Switching power supply 48V 3A 5.5 mm input/output — No name

Switching power supply providing 48 V DC at up to 3 A with a 5.5 mm connector. Designed to deliver a stable 48V DC output for network and telecommunications equipment, this compact unit uses a switching regulator topology to balance efficiency and size. It is intended for continuous operation and can be mounted on a rack, desk or wall to power PoE injectors, routers and other devices that require a regulated 48 V supply.

Advantages

The switching regulator design offers higher efficiency and lower heat generation compared with linear supplies, while the compact form factor makes the unit suitable for constrained installations. A fixed 48 V DC output with up to 3 A current capacity supports a range of network devices and PoE equipment. The standard 5.5 mm barrel connector provides a common mechanical and electrical interface for many networking power inputs.

Suitable for

• Powering PoE injectors and midspan devices
• Providing 48 V supply to routers, switches and access points
• Supplying telecommunications and network equipment in small server rooms
• Desk- or wall-mounted network installations

Key specifications

• Output voltage: 48 V DC
• Maximum output current: 3 A
• Connector type: 5.5 mm barrel
• Topology: switching regulator
• Intended operation: continuous use

How to use

Confirm that the target device accepts a 48 V DC input and uses a 5.5 mm barrel connector. With the power supply unplugged, connect the barrel plug to the device input ensuring proper polarity. Plug the power supply into a suitable AC mains outlet rated for your region. After connection, verify the device powers on and operates within expected parameters. Disconnect from mains before performing any maintenance or reconfiguration.

Usage recommendations

Use the supply in well-ventilated locations and avoid covering the unit to maintain cooling. Verify voltage and current requirements of the target equipment before use, and use appropriate surge protection if the installation is in an environment with unstable mains. For installations in racks or enclosures, ensure adequate clearance for airflow and secure mounting to prevent strain on the barrel connector.