Automatic Transfer Switches (ATS) for Commercial and Industrial Generators

Auto and manual transfer switches are critical components of an emergency standby system. Available in sizes ranging from 200 AMP through 5000 AMP, Global Power Supply has a solution to suit every project’s need.

A transfer switch is a modern, high-speed switching device designed to transfer electrical loads from a preferred power source to an alternate power source when voltage and or frequency varies from preset limits, and to re-transfer loads when the preferred source is restored.

Automatic transfer switches are critical components of an emergency or standby system. They are reliable, rugged, versatile, and compact assemblies for transferring essential loads and electrical distribution systems from one power source to another.

Brands

AMP Sizes

Zenith ZTG Transfer Switch
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ASCO Manual Transfer Switch

ASCO & ABB Transfer Switches

Global Power Supply provides reliable, sturdy, versatile and compact Automatic Transfer Switches that transfer essential loads and electrical distribution systems from one power source to another.

  • Available in sizes ranging from 200 AMP through 4000 AMP
  • Differentiated features that allow for ease of installation, integration, and operation.
  • Suitable for a wide array of industrial and commercial environments, from critical power processes to emergency standby applications.
  • We offer open transition, closed transition, and bypass isolation options.
  • Service Entrance Rated
  • 3-Pole & 4-Pole Transfer Switches
  • Manual Transfer Switches
  • Generator Transfer Switches

Preventative Maintenance

Proper installation is just as critical to ATS performance as ongoing maintenance. Global Power Supply’s Installation Services team handles site preparation, wiring, and commissioning for automatic transfer switches as part of a complete generator system installation, ensuring the switch integrates correctly with existing electrical infrastructure from day one.

Generator Transfer Switch
ABB Zenith ZTG Automatic Transfer Switch
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Types of Automatic Transfer Switches for Generator

CONTACTOR ATS is in many industries the standard and fully functional automatic transfer switch. Generally small and inexpensive, these ATS are compact and cost effective, these automatic transfer switches are simple to operate and offer the most flexible applications during momentary losses of power.

BREAKER BASED ATS offer robust options and features to meet the needs of your power requirements, with support for precise control and flexibility for applications that need continuous power during the transfer and routine test. If a user’s prime power goes down, Breaker Based Automatic Transfer Switches can be transferred from the load circuits to the standby power source manually, and restore primary power once it has been restored.

BYPASS ISOLATION SWITCH is engineered for applications where maintenance, inspection and testing must be performed while supplying continuous power to the load. These types of automatic transfer switches are necessary for data centers, critical life support systems and standby power scenarios that demand safe and routine system maintenance but can’t afford power disruptions.

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FAQs About Automatic Transfer Switches for Commercial Systems

Choosing and maintaining the right automatic transfer switch is critical to keeping your standby power system reliable. Below are answers to some of the most common questions facility managers, engineers, and contractors ask about ATS equipment, sizing, and service.

Below, we’ve answered some of the most common questions about Automatic Transfer Switches to help you make informed decisions.

What amperage sizes are available for automatic transfer switches?

Global Power Supply offers automatic transfer switches ranging from 200 AMP through 5000 AMP, covering applications from smaller commercial systems to large industrial and mission-critical installations.

What's the difference between a contactor-based, breaker-based, and bypass isolation transfer switch?

Contactor ATS units are compact, cost-effective, and commonly used for momentary power loss scenarios. Breaker-based ATS units offer more robust control and support continuous power during transfer and routine testing. Bypass isolation switches allow maintenance, inspection, and testing to be performed without interrupting power to the load, making them the standard choice for data centers and critical life support systems.

Why is preventative maintenance important for an automatic transfer switch?

Routine preventative maintenance helps ensure an ATS continues operating safely and reliably. It typically includes checking connections, inspecting for overheating or contact erosion, removing dust and debris, and replacing contacts as needed. Neglecting maintenance increases the risk of ATS failure, which can damage the generator and downstream equipment during an actual power event.

Does Global Power Supply install automatic transfer switches?

Yes. Global Power Supply provides installation services for automatic transfer switches, including site preparation, wiring, and commissioning, ensuring the switch is properly integrated with the rest of the generator and electrical system.

Which ATS brands does Global Power Supply carry?

Global Power Supply offers automatic transfer switches from multiple manufacturers, including Thomson, ABB, ASCO, Eaton, Cummins, and Generac, through a vendor-neutral sourcing model that allows equipment to be matched to the project rather than limited to a single product line.

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Gordon Andrews / Gordon Andrews Const

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PEROXYCHEM

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UPS Long-Term Rental for Peroxychem

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