The Automatic Transfer Switch (ATS) is the core switching component in dual-power supply systems, typically deployed alongside ATS cabinets. It enables automatic monitoring and seamless switching between primary and backup power sources, ensuring uninterrupted power supply for critical loads. Widely used in high-priority applications such as fire protection, healthcare, data centers, financial institutions, and rail transit systems, it plays a vital role in maintaining operational reliability.

product highlights:

Millisecond-level seamless switching: The primary-to-backup power switchover time is adjustable between 0.1 and 30 seconds, ensuring zero power interruption for critical loads.

Dual configuration options available upon request: PC-level (integrated isolator with high reliability) and CB-level (circuit breaker combination with short-circuit/overload protection).

Intelligent real-time monitoring: Built-in three-phase voltage/frequency detection module continuously monitors undervoltage, overvoltage, and phase loss, supporting various operating modes including automatic transfer-recovery (ATR) and automatic transfer-no-recovery (ATNR).

High mechanical durability: The PC-level unit offers a service life of ≥6,000 cycles; its switching mechanism features three stable positions to ensure complete isolation between power supplies and can be locked to prevent accidental operation.

The product range offers rated currents spanning from 6 A to 400 A, categorized into two types based on structure and protection configuration: PC-class isolated units and CB-class circuit breaker units, allowing flexible selection tailored to specific safety requirements and protection needs.

The PC-grade ATS features an integrated isolating switch design without a built-in protective tripping unit, offering excellent electrical isolation performance. Its mechanical transmission structure is simple yet durable, with long service life and low failure rate, ensuring rapid switching response and stable operation.
The 6A PC-grade ATS is designed for applications such as small loads, laboratory precision instruments, and monitoring equipment; the 63A PC-grade ATS withstands frequent switching and is specifically engineered for uninterrupted power supply scenarios like data centers and small server rooms. This product category emphasizes electrical safety isolation and is suitable for critical loads requiring extremely high power continuity and equipment isolation.

The CB-grade ATS is composed of standard circuit breakers and integrates dual protection functions for overload and short circuit. It provides circuit protection for downstream loads while enabling power switching, offering enhanced comprehensive protection capabilities. The 32A CB-grade ATS is the mainstream choice for commercial applications, suitable for critical loads in office spaces, commercial lighting systems, and small server rooms; the 125A and 250A models are designed for medium-to-large-scale applications such as retail stores, small factories, hospital outpatient departments, and medium-sized supermarkets; the high-capacity 400A CB-grade ATS excels in load handling and is specifically tailored for high-power power supply systems in industrial plants and large data centers.

application scenarios:

PC-grade ATS is primarily used in high-risk scenarios requiring uninterrupted power supply, such as hospital ICUs, operating rooms, data center core servers, and fire protection control systems; CB-grade ATS is commonly employed in commercial buildings, office complexes, industrial facility emergency lighting systems, and standard server rooms where basic circuit protection is essential. As a core component of dual-power redundant architectures, the ATS switch ensures uninterrupted power supply for critical equipment in civilian, industrial, and high-end sectors, and is a mandatory component specified in fire safety and electrical design standards.