AQ 1000 Arc quenching device

AQ 1000 arc quenching device extinguishes arcing faults in systems with rated voltage of below 1000V within 3ms of arc initiation. The AQ 1000 Arc Quenching System is developed to limit the total arcing time to 3ms 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 to ground low-impedance parallel path for fault current to flow thus extinguishing the arc fault. The total arcing time is 3ms.
Watch video about arc quencing with AQ 1000


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  • Rated voltage: 690V
  • Short-circuit withstand: 50kA for 1 second, 75kA for 0.5 second, 100kA for 0.2 second
  • BIL: 12kV
  • Peak current: 220kA
  • Electric life: 2 operations
  • Mechanical life: 100 open/close cycles
  • Device closing time: <3ms*
  • Power supply: 80-265Vdc or 18-70Vdc
  • 4 binary inputs
  • 5 relay outputs
  • Self supervision