AQ-1000 Arc quenching device – Low Voltage

The AQ-1000 arc quenching device extinguishes arcing faults in systems with rated voltage of below 690 V. The AQ-1000 arc quenching system is developed to limit the total arcing time to 5 ms and to minimize or even eliminate the arcing fault thermal and pressure damaging effects. In most applications this will result in a calorie/cm² energy release of less than 1. The AQ-1000 is fully reusable allowing for full system testing at site.

The AQ-1000 is utilized in conjunction with the AQ-100 arc protection system. In case of an arc fault the AQ-100 detects the fault, initiates the AQ-1000 arc quenching system and simultaneously trips the fault feeding circuit breaker(s). The AQ-1000 creates a three-phase low-impedance parallel path for fault current to flow thus extinguishing the arc fault. The total arcing time is less than 5 ms.

Watch a video about arc quencing with the AQ-1000:


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  • Rated voltage: up to 690 V
  • Short-circuit withstand (IEC 60947-9-1/UL278): 100 kA for 200 ms, 50 kA for 1 s
  • BIL: 12kV
  • Peak current: 220kA
  • Electric life: 2 operations at 100 kA, 200 ms each
  • Mechanical life: 100 operations
  • Total system operating time: 5 ms
  • Power supply: 80-265Vdc or 18-70Vdc
  • 4 binary inputs
  • 5 relay outputs
  • Self-supervision