24V And 48V Power Supplies: Industrial & Networking Use
When it comes to powering industrial equipment, networking hardware and automation systems, 24V and 48V DC power supplies are among the most common choices in the field. These voltages are widely used across a range of applications because they offer a practical balance between power delivery, efficiency and safety. Whether you’re setting up a security system, a telecommunications rack or a control panel, selecting the right power supply is critical to reliability and performance.
Campad Electronics understands that choosing the correct power supply involves more than just matching voltage. Current capacity, connector type, form factor and protection features all play a role. This article provides a practical overview of 24V and 48V switchmode power supplies, their typical uses and what to consider when selecting one for your project.
Why 24V and 48V Are Industry Standards
24V DC Power Supplies
24V DC is a standard voltage in industrial control systems, automation and lighting. It powers PLCs, sensors, relays, solenoid valves and LED lighting systems. Many DIN-rail power supplies and panel-mounted units operate at 24V, making it a versatile choice for electricians and technicians working in manufacturing, building management and process control.
48V DC Power Supplies
48V DC is commonly used in telecommunications, networking and data communications equipment. It is also the standard voltage for Power over Ethernet (PoE) switches and injectors, as well as some audio systems and solar backup setups. The higher voltage allows for more efficient power transmission over longer cable runs, which is why it is preferred for networking installations and remote equipment.
Available 24V Power Supplies at Campad Electronics
Campad Electronics offers several 24V switchmode power supplies to suit different current requirements and connection types. These are suitable for a range of industrial, commercial and DIY applications.
- 24V 3A Switch Mode Power Supply (72W, 2.1mm plug) – $43.99
- 24V 3A Switch Mode Power Supply (72W, 2.5mm plug) – $41.49
- 24V 4A Switch Mode Power Supply (96W, 2.1mm plug) – $54.49
- 24V 10A Switch Mode Power Supply (240W, 2.5mm plug) – $139.99
Each unit features switchmode technology, which delivers high efficiency and stable DC output while generating less heat than traditional linear supplies. Built-in protection against short circuits and overvoltage conditions is standard on these models.
Available 48V Power Supplies
For networking and telecommunications projects, Campad Electronics also stocks a 48V option:
- 48V 2A Switch Mode Power Supply – $66.49
This supply is well suited for devices such as PoE switches, routers, modems and other equipment that require a 48V DC input. As with all switchmode units, it provides a regulated output and includes protection features to safeguard connected equipment.
How to Choose the Right Power Supply for Your Application
1. Determine Your Load Requirements
Start by calculating the total wattage your devices require. Multiply the voltage (24V or 48V) by the total current draw in amps. Always allow a safety margin of at least 20–30% above the calculated load. This helps avoid overloading the supply and extends its lifespan.
2. Check Connector Types
The physical plug must match your device. Campad Electronics offers units with 2.1mm and 2.5mm DC barrel connectors. Check your device’s input jack before ordering. Using the wrong connector can lead to poor contact or damage.
3. Consider the Form Factor
Some power supplies are plug packs (wall adapters), while others are standalone units with removable plugs or terminal connections. Think about where the supply will be mounted. Will it sit on a bench, inside a cabinet or mounted to a DIN rail? Ensure there is adequate airflow around the unit, especially for higher-wattage models.
4. Review Protection Features
Switchmode power supplies from Campad Electronics include short circuit and overvoltage protection as standard. These features help prevent damage to both the supply and the connected equipment. For industrial use, this is a valuable layer of safety.
5. Understand Australian Electrical Standards
In Australia, all electrical equipment must comply with relevant safety standards. While the power supplies listed are designed for use with suitable equipment, installers should ensure their overall setup meets Australian wiring regulations. For permanent installations, a licensed electrician should be consulted.
Typical Applications
24V and 48V power supplies are used in a wide range of settings. Below are some common examples:
- Industrial automation: Control panels, PLCs, sensors and actuators
- Networking and IT: PoE switches, routers, firewalls and access points
- Security systems: Cameras, access control units and intercoms
- LED lighting: Low-voltage lighting strips and modules
- Audio equipment: Mixers, preamps and signal processors
- Telecommunications: Modems, line drivers and communication gateways
Conclusion
24V and 48V power supplies are essential components in many electrical and electronic systems. Whether you’re working in industrial automation, networking or security installation, choosing the right supply ensures your equipment operates reliably and safely. Pay attention to voltage, current capacity, connector type and protection features when making your selection.
Campad Electronics offers a range of switchmode power supplies that provide efficient, regulated DC power for these applications. With options at 24V and 48V and current ratings from 2A to 10A, there is a suitable model for most projects. For more information on the full range, visit the DC power supplies page on the Campad Electronics website.
