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The DPS-500A redundant power supply (RPS) are designed to conform to the wattage requirements of D-Link’s Ethernet and Gigabit switches. It is an external RPS unit enclosed in solid metal cases with sockets to connect to an AC power sources on one end and to connect to a switch’s internal power supply on the other end. It provides a low-cost, simple solution to the problem of an inadvertent failure of the internal power-supply of an Ethernet switch, which can result in the shutdown of that switch, the devices attached to its ports or an entire network. Supporting full output power for the switch, these redundant power supplies can maximise the power availability of the switching device.
Redundant Power Backup
Each D-Link RPS is equipped with an integrated detection circuit that continuously monitors the switch’s internal power supply. In the event of a power interruption, the redundant power supply is immediately triggered so that the LAN switch and its connected devices can continue providing service.
This results in a more reliable network infrastructure and protects the network from going down due to failure of a single network device power supply.
Easy and Flexible Deployment
Deployment of a DPS series device does not require any change in the configuration of the LAN switch. Each RPS is equipped with a universal internal power supply  and can be connected to any AC power source from 90 V AC to 264 V AC, 47 Hz to 63 Hz through a standard AC power cable.
Modular Redundant Power Supplies
The DPS-500A is a modular redundant power supply which can be installed as independent power supply units or placed inside a DPS-800 Rack-mount chassis. The chassis are designed for mounting in a standard 19-inch equipment rack. Multiple power supplies can be placed inside a chassis, from which they can connect to the switches mounted in the same rack.
Rack-Mount Chassis
The DPS-800 chassis can accommodate up to two DPS-200A modules to an equipment rack. Using a chassis, users can save space while allowing for clean cabling. All redundant power supply units installed in the chassis connect directly to their power sources, and they are hot-swappable.

Redundant Power Protection
Connect to a variety of D-Link Gigabit switches
Provide backup power for switch’s built-in power supply
Over-current protection
LED status indicators
Flexible Deployment Options
Can be installed as stand-alone power supply units or mounted in a 19-inch multi-slot chassis
Hot swappable when installed in a chassis
Solid metal case housing
Compatible Products
DGS-3000-28LP1
DGS-3000-28X1
DGS-3000-28XMP1
DGS-3000-52X1
DGS-3120-48TC
DGS-3420-28TC
DGS-3420-28SC
DGS-3420-52T
DGS-3620-28TC
DGS-3620-28SC
DGS-3620-52T
DGS-3630-28SC
DGS-3630-28TC
DGS-3630-52TC
1 Requires a DPS-CB150-2PS to connect with the DGS-3000 Series. DPS-CB150-2PS available by special request.



Technical Specifications
Physical
Dimensions
172 x 257 x 43 mm (6.8 x 10.1 x 1.7 inches)
Panel size: 196 x 52 mm (7.7 x 2.04 inches)
Weight
1.51 kg
Input Voltage Range
90 to 264 V AC
Input Frequency
47 to 63 Hz
Max Input Current
1A at 240 V AC
Max Inrush Current
60 A at 230 V AC
Efficiency
75 %
Operating Temperature
0 to 50 °C (32 to 122 °F)
Storage Temperature
-45 to 85 °C (-49 to 185 °F)
Operating Humidity
10 to 90% RH
Storage Humidity
10 to 95% RH
MTBF
400,000 hours