The RPS500-A3 is an external DC power supply unit that uses AC input and provides DC output for multiple switch and router models as a redundant

backup power supply system.

The RPS500-A3 supports cold backup of power supply commonly, which mean that the RPS500-A3 only switches to the DC output state when it detects a power supply failure of the powered device. When the powered device's own power supply system is functioning, the RPS unit only works in the monitoring mode, without feeding power to the powered device.

The output of the RPS500-A3 is controlled by a control pin. When the powered device's own power supply system becomes fails, a LOW signal is sent to the control pin of the RPS unit. Upon receiving this LOW signal, the RPS unit switches to the DC output state within 2 ms.

MSRP	$680.00
Our Price	$462.62
Availability as of 3:46am 11/21/2009	Shipped from Manufacturer. Allow approximately 2-3 weeks for delivery. Click to Verify Price and Stock
Condition	New and Factory Sealed
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