It delivers a 187 kA interrupting capacity at 240 V, tapering to 121 kA at 415 V and 440 V, 75.6 kA at 500 V, and 3.7 kA at 690 V — covering the full low-voltage fault spectrum from residential to industrial mains.
At 415 V the 121 kA rating still exceeds most industrial switchboard SCCR requirements. The steep drop to 3.7 kA at 690 V is typical for a 63 A frame; if your system runs at 690 V, verify the available fault current stays under that threshold.
Thermal performance and operating range
Maximum power loss is 4 W, which keeps heat rise low in a crowded enclosure.