Sensors & Transducers


Safe to open the panel?

April 2010 Sensors & Transducers

The UPA Power Alerts reduces the risk of electrical arc flash by pre-verifying the electrical isolation from outside a control panel. Hardwired to the circuit breaker or main disconnect, the UPA LEDs’ flash to indicate the presence of hazardous conditions (40-750 VAC and 30-1000 VDC) associated with stored energy.

Engineered with redundant circuitry, the Power Alert is powered by the same voltage that it indicates. Available in two sizes, the easy to install UPAs’ fit through standard pushbutton and conduit knockouts.



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