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Voltage indicators warn of hazardous voltage, but cannot be used to confirm if equipment is de-energized. Absence

of voltage testers are permanently-mounted test devices designed to verify that a circuit is de-energized prior to

opening an electrical enclosure containing electrical conductors and circuit parts.

More than a Voltage Indicator

Absence of Voltage Testers are Fail-Safe and Reliable

• Test each phase conductor or circuit part phase-to-phase and phase-to-ground for absence of voltage

• Built-in test circuit verifies operation on a known voltage source before and after absence of voltage test

• Verifies installation of hardwired test leads before and after absence of voltage test

• Functional safety principles ensure hardware and firmware are designed to prevent and control dangerous

failures of safety functions

• Installed device ensures tester is rated for the application and is less susceptible to damage than

portable testers

• Automated test sequence helps reduces operator errors

RED indicators illuminate

when hazardous AC voltage

is present.

Upstream Power: ON

When voltage is not detected,

indicators are not illuminated.

This does not guarantee the

absence of voltage.

Upstream Power: OFF

Pressing the "TEST" button initiates

the voltage test, indicated by the

flashing YELLOW caution indicator.

Upstream Power: OFF

GREEN indicator illuminates

only when the absence of

voltage has been verified.

Upstream Power: OFF