TH400X Series Fire Protection Power Supply Module
Product Overview
The TH400X Series is a high-frequency switching power supply module specifically designed for fire protection systems. Developed by Tonghe Electronic Technology Co., Ltd., this module adopts advanced resonant voltage-type dual-loop control technology, ensuring high efficiency, compact size, and reliable performance. With a nominal output voltage of 400V DC and a built-in standard RS-485 interface, it supports seamless integration into automated monitoring systems, making it an ideal power solution for fire safety and related critical applications.
Key Specifications
Model Number: TH400X03ZZ
Brand Name: TONHE
Input Voltage: 323-437VAC/380VAC
Output Current: 7A
Output Voltage: 300-450VDC/405VDC
Power: 3.2 KW
Efficiency: ≥94%
Dimensions: 260*116*218mm
Weight: 9 kg
Working Temperature: -10℃ to +45℃
Warranty: 12 months
Technical Advantages
- Modular design with N+1 hot redundancy for flexible and scalable power capacity
- High efficiency of up to 94%-96%, with passive power factor correction (PF ≥ 0.88)
- Comprehensive protection including overvoltage, overcurrent, short-circuit, and overtemperature safeguards
- Intelligent control via RS-485 communication, enabling remote monitoring, adjustment, and synchronization
- Supports plug-and-play installation and easy maintenance without system downtime
- Clear LED display and user-friendly interface for real-time voltage, current, and fault status indication
Model Comparison
| Model |
400X03ZZ |
400X05ZZ |
400X07ZZ |
| Output Current (A) |
3 |
5 |
7 |
| Output Power (KW) |
1.3 |
2.2 |
3.2 |
| Weight (kg) |
5 |
9 |
9 |
Application Scenarios
This power supply module is primarily designed for fire protection systems, ensuring uninterrupted and stable power to critical fire safety equipment. It is also suitable for various industrial and commercial applications requiring reliable DC power, such as emergency lighting, security systems, communication infrastructure, and other automated facilities where remote monitoring and high system availability are essential.
Product Gallery
Company Information & Support
Why choose Tonhe?
We are a high-tech enterprise integrating manufacturing, sales, system solutions, and after-sales service. With over 290 successful projects for 220 kV to 500 kV substations and battery systems above 1000 Ah, Tonhe has become a leading DC power system supplier in China, holding over 40% market share and producing 1 million modules annually. Choose us for exceptional quality, reliable support, and proven value.
How can we guarantee quality?
Our 8 advanced production lines, equipped with imported machinery, achieve 80% automation and up to 99% first-pass yield. All power modules undergo double-sided potting, conformal coating, and rigorous functional, environmental, and aging tests—ensuring reliable 24/7 performance in critical power infrastructures.
How We Support Your Business?
A full range of power conversion modules, system-level low-voltage DC distribution cabinets for DC loads, data center power systems, as well as customized hardware and software power solutions.
Can customers get sample orders?
Yes, you can get sample orders to test our quality. The cost of samples is paid by the customer.
What are the payment types?
We accept payment via TT (Telegraphic Transfer).
