The breaking capacity reaches 187 kA at 240 V AC and 121 kA at 415 V AC, with a rated insulation voltage of 800 V — figures that govern its fault-interruption capability across common distribution voltages. That configuration suits applications where remote status indication and undervoltage protection are required on the same breaker.
Current Ratings and Thermal Derating
Above that, the continuous current derates linearly: 960 A at 55 °C, 940 A at 60 °C, 920 A at 65 °C, and 900 A at 70 °C.
Breaking Capacity by System Voltage
The interrupting rating varies with system voltage: 187 kA at 240 V, 121 kA at 415 V and 440 V, 75.6 kA at 500 V, and 52.5 kA at 690 V.
Physical Dimensions and Panel Fit
The breaker measures 120 mm deep, 210 mm wide, and 320 mm high. The 210 mm width across three poles is standard for this frame class; verify the mounting footprint against the existing bus or backplate before committing the BOM line.