AC220V to DC24V 400W Isolated Switching Power Supply Module
AC220V to DC24V 400W Isolated Switching Power Supply Module
AC220V to DC24V 17A 400W Isolated Switching Power Supply Module
Upgrade your audio amplifier, LED lighting system, or industrial equipment with this high-performance isolated switching power supply module. Featuring a 400W stable rated output and adjustable voltage range of 20–29.5VDC, this compact power board delivers rock-solid, low-noise power for demanding applications — from subwoofers and amplifiers to scientific research and LED arrays.
Made in Mainland China.
Key Features
- LLC Resonant Technology: Utilizes an imported, integrated dedicated LLC chip with fully integrated startup, drive, control, and protection functions for superior efficiency and reliability.
- 400W Stable Rated Output: Supports high-current startup with fast dynamic response — ideal for instant high-dynamic loads like audio amplifiers and subwoofers.
- Adjustable Output Voltage: Fine-tune output from 20V to 29.5VDC to match the exact requirements of your build or system.
- Silent Operation: Compact, fanless design with a high-utilization transformer core that fundamentally eliminates high-frequency howling for whisper-quiet performance.
- Long-Life Capacitors: Front and rear stages are equipped with ample electrolytic capacitors, delivering low high-frequency loss, high temperature resistance, and extended service life.
- Built-In Protection: Overcurrent and short-circuit protection safeguard your equipment and the module itself.
- Peak Efficiency ≥93%: Minimizes wasted energy and heat generation for cooler, more economical operation.
Technical Specifications
| Input Voltage | AC 200–260V, 50/60Hz |
| Output Voltage | DC 24V (adjustable 20–29.5VDC) |
| Rated Current | 17A |
| Peak Current | 20A |
| Rated Power | 400W |
| Peak Power | 500W |
| Peak Efficiency | ≥93% |
| Protection | Overcurrent, Short Circuit |
| Applications | Audio Amplifiers, LED Lighting, Industrial Equipment, Scientific Research Equipment |
| Origin | Mainland China |
What's in the Box?
- 1× Isolated Switching Power Supply Module
Important Notes
- Due to lighting and screen differences, the item's color may appear slightly different from the pictures.
- Please allow 1mm–1cm differences due to manual measurement.
- This module requires AC 200–260V input. Ensure your installation environment meets this requirement before use.
For guidance on electrical safety standards and best practices when working with power supply components, visit OSHA Electrical Safety.
Frequently Asked Questions
Q: What devices is this 400W switching power supply module compatible with?
A: This isolated switching power supply module is designed for a wide range of applications including audio amplifiers, subwoofers, LED lighting systems, industrial equipment, and scientific research devices. Its adjustable DC output (20–29.5V) makes it highly versatile for custom builds and professional installations.
Q: Can I adjust the output voltage on this power supply module?
A: Yes. The output voltage is adjustable from 20VDC to 29.5VDC, giving you the flexibility to fine-tune it to the exact voltage requirement of your equipment. The default output is set to 24VDC.
Q: Is this power supply module safe to use? What protections does it have?
A: This module includes built-in overcurrent protection and short-circuit protection to safeguard both the module and connected devices from damage in the event of a fault. Always ensure proper installation and ventilation in your enclosure for safe, long-term operation.
Q: What is the efficiency rating of this switching power supply?
A: The module achieves a peak efficiency of ≥93%, which means minimal energy is wasted as heat. This makes it suitable for continuous-duty applications where thermal management is important.