It carries an undervoltage release and phase failure detection, so it drops the motor offline if a phase is lost or the control voltage dips — a standard requirement for pump and conveyor protection in industrial panels.
Breaking capacity — what it means for your fault level
This breaker interrupts 187 kA at 240 V, 121 kA at 415 V and 440 V, 75.6 kA at 500 V, and 9 kA at 690 V. The 187 kA figure at 240 V is high enough for most low-voltage transformer secondaries; the 9 kA at 690 V still covers typical motor-starting faults on 690 V systems.
The breaker measures 110 mm deep, 138 mm wide, and 248 mm high. The 110 mm depth leaves room for rear-connected busbars or cable lugs in a typical 600 mm deep enclosure.
Protection features and auxiliaries
No auxiliary switch is fitted as standard; if you need remote status feedback, you will add an auxiliary switch block separately. The base switch is 3VA2440-5MN32-0AA0.