APC AR8422 Double Sided Fixed Shelf for 2 Post Rack 250 lbs Capacity

APC AR8422 3 Phase 30A Rackmount Automatic Transfer Switch

Overview

The APC AR8422 is a 3-phase, 30A rack-mounted automatic transfer switch (ATS) designed for enterprise and data center IT environments that require continuous power redundancy. Facilities engineers and IT infrastructure teams deploy this device to ensure uninterrupted operation of servers, storage systems, and networking equipment during utility outages or maintenance events. The AR8422 automatically switches between dual power sources, providing rapid and reliable power transfer to protect sensitive electronics.

The ATS supports a nominal input voltage of 208/220/240V AC with a rated current of 30A per phase. Typical switchover occurs in under 8 milliseconds, minimizing interruption to connected loads. The unit uses hardwired terminal block connections for input and output, and includes dry contact outputs to integrate with monitoring or building management systems. LED indicators on the front panel display source selection, load status, and fault conditions, allowing administrators to monitor operation and respond proactively to alerts.

The AR8422 is designed to fit standard 19-inch racks and occupies 3U of rack space, making it suitable for IDF closets, edge computing cabinets, and small-to-medium data center racks. Its compact footprint enables placement alongside UPS systems and PDUs without compromising rack density or accessibility.

Integration options include dry contact signaling for building management systems and centralized IT monitoring platforms. The ATS is compatible with APC and third-party PDUs, supporting dual utility feeds or a combination of utility and generator sources, allowing continuous power delivery in North American and international three-phase environments.

A typical deployment scenario includes a branch office or remote data center rack with dual incoming feeds. The AR8422 automatically transfers the connected load to the secondary source during a primary feed failure, maintaining power continuity for servers, storage, and networking equipment.

This device is not intended for single-phase applications or installations exceeding 30A per phase. Environments requiring higher amperage, modular ATS expansion, or full building-level integration should deploy enterprise-class ATS systems instead.

Key Features

• 3-phase 30A rack-mounted automatic transfer switch
• Sub-8 ms rapid switchover for critical IT loads
• LED indicators and dry contacts for operational monitoring
• Compatible with dual-feed UPS and PDU systems
• Standard 19-inch 3U rackmount form factor

Technical Specifications