QHX Series Dual Power Supply Transfer Box
QHX series dual power supply box features an adjustable track movable block system on the internal component mounting plate, enabling flexible positioning of internal components to accommodate different device configurations. This design makes it easy to install dual power supply (ATS) components of various sizes and manufacturers without requiring custom drilling or mounting modifications.
The enclosure construction has been upgraded from conventional sheet metal to an aluminum alloy frame edge structure, significantly improving the durability, dimensional stability, and corrosion resistance of the chassis compared to traditional all-steel welded enclosures — the aluminum alloy frame provides lightweight strength while eliminating the risk of edge corrosion common in standard steel enclosures in damp environments.
Technical Specifications
| Item | Specification |
|---|---|
| Rated Voltage | AC 400V / 415V |
| Rated Frequency | 50Hz / 60Hz |
| Rated Current | 63A / 100A / 160A / 250A / 400A (selectable by model) |
| System Configuration | Three-phase four-wire / Three-phase five-wire |
| Transfer Type | Automatic / Manual / Remote (configurable) |
| Transfer Time | 0.1 – 5.0 seconds (adjustable) |
| Switching Device | MCCB-based or contactor-based ATS mechanism |
| Degree of Protection | IP40 / IP54 (optional) |
| Enclosure Frame | Aluminum alloy frame with steel panel construction |
| Mounting Plate | Adjustable track with movable mounting blocks |
| Component Configuration | Flexible — supports multiple ATS brands and sizes |
| Installation Type | Indoor, wall-mounted or floor-standing |
| Standards | GB/T 14048.11, IEC 60947-6-1 |
Key Features
- Adjustable Track Mounting System: Internal component mounting plate utilizes an innovative adjustable track with movable blocks, allowing components to be quickly repositioned, added, or replaced without drilling new holes or modifying the mounting plate — significantly reducing installation time and providing maximum layout flexibility for different dual power transfer switch makes and models
- Aluminum Alloy Frame Construction: Upgraded from conventional steel-only construction to an aluminum alloy frame edge with steel panel inserts — the aluminum frame provides excellent corrosion resistance, reduced weight for easier handling and installation, and enhanced dimensional stability over the product service life compared to traditional welded steel enclosures
- Versatile Component Compatibility: The flexible mounting system accommodates a wide variety of dual power switching devices from different manufacturers — automatic transfer switches (ATS), contactor-based changeover mechanisms, MCCB-based mechanical interlock assemblies, and solid-state transfer switches — without requiring enclosure or mounting plate customization
- Simplified Installation Process: The removable mounting plate can be pre-assembled with ATS components, control wiring, and auxiliary devices on a workbench before being installed into the enclosure — reducing on-site installation time by up to 40% compared to traditional in-enclosure assembly methods
- Durable Corrosion-Resistant Construction: The aluminum alloy frame eliminates edge rust and corrosion propagation commonly experienced with all-steel enclosures in humid environments, coastal installations, or unconditioned indoor spaces — the steel panels retain magnetic properties for component attachment while the aluminum frame provides structural integrity and corrosion immunity
- Clear Status Indication: Front panel with LED or LCD status indicators showing current active power source, ATS position (Normal/Standby/Off), and system alarm conditions — enabling at-a-glance system status assessment by facility operators
- Flexible Cable Entry: Top and bottom cable entry points with knock-out openings accommodate incoming mains cable, standby generator or secondary supply cable, and outgoing load cables in a logical top-to-bottom or bottom-to-top routing arrangement
Applications
- Commercial buildings — essential power supply changeover for life safety systems
- Industrial facilities — process-critical power supply continuity
- Residential complexes — standby generator automatic changeover
- Hospitals and healthcare — emergency power supply switching
- Telecommunications — backup power supply changeover
- Data centers — critical load power supply redundancy
- Infrastructure — fire pumps, emergency lighting, and security systems