The adjustable thermal-magnetic trip covers 600 A minimum to 3000 A maximum, so this breaker can be set to protect a wide range of downstream motor or feeder sizes from a single frame.
At 240 V the interrupting rating is 330 kA; at 415 V and 440 V it holds at 242 kA; at 500 V it drops to 187 kA; at 690 V it falls to 5.2 kA. For standard 480 V or 400 V distribution, the 187–242 kA range covers nearly any industrial installation.
Built-in auxiliary and release package
Comes factory-fitted with two auxiliary switches, one trip alarm switch, one electrical alarm switch, and an undervoltage release (UVR). The UVR means the breaker will trip if control voltage drops — common for emergency-stop chains or undervoltage protection schemes.
