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Power supplies
Power supplies are the backbone of any industrial automation system, converting raw AC mains voltage into stable, regulated DC power for control circuits, PLCs, sensors, and actuators. These units are typically DIN-rail mountable, with input ranges covering 100-240V AC or 110-370V DC, and output voltages of 5V, 12V, 24V, or 48V DC. Key technical...
Power supplies are the backbone of any industrial automation system, converting raw AC mains voltage into stable, regulated DC power for control circuits, PLCs, sensors, and actuators. These units are typically DIN-rail mountable, with input ranges covering 100-240V AC or 110-370V DC, and output voltages of 5V, 12V, 24V, or 48V DC. Key technical parameters include output current (e.g., 1.25A, 2.5A, 5A, 10A), efficiency ratings above 90%, and protection features like overvoltage, overload, and short-circuit protection. Many models offer a power boost function for high inrush loads, and some include a DC OK relay contact for remote monitoring. The form factor is compact, often with a width of 22.5mm to 90mm, and they are designed for ambient temperatures from -25°C to +70°C, with derating curves for higher temperatures. In the US, these are often called "switching power supplies" or "DIN rail power supplies," while in Europe, they are referred to as "power supply units (PSU)" or "switched-mode power supplies (SMPS)."
Power supplies are installed in control cabinets, electrical panels, and distribution boards across a wide range of sectors. In manufacturing, they power programmable logic controllers (PLCs), human-machine interfaces (HMIs), and motor drives. In process industries like oil and gas, they ensure reliable operation of field instruments and safety systems. Building automation relies on them for HVAC controllers, lighting systems, and access control panels. Renewable energy installations, such as solar and wind farms, use ruggedized power supplies for inverters and monitoring equipment. They are also critical in data centers, telecommunications, and medical equipment, where voltage stability and low ripple are paramount.
Key subcategories include single-phase and three-phase power supplies, with part numbers often structured as "DR-120-24" (DIN Rail, 120W, 24V output) or "S-100-12" (single output, 100W, 12V). Common series include the "DR" series for DIN rail mounting, "NDR" series for narrow profile, and "HDR" series for high efficiency. For example, the "DR-60-24" is a 60W, 24V unit, while the "S-350-48" is a 350W, 48V model. Other relevant codes include "LRS-150-24" for enclosed types and "EDR-120-24" for industrial DIN rail units. These codes typically follow a pattern: [Series]-[Wattage]-[Output Voltage], making selection straightforward for engineers.
At Electric Automation Network, we offer real-time pricing and express worldwide shipping, ensuring you get the right power supply when you need it. Our team of specialized engineers provides personalized technical support to help you select the correct unit based on your load requirements, ambient conditions, and mounting constraints. We also supply detailed technical documentation, including datasheets and wiring diagrams, for every article. Whether you need a standard 24V unit or a specialized 48V model for telecom applications, we have the expertise and inventory to support your project.
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