DA778-HK 24V DC Refrigeration Control Box with Sealed Dustproof & Waterproof Enclosure and Color-Coded Wiring Terminals

The DA778-HK 24V DC refrigeration unit electric control box serves as a core component for refrigeration systems, functioning as a professional controller for all types of cooling equipment. This dedicated DC24V refrigeration control module integrates precise control for compressors, evaporator fans, condenser fans, and defrost valves, delivering stable and efficient operation for refrigerated trucks, cold chain transport vehicles, cold storage facilities, industrial refrigeration units, and commercial refrigeration appliances. This patented refrigeration control box (Patent No. ZL202020947423.5) is engineered to meet demanding requirements of both mobile and stationary refrigeration systems, making it an ideal control solution for aftermarket replacement and OEM integration.

• Full-Function Refrigeration System Control
  Centralized control for refrigeration compressor (CMP), evaporator fan (EF), condenser fan (CF), and defrost valve (DEF), ensuring coordinated operation of the entire refrigeration unit. Optimized control logic for energy efficiency reduces power consumption while maintaining consistent cooling performance for cold chain transport and cold storage. Compatible with 24V DC refrigeration systems, perfect for refrigerated trucks, van refrigeration units, and mobile cold chain equipment.
• Comprehensive Safety Protection for Refrigeration Control
  Built-in dedicated fuses for all circuits (CF/EF/CMP/DEF/Power) to prevent overload, short-circuit, and overcurrent damage to refrigeration components. Backup fuse storage inside the enclosure allows for quick on-site replacement, minimizing downtime for refrigeration units and cold chain transport operations. Sealed, rugged enclosure provides dustproof, waterproof, and vibration-resistant performance suitable for harsh environments.
• Easy Installation & Universal Compatibility
  Color-coded wiring terminals with clear specifications simplify installation for refrigeration unit technicians and HVAC professionals. Pre-configured fuse ratings (DC24V: CF 30A, EF 30A, CMP 10A, DEF 10A, Power 5A) enable plug-and-play use with most 24V refrigeration systems. Standard connector design facilitates easy replacement of old refrigeration control boxes.
• Reliable Construction & Patented Design
  Heavy-duty sealed enclosure protects internal control circuits from moisture, dust, and mechanical vibration, extending service life. Patented refrigeration control technology (ZL202020947423.5) ensures superior stability and reliability compared to generic controllers. Batch traceability (Batch No. 20251211) provides quality assurance meeting strict standards.

• Refrigerated Transport: Refrigerated trucks, refrigerated vans, cold chain trucks, mobile cold rooms, and refrigerated containers for food, pharmaceutical, and fresh produce transport
• Cold Storage & Industrial Refrigeration: Cold storage warehouses, industrial refrigeration units, walk-in coolers, and freezer rooms
• Commercial Refrigeration: Supermarket display cases, commercial freezers, refrigeration cabinets, and food processing cooling equipment
• Aftermarket Replacement: Ideal replacement control box for damaged or outdated refrigeration unit controllers in all types of 24V DC refrigeration systems

Package Includes: 1 x DA778-HK 24V Refrigeration Unit Electric Control Box, 1 x Set of Backup Fuses, 1 x Installation & Wiring Diagram Manual

Warranty: 12-month manufacturer warranty against defects

Technical Support: Professional after-sales support for refrigeration system installation, troubleshooting, and maintenance

Customization: OEM/ODM support for refrigeration equipment manufacturers and bulk orders for cold chain logistics companies