With years of experience in producing ATS, XENHO can supply a wide range of Automatic Transfer Switches, which are designed to ensure continuous power supply for critical loads and are suitable for applications such as buildings, hospitals, data centers, and fire protection systems.
The core function of an Automatic Transfer Switch is simple: it continuously monitors the status of two power sources. When the primary power source fails, it automatically transfers the load to the backup power source. This process requires no manual intervention, and the transfer time can be precisely configured based on the load requirements.
1. Comprehensive Product Portfolio
CB Level (Integrated Type): Developed based on circuit breaker technology, this type integrates overload and short-circuit protection in a compact structure, making Automatic Transfer Switches for conventional power distribution scenarios such as residential buildings and commercial spaces.
PC Level (Dedicated Dual Power Type): This type uses a dedicated load switch with a reinforced contact system for enhanced short-circuit withstand capacity. It is specifically designed for high-reliability applications such as fire protection, medical facilities, and data centers. Protection functions are handled by upstream circuit breakers, ensuring the switching mechanism itself does not become a weak point in the system.
2. Stable Electrical Performance
Millisecond-Level Fast Transfer: For sensitive equipment such as servers and precision instruments, we offer fast-transfer models with a switching time of ≤100 ms, ensuring uninterrupted equipment operation and no data loss.
High Short-Circuit Withstand Capability: PC-level products can withstand high short-circuit current surges, maintaining a stable closed state during system faults until the upstream protection device activates.
3. Intelligent Control Platform
Standard LCD display provides clear visibility of voltage, frequency, and fault records.
Supports RS485 communication and ModBus protocol, enabling seamless integration into building automation systems or power distribution monitoring platforms for remote monitoring and management.
Control logic can be customized to meet project-specific requirements, accommodating diverse switching strategies for different scenarios.
Hospitals: Operating rooms, ICUs, life-support equipment—PC-level fast-transfer models are used in conjunction with diesel generator sets to ensure uninterrupted medical power supply.
Data Centers: Server racks, precision
| Classification | Category | Key Characteristics / Suitable Applications |
| Structure & Actuator | Integrated ATS (CB Class) | Circuit breaker-based with built-in short-circuit & overload protection; for civil buildings, shopping malls & residential communities. |
| Disconnecting Switch Type (PC Class) | Dedicated load switch body; high short-time withstand & long lifespan (no built-in protection); for fire protection, hospitals & data centers. | |
| Number of Poles | 2P | For single-phase systems; used in homes, shops & critical single-phase equipment. |
| 3P | For three-phase three-wire systems; used for distribution & motor equipment without a neutral wire. | |
| 4P | Switches phase + neutral simultaneously; mainstream for buildings, commercial & industrial applications. | |
| Switching Action | Automatic Transfer & Reset | Automatically returns to primary power after restoration; suitable for most standard scenarios. |
| Automatic Transfer without Reset | Remains on backup power until manual reset; for critical equipment requiring high stability. | |
| Switching Speed | Standard Switching | Switching time in seconds (0.5s–several sec); for general lighting, power & air conditioning. |
| Fast Switching | Switching time in milliseconds; for servers, monitoring equipment, precision instruments & fire pumps. | |
| Operation Method | Electric Operation | Automatic voltage detection, remote control & intelligent controller; standard automatic configuration. |
| Manual Operation | Forced switching via handle; used for maintenance, debugging & emergency intervention. | |
| Application & Function | Fire Protection ATS | Fire alarm linkage, forced switching & power outage retention; meets fire safety standards. |
| Intelligent ATS | LCD display, fault recording & RS485/ModBus communication; for building automation & smart distribution. | |
| Generator Dedicated ATS | Coordinates with diesel generators; auto-switching & start/stop control between mains and generator. |