-in accessories and wiring
The auxiliary switches give remote status for the breaker position (open/closed/tripped), and the shunt trip lets a control system or E-stop pushbutton force the breaker open. The basic switch assembly is order code 3VA11253EF320AA0 if you ever need the core mechanism alone.