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• AC & DC interrupter circuits are electrically isolated from rectifier power. 

• Housed in a polycarbonate waterproof enclosure for outdoor use.

• Continuous synchronization with GPS. 

• High accuracy internal real-time clock maintains interruption in the event of loss of satellite signal. 

• Multiple fixed program setup ensures foolproof operation and minimal setup time. 

• Interrupt D.C. up to 50 Amps at 100 Volts. 

• Interrupt A.C. up to 15 Amps at 240 Volts.

The amount of current that is discharged off the validation coupon is typically very small and measurement tools require micro amp resolution. Conventional ammeters are inadequate for reading small currents since the loading effect of the meter adds an error value to the reading. The ZRA overcomes this loading effect and provides an extremely precise and accurate indication of protective current.