Breaking capacity and trip range
Breaking capacity hits 330 kA at 240 V and 242 kA at 415/440 V, then drops to 187 kA at 500 V and 3.7 kA at 690 V. That 3.7 kA figure at 690 V is the hard limit — if your motor circuit runs at 690 V and the available fault current exceeds that, this breaker is not the right fit. The adjustable thermal-magnetic trip range spans 189 A minimum to 945 A maximum, which covers motor FLA from roughly 75 A to 380 A depending on the tap setting.
Starter protection and undervoltage release
The starter-protection design (design code 7MS32) integrates an undervoltage release (UVR) that drops the breaker if control voltage falls below the dropout threshold — standard for motor control centers where a voltage sag should trip the starter rather than let it re-accelerate uncontrolled. The UVR is factory-fitted; no field kit required. Two HQ auxiliary switches are included for status feedback to the PLC or HOA station.
Maximum power loss is 6.5 W, negligible for enclosure heat-load calculations.