QHX-1000 Type Dual Power Supply Automatic Transfer Switch (ATS) Box
QHX-1000 type dual power supply box is a specific model within the QHX series, designed for automatic transfer switching between primary (normal/mains) and secondary (standby/emergency) power sources in low voltage distribution systems up to 1000A rated current. The component mounting plate utilizes an adjustable track with movable blocks, providing a flexible internal configuration system that enables easy installation of dual power supply switching components of varying sizes and manufacturers without requiring custom drilling or mounting modifications.
The enclosure construction has been upgraded from conventional all-steel fabrication to an aluminum alloy frame edge design, significantly improving the durability, dimensional stability, and corrosion resistance of the chassis. The aluminum alloy frame provides lightweight structural strength while eliminating the risk of edge rust and corrosion propagation commonly experienced with standard steel enclosures in humid or coastal environments.
Technical Specifications
| Item | Specification |
|---|---|
| Rated Voltage | AC 400V / 415V |
| Rated Frequency | 50Hz / 60Hz |
| Rated Current | Up to 1000A |
| System Configuration | Three-phase four-wire / Three-phase five-wire |
| Transfer Type | Automatic / Manual / Remote (selectable) |
| Transfer Time | 0.1 – 5.0 seconds (adjustable) |
| Switching Device | MCCB-based ATS / Contactor-based changeover |
| Degree of Protection | IP40 / IP54 (optional) |
| Enclosure Frame | Aluminum alloy frame with steel panel inserts |
| Mounting Plate | Adjustable track with movable mounting blocks |
| Cable Entry | Top and bottom entry with knock-out openings |
| Installation Type | Indoor, floor-standing or wall-mounted |
| Standards | GB/T 14048.11, IEC 60947-6-1 |
Key Features
- High Current Capacity: Rated for systems up to 1000A, making the QHX-1000 suitable for larger commercial, industrial, and infrastructure applications requiring automatic changeover between high-capacity mains and standby power sources
- Adjustable Track Mounting System: The innovative adjustable track with movable blocks allows quick repositioning of ATS components, controllers, and auxiliary devices without drilling or plate modification — dramatically reducing installation time and providing maximum layout flexibility for accommodating different makes and models of automatic transfer switching equipment
- Aluminum Alloy Frame Upgraded Construction: The transition from conventional welded steel to aluminum alloy frame edge construction delivers improved corrosion resistance, reduced weight for easier handling, and enhanced long-term dimensional stability — the aluminum frame eliminates edge rust propagation while maintaining structural rigidity equal to or exceeding traditional all-steel enclosures
- Flexible Component Compatibility: The adjustable mounting system accommodates a wide range of ATS switching devices including MCCB-based mechanical interlock assemblies, contactor-based changeover contactors, and dedicated automatic transfer switch mechanisms — supporting both open-transition (break-before-make) and closed-transition (make-before-break) switching schemes
- Durable Corrosion-Resistant Chassis: Aluminum alloy frame construction provides inherent corrosion immunity, making the QHX-1000 particularly suitable for installation in coastal environments, high-humidity industrial facilities, air-conditioned equipment rooms, and other challenging indoor environments where steel enclosure edge corrosion is a common service life limitation
Applications
- Commercial buildings — main distribution board automatic changeover
- Industrial facilities — process-critical power supply continuity
- Hospitals — essential electrical system automatic transfer
- Data centers — critical load power supply redundancy
- Infrastructure — fire pumps, emergency lighting, and security systems
- Large residential complexes — standby generator automatic switching