Breaking capacity reaches 187 kA at 240 V, 121 kA at 415 V and 440 V, 79 kA at 500 V, and 3.4 kA at 690 V — these figures define the maximum fault current the breaker can safely interrupt at each voltage level, critical for panel SCCR coordination. This thermal curve governs the real-world ampacity in a warm enclosure — the 100 A nameplate applies only when the panel stays below 50 °C.
Auxiliary and communication features
The integrated auxiliary trip is order code 3VA9688-0BL33. Maximum power loss is 13.5 W, which factors into enclosure thermal calculations when multiple breakers are ganged.