Description
GENERAL
Thomson TS873A0800B1AY6DNKAA ā 800 Amp Service Entrance Rated Automatic Transfer Switch (ATS), Open Transition, 3-Phase, NEMA 3R Enclosure
The Thomson TS870 Series 800 Amp Automatic Transfer Switch offers reliable power control for commercial and industrial facilities that demand uninterrupted power delivery. This UL 1008-listed service entrance rated ATS simplifies installation by integrating the utility disconnect within the same enclosureāremoving the need for a separate upstream breaker.
Designed with durability and ease of operation in mind, this transfer switch features a weather-resistant NEMA 3R enclosure, making it ideal for both indoor and outdoor installations. The unit uses a TSC 7320 digital controller equipped with a 2.3ā backlit LCD screen, providing real-time monitoring of voltage, frequency, load status, and programmable alarms. This version includes a 2-wire dry contact for automatic generator start, allowing seamless integration with most standby generators.
With its open transition (break-before-make) functionality, the TS870 ensures safe transfer between power sources by avoiding out-of-phase connections. It supports 3-phase, 3-pole systems, and is capable of handling the full rated load with a short circuit withstand rating of 50,000A at 480V and 35,000A at 600V.
Key performance features include:
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800A continuous current rating
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Fully rated for 120ā600 VAC systems, 50/60Hz
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Solid neutral for grounded 4-wire configurations
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Seismically certified and compliant with NFPA 110 standards
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Front-access design for quick wiring and maintenance
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Advanced programmable inputs and outputs for custom control needs
This ATS is built to perform in high-demand environments such as healthcare facilities, industrial plants, water treatment stations, and commercial buildings where power continuity is mission-critical. Its robust construction, advanced control logic, and built-in service entrance capability make it a top-tier solution for critical power switching.
Part Number: TS873A0800B1AY6DNKAA
Enclosure: NEMA 3R | Controller: TSC 7320 | Voltage Range: 120ā600V
NOTE:
>Listing photos are representative and may not reflect exact model
>High voltage can harm or cause death. This switch should only be installed or serviced by a trained technician
