Breaking capacity is 187 kA at 240 V, 121 kA at 415 V, 30 kA at 440 V, and 17 kA at 690 V — the 240 V and 415 V figures cover the most common low-voltage distribution and motor branch-circuit fault levels, while the 690 V rating confirms suitability for 690 V line-to-line systems where available fault current stays under 17 kA.
Thermal performance and derating
Derating begins at 55 °C (192 A), dropping to 188 A at 60 °C, 184 A at 65 °C, and 180 A at 70 °C — the 70 °C figure matches the maximum operating ambient, so the derating curve covers the full temperature range a panel might see near a heat source or in a sealed enclosure.
Motor duty and endurance
Operating power at AC-3 duty (motor switching) at 400 V is 75 W — this is the power dissipated by the breaker under load, relevant for enclosure thermal calculations.
Physical footprint and mounting
Dimensions are 105 mm width, 158 mm height, and 70 mm depth.
The integrated auxiliary trip is specified as order code 3VA9608-0BB25 — that sub-assembly is the undervoltage release module that mates with this breaker. No auxiliary contact version is included as standard.