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TONHE TH220D03ZZ-220AC 3A Intelligent Rectifier Module - The Heart of Compact 220VDC Wall-Mounted Control Systems
Core Product Advantages
Wall-Mounted System Optimized: Specifically designed for compact wall-mounted cabinets and confined spaces, perfectly matched for powering protection relays and RTUs
True Fanless Design: Maintenance-free natural convection cooling eliminates fan noise and prevents dust accumulation
High-Precision Clean Power: Ripple coefficient < 0.5% ensures stable power for sensitive microprocessor-based protection devices
Complete Four Remote Functions: Standard RS-485 interface supports remote monitoring and control for SCADA system integration
Robust Protection: Foldback short-circuit protection and over-temperature protection safeguard both module and connected equipment
Detailed Product Description
The TONHE TH220D03ZZ-220AC is a high-efficiency, fanless power module engineered specifically for 220VDC electrical control applications. With a rated output of 3A, this module serves as the optimal "Power Hub for Control Circuits" in wall-mounted power systems, ring main units (RMUs), and industrial control panels where space is at a premium.
Silent & Dust-Proof Operation
Unlike traditional forced-air cooled modules, the TH220D03ZZ-220AC operates completely silently. The fanless design eliminates the most common point of failure in power supplies while preventing dust intake that can cause short circuits in sensitive electronics.
Smart Management Capabilities
Equipped with standard RS-485 communication port, this module supports "Four Remote" functions, allowing system operators to monitor power supply health in real-time and remotely adjust output voltage (190V-300V range) or current limits without physical site visits.
Fail-Safe Protection System
Safety is paramount in power distribution. The module utilizes "Foldback" short-circuit protection that automatically reduces output current to safe levels during faults and resumes normal operation once cleared, minimizing downtime.
Product Images
Company Capabilities & Support
Why Choose Tonhe?
High-tech enterprise integrating manufacturing, sales, system solutions, and after-sales service. Over 290 successful projects for 220 kV to 500 kV substations and battery systems above 1000 Ah. Leading DC power system supplier in China with over 40% market share and 1 million modules produced annually.
Quality Assurance
8 advanced production lines with 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 to ensure reliable 24/7 performance in critical power infrastructures.
Business Support
Full range of power conversion modules, system-level low-voltage DC distribution cabinets for DC loads, data center power systems, and customized hardware and software power solutions.
Ordering & Payment
Sample orders available for quality testing (customer pays sample cost). Payment accepted via TT (Telegraphic Transfer).
R&D Excellence
350+ elite R&D engineers with core team members from renowned domestic and international universities. Deep patent portfolio covering high-frequency soft-switching, digital control algorithms, and EMC design. Drafting unit for multiple power supply industry standards.
Global Service & Support
7x24 remote intelligent operations and maintenance with IoT technology for quick fault identification and solutions. Full product line passes CE, 9001, IEC certifications, complying with major global market entry standards.
Company Details
Bronze Gleitlager
,
Bronze Sleeve Bushings
and
Graphite Plugged Bushings
from Quality China Factory
Business Type:
Manufacturer
Year Established:
1998
Total Annual:
210000000-250000000
Employee Number:
1800~2000
Ecer Certification：
Verified Supplier
Shijiazhuang Tonhe Electronic Technology Co., Ltd. is a high-tech enterprise dedicated to technological innovation, product innovation, and management innovation in the power electronics industry. The company integrates R&D, manufacturing, sales, and service in the power electronics sector, prov... Shijiazhuang Tonhe Electronic Technology Co., Ltd. is a high-tech enterprise dedicated to technological innovation, product innovation, and management innovation in the power electronics industry. The company integrates R&D, manufacturing, sales, and service in the power electronics sector, prov...
