This document describes the features and characteristics of D-Link's High Availability Modular Redundant Power Supply Units (RPSU), including modular design, flexible 1 to 1 sparing options, and immediate fail-over in the event of a mechanical power supply failure.
The DPS-500 is a 140‑Watt redundant power supply unit (RPSU) designed for D‑Link enterprise switches. It offers modular 1‑to‑1 sparing, front‑panel LEDs, and supports a single device per unit, with the option to install up to two units in a 2‑slot chassis.
Technical specifications include input voltage range of 100 VAC to 240 VAC, efficiency of 75 % at max load, hold‑up time of 16 ms, and output of +12 V with load currents up to 4.0 A (115 VAC) or 2.0 A (230 VAC). The unit operates between 0 °C and 40 °C, stores from –25 °C to 55 °C, and is covered by a limited 1‑year warranty.
| Power Rating | 140 Watt |
|---|---|
| Hold Up Time | 16 ms at Max Load and 115 VAC Input at 60 Hz |
| Efficiency | 75 % Min. at Max Load and 115 VAC Input |
| Input Voltage Range | 100 VAC to 240 VAC |
| Input Frequency | 50 Hz to 63 Hz |
| Max Input Current (DPS‑500) | 30 A @ 115 VAC, 60 A @ 230 VAC |
| Max Load Current | 4.0 A @ 115 VAC, 2.0 A @ 230 VAC |
| Dimensions (RPSU) | 6.69 × 7.48 × 1.77 inches |
| Weight (RPSU) | 2.0 lb (without chassis) |
| Operating Temperature | 0 °C to 40 °C (32 °F to 104 °F) |
| Storage Temperature | -25 °C to 55 °C (-13 °F to 131 °F) |
| Warranty | Limited 1‑year warranty |
The DPS‑500 is a 140‑Watt redundant power supply unit.
It accepts an AC input voltage from 100 VAC to 240 VAC.
The chassis supports up to two RPSU units.
Power supplies and fans are covered by a limited one‑year warranty.