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Rectangular black metal power supply unit with ventilation slots and rear IEC power connector

D-Link

D-Link DPS-500A 140W Redundant Power Supply

SKU CH-3MZV-DVQ7Q MPN DPS-500A

A 140W redundant power supply for compatible D-Link Fast Ethernet and Gigabit switches, accepting 90 to 264V AC input at 75% efficiency

  • Product typePower Supply
  • DetailsInput Voltage Range: 90 to 264 V AC Input Frequency: 47 to 6
  • Provides backup power to keep switches running during internal PSU failure
  • Delivers 140 watts output matching D-Link Fast Ethernet and Gigabit switch requirements
  • Universal 90 to 264V AC input supports global voltage standards
  • 75% efficiency reduces energy waste and operating heat
  • Compatible with DGS-3450, DGS-3120-48TC, DGS-3420, DGS-3620 series switches

Redundant Power for D-Link Switches

The DPS-500A is a 140 W redundant power supply built to match the wattage requirements of specific D-Link Fast Ethernet and Gigabit switches. It protects network uptime by taking over if the switch's internal power supply fails. Network administrators responsible for those compatible models use it to avoid a complete device or network shutdown.

Continuous Operation at Full Output

The unit delivers its rated 140 W continuously to the connected switch, maintaining full output power during a primary supply failure. Efficiency is rated at 75 percent across the universal input range of 90 to 264 V AC at 47 to 63 Hz. Maximum input current is 2 A at 100 V AC or 1 A at 240 V AC, with inrush currents of 30 A at 115 V AC and 60 A at 230 V AC.

Hot-Swap Ready Internal Module

The supply uses a universal internal design that slides into the dedicated redundant power supply bay on supported D-Link switches including the DGS-3120-48TC, DGS-3420-28TC, DGS-3420-28SC, DGS-3420-52T, DGS-3450, DGS-3620-28TC, DGS-3620-28SC and DGS-3620-52T. It operates in storage humidity from 10 to 95 percent RH. It is not suitable for switches outside this compatibility list or for non-D-Link hardware.

How it compares

Measured against everything we stock in Patch Panels, PoE & LAN Adapters, at today’s prices. Recalculated every night.

Price $203.99
Pricier than about 78% of the 559 comparable items (median $56.99).

Specifications

Product
Brand nameD-Link
Model nameDPS-500A
Product typePower Supply
Size & build
Shipping weight2.59 kg
Package size432 × 254 × 191 mm

Questions about this item

How much heat does the 140 W DPS-500A produce when running 24/7 at 75 % efficiency?

At 75 % efficiency the unit draws up to 2 A at 100 V AC or 1 A at 240 V AC, so a measurable portion of the input power becomes heat during continuous operation.

Which D-Link switches must I already own for this redundant supply to connect and function?

The DPS-500A is compatible with DGS-3450, DGS-3120-48TC, DGS-3420-28TC, DGS-3420-28SC, DGS-3420-52T, DGS-3620-28TC, DGS-3620-28SC and DGS-3620-52T models.

Will the DPS-500A work alongside an older DGS-3120-48TC that I plan to keep in the rack?

Yes, the DGS-3120-48TC is listed among the supported switches, so the redundant supply can back up that unit directly.

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