D-Link DPS-500A | Modular Redundant Power Supplies

The D-Link DPS-500A is a modular redundant power supply that plays a crucial role in maintaining the uptime of network devices, particularly Ethernet switches. It is designed to be installed either as an independent unit or within the DPS-800 rack-mount chassis, which can accommodate up to two DPS-500A modules. This flexibility allows for efficient use of space in equipment racks while ensuring that power supplies are easily accessible for maintenance and upgrades.

In terms of specifications, the DPS-500A delivers a maximum output power of 140 watts, making it suitable for a variety of network applications. It operates within an input voltage range of 90 to 264 V AC and supports an input frequency of 47 to 63 Hz. The power supply has a maximum input current of 1A at 240 V AC and features a maximum inrush current of 60 A at 230 V AC. Efficiency is rated at 75%, which is a critical factor for energy conservation and cost savings in larger network environments.

The DPS-500A is equipped with an integrated detection circuit that continuously monitors the internal power supply of the connected switch. In the event of a power interruption, the DPS-500A is triggered to provide backup power immediately, ensuring that the switch and its connected devices continue to operate without disruption. This feature is essential for maintaining a reliable network infrastructure, as it protects against the potential downtime that can result from a single point of failure. Additionally, the unit is designed to operate in a wide temperature range of 0 to 50 °C (32 to 122 °F) and can withstand storage temperatures from -45 to 85 °C (-49 to 185 °F). With a mean time between failures (MTBF) of 400,000 hours, the DPS-500A is built for durability and long-term performance