Automatic Transfer Switches

Automatic Transfer Switches – Reliable Power Continuity for Every Application

Overview of Automatic Transfer Switches

Automatic Transfer Switches play a crucial role in ensuring uninterrupted power during utility failures. They automatically detect outages and shift electrical loads from the primary utility source to a backup generator without manual intervention. At Portlandia Electric Supply, our curated collection of Automatic Transfer Switches is built for homes, businesses, and mission-critical environments where reliability and safety are essential. These switches provide seamless power continuity, protect sensitive equipment, and offer consistent performance across varying load demands.

Why Choose Automatic Transfer Switches from Portlandia Electric Supply?

Our ATS collection includes models from industry-trusted manufacturers known for durability, compliance, and intelligent switching capabilities. Whether you are upgrading a residential backup system or outfitting a commercial facility, our selection covers a wide range of amperages, phases, and enclosure types.

Generac ATS Solutions

Generac offers service-rated Automatic Transfer Switches designed for both residential and commercial applications. With amp ratings between 100 A and 400 A, these switches support single-phase and three-phase configurations. All Generac ATS units are UL 1008 certified and include NEMA 3R outdoor-rated enclosures for superior weather protection. Their rapid load-transition technology minimizes downtime and ensures smooth generator transfer.

Cummins ATS Models

Cummins provides dependable automatic switching equipment, such as the RA 100 A NSE and RA 150 A SE, both designed for residential and small commercial backup systems. Known for their robust construction and precise relay performance, Cummins Automatic Transfer Switches are ideal for environments that need consistent, fast, and safe power shifting. These models also maintain strong compatibility with a wide range of Cummins generators, making them a reliable choice for long-term installations.

Champion ATS Options

Champion offers compact, user-friendly switches engineered for straightforward residential integration. Their 50 A 10-circuit NEMA 3R switch is ideal for essential household loads, while the 150 A whole-house model supports complete home coverage. As lightweight and easy-to-install units, Champion Automatic Transfer Switches are ideal solutions for homeowners seeking cost-effective yet dependable backup power management.

Key Features of Our Automatic Transfer Switches

Instant Outage Detection and Switching

Each ATS in our collection is engineered to detect utility failure automatically and transfer loads within seconds. This feature prevents system interruptions, reduces equipment risk, and maintains power continuity for lighting, HVAC systems, medical devices, servers, and more.

Flexible Amp and Phase Configurations

We offer Automatic Transfer Switches in a wide range of capacities:

Single-Phase: 50 A, 100 A, 150 A, 200 A, up to 400 A

Three-Phase: 200 A and higher
Additional features like NEMA 3R enclosures enhance durability in outdoor environments where weather resilience is essential.

Best Use Cases for Automatic Transfer Switches

Residential Homes

ATS units from 50 A to 150 A ensure essential circuits and whole-home systems stay operational during outages. Homeowners benefit from peace of mind with an automatic, hands-free power transfer process.

Light Commercial Facilities

Offices, retail stores, restaurants, and clinics benefit from 100–400 A ATS units. Models from Generac and Cummins deliver steady performance, making them ideal for businesses that cannot afford operational downtime.

Critical Infrastructure

Data centers, communication hubs, and healthcare facilities rely on Automatic Transfer Switches capable of rapid, reliable switching under high demand. These installations require robust designs with strict compliance standards.

Benefits of Choosing Portlandia Electric Supply

• Uninterrupted Power Flow: ATS units deliver automatic, seamless transitions during outages, reducing downtime.

• Trusted Brands: Our inventory includes Generac, Cummins, and Champion—leaders in backup power technology.

• Scalable Solutions: Multiple configurations allow customization based on load requirements, building type, and generator output.

• Expert B2B Support: We provide professional guidance, fast delivery options, and bulk pricing for contractors and facility managers.