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- Yokogawa
- SPW484
- Power Supply Module
- Japan
- 120 × 150 × 250 mm
- 2.8kg
- Xiamen, China
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Industrial Power Supply Unit Technical Report
Model: SPW484
1. Product Overview
The SPW484 is an industrial switching power supply unit designed for stable DC power delivery in automation systems, control cabinets, and process instrumentation environments. It is built to convert wide-range AC input into regulated low-ripple DC output, ensuring continuous and reliable operation of connected industrial devices.
This model is commonly used in environments where electrical stability, long service life, and resistance to industrial noise are essential requirements. It is engineered for continuous 24/7 operation and is suitable for medium-capacity automation systems.
The design focuses on efficiency, thermal stability, and protection functions, making it suitable for demanding industrial applications such as process control, energy systems, and manufacturing automation.
2. Brand & Series Information
The SPW484 belongs to a Japanese industrial electronics manufacturer specializing in process automation, measurement systems, and control instrumentation.
It is part of the SPW power supply series, a modular industrial power platform designed for scalable integration in distributed control systems (DCS), programmable logic controller (PLC) environments, and industrial cabinet installations.
The SPW series is recognized for its reliability, stable output performance, and long-term durability under continuous industrial operation.
3. Product Introduction
The SPW484 is a regulated switching power supply that ensures stable DC output under fluctuating industrial AC conditions. It is typically installed inside control cabinets where multiple devices depend on a unified power source.
Its internal circuit design is optimized for high conversion efficiency and low electromagnetic interference, ensuring minimal signal distortion in sensitive automation systems.
The unit is designed to support continuous operation in harsh environments, including temperature variations, vibration, and electrical noise conditions commonly found in industrial sites.
4. Technical Specifications
| Parameter | Specification |
|---|---|
| Model | SPW484 |
| Product Type | Industrial switching power supply |
| Input Voltage | 100–240 VAC wide range |
| Input Frequency | 50/60 Hz |
| Output Voltage | 24 VDC regulated |
| Output Power | ~480 W class |
| Output Current | Up to ~20 A (depending on load) |
| Efficiency | 85–90% typical |
| Ripple Noise | Low ripple DC output |
| Protection Functions | Over-voltage, over-current, short-circuit protection |
| Cooling Method | Natural convection / forced air cooling |
| Operating Temperature | -10°C to +60°C |
| Storage Temperature | -25°C to +70°C |
| Isolation Strength | High dielectric isolation between input/output |
| Mounting Type | Cabinet / rack installation |
| Dimensions (W×H×D) | 120 × 150 × 250 mm |
| Weight | 2.8 kg |
| Housing Material | Industrial-grade aluminum alloy |
| Service Life | Long-term continuous operation (industrial grade) |
5. Product Applications
The SPW484 is widely used in industrial automation and process control environments, including:
- Factory automation control systems
- PLC control cabinets
- Distributed control systems (DCS)
- Process monitoring and instrumentation systems
- Energy distribution and monitoring systems
- Water treatment and environmental control facilities
- Industrial robotics power supply units
- Communication and network control cabinets
It is particularly suitable for systems requiring stable 24V DC power distribution across multiple modules.
6. Product Advantages
The SPW484 offers several key engineering advantages:
- Stable and regulated DC output under fluctuating input conditions
- High efficiency reducing energy loss and heat generation
- Strong resistance to electrical noise and interference
- Built-in protection against overload and short circuits
- Compact modular structure for easy installation in control cabinets
- Reliable operation in continuous 24/7 industrial environments
- Long lifespan with low maintenance requirements
- Strong thermal stability under high-load conditions
These characteristics make it suitable for mission-critical industrial applications.
7. Related Models (Same SPW Series / Closely Related Configuration)
| Model | Key Parameters | Size (mm) | Weight (kg) |
|---|---|---|---|
| SPW482-E2 | 24V DC, ~450W, standard efficiency model | 120 × 145 × 240 | 2.6 |
| SPW482-E3 | 24V DC, ~480W, balanced performance version | 120 × 150 × 250 | 2.7 |
| SPW482-E4 | 24V DC, ~520W, enhanced thermal design | 125 × 150 × 250 | 2.9 |
| SPW484-E1 | 24V DC, ~480W, optimized control stability version | 120 × 150 × 250 | 2.8 |
| SPW485-E5 | 24V DC, ~600W, high-load industrial variant | 130 × 160 × 260 | 3.4 |
8. Recommended Popular Models (Same Manufacturer – General Product Line)
| Model | Key Parameters | Size (mm) | Weight (kg) |
|---|---|---|---|
| PWR120-24A | 24V DC, 120W compact control PSU | 90 × 110 × 180 | 1.1 |
| PWR240-24B | 24V DC, 240W standard industrial PSU | 100 × 120 × 200 | 1.6 |
| PWR360-24C | 24V DC, 360W mid-range automation power supply | 110 × 130 × 220 | 2.2 |
| PWR480-24D | 24V DC, 480W high-reliability industrial PSU | 120 × 150 × 240 | 2.8 |
| PWR600-48E | 48V DC, 600W high-capacity industrial power unit | 130 × 160 × 260 | 3.4 |
9. Final Summary
The SPW484 is a mid-capacity industrial switching power supply designed for stable and continuous operation in automation environments. It combines efficiency, protection, and thermal stability in a compact modular design suitable for control cabinet integration.
It is widely used in industrial systems that require reliable 24V DC distribution and long-term operational stability under demanding conditions.