UPDATE: PSI Power & Controls and Salient Power Systems have merged. Read More Here »

Automatic Transfer Switches

Automatic transfer switches offer a direct and immediate switching between utility (main) and supplementary or standby power sources. These devices are ideal when used in combination with a tap box setup and a generator, and offer a business an easy and safe means of maintaining access to reliable power during an unexpected outage or planned mechanical maintenance and testing.

In the event of a loss in power, the switch will automatically detect power loss and immediately switch to auxiliary power seamlessly in milliseconds, eliminating stutters in power that can result in complications for many businesses and industries. When utility power is restored and stable, the automatic switch will reverse and return power to the main source.

Automatic transfer switches offered by PSI Power & Controls come in ranges from 200–5000 amps, and are ideal for hospitals, manufacturing, gas stations, fuel centers, hospitality, educational facilities, and more.

All products are UL1008 labeled and come with Cam-Lok® color-coded cables for fast and simple connection and circuit identification. Available NEMA enclosures include the NEMA 1, NEMA 3R, and NEMA 4X, suitable for indoor, indoor and outdoor, or both with added corrosion resistance respectively. Products can be service entrance rated or non-service entrance rated accordingly.

Eaton Magnum Automatic Transfer Switch

Amp ranges are 1600–5000 amps, and the Magnum is available in 3- and 4-pole configurations. If choosing NEMA 3R for the Magnum automatic transfer switch, please indicate heater option preference.

Eaton Automatic Transfer Switch Contactor Operation

Available amp ranges are from 200–1600 as needed. The automatic transfer switch with contactor operation is available in 3- and 4-pole configurations and features multi-tap transformer with primary tap voltages including 575/600, 480, and 208/240.

Eaton Automatic Transfer Switch Breaker Operation

Amp ranges of 200–1000 are available in accordance with your needs. Ground fault protection comes standard on the 1000-amp unit, and standard 3- or 4-pole configurations are available.

Product Usage

Automatic transfer switches are particularly valuable for businesses that can’t handle any interruption in power. Due to the less than a second recovery time, ATS products are ideal for handling the power needs of vital tools and equipment, including heating and cooling, safety equipment, supply storage, lights and security systems, and tools that undergo routine servicing and maintenance.

All products come with a range of available accessories, including testing kits, additional Cam-Lok® cables, mounting hardware, and ideal supplementary and complementary products (such as tap boxes and safety switches).

Automatic Transfer Switch FAQs

Are automatic transfer switches safe?

Yes, automatic transfer switches are quite safe, as long as they’re sized and configured properly for your application. During a blackout, they disconnect from the utility grid and transfer connected loads to a standby generator without back-feeding power into the utility lines. Back-feeding can pose a threat to any technicians that would be servicing those lines during a blackout.

To ensure the safety of your building and personnel during power outages, calculate the total current draw of the loads that will be connected to the transfer switch and choose a switch that has a higher amperage rating than the total of those loads. Adding headroom for inductive motor startups and future growth is also a good idea, so choosing a switch with 150% to 200% of your total loads would be ideal.

At PSI Power & Controls, we can help you select the best automatic or manual transfer switch for your needs and budget.

How much do automatic transfer switches cost?

The cost of an automatic transfer switch will depend on several factors, including:

  • The application it will be used for.
  • The voltage and amperage requirements of your loads.
  • The enclosure type.
  • The cost of accessories like load monitors, power meters, disconnect switches, phase reversal relays, and cable lugs.

A basic two-way transfer switch will cost less than a dual-purpose or three-way transfer switch, while those for three-phase power will be more costly than those for single-phase power. Likewise, as amperage rating increases, so will the cost due to the heavier bus bars and other components required to carry the extra current.

To request a quote for an automatic transfer switch configured to your custom specifications, contact PSI Power & Controls today.

Call PSI Power & Controls for Automatic Transfer Switches

For any unique or special requirements, PSI Power & Controls offers an option and solution. We’re well-versed in custom fabrication and meeting the needs of our clients.

Call (704) 594-4107 to connect with our experts right away.

You Might Also Be Interested In:

Certifications

iso
ul
elt
Contact Your Rep Today