YORK Limit Switch: Mfr Part # S1-3500-3121
SKU 3G-OTH-84311
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Frequently Asked Questions
What is the YORK S1-3500-3121 limit switch used for?
The YORK S1-3500-3121 limit control is a replacement HVACR safety switch that monitors temperature or pressure in heating and cooling systems. It helps prevent equipment damage by interrupting operation when conditions exceed safe limits, commonly used in commercial and industrial HVAC applications.
What are the specifications of the YORK S1-3500-3121 limit switch?
The YORK S1-3500-3121 is a limit control with manufacturer part number S1-3500-3121. It is designed as a replacement HVACR control switch for YORK equipment. For detailed electrical ratings or temperature/pressure ranges, consult the original equipment manual or contact 3G Electric.
Where to buy the YORK S1-3500-3121 limit switch worldwide?
3G Electric supplies the YORK S1-3500-3121 limit switch worldwide. As a global industrial distributor since 1990, we handle full logistics, customs clearance, and delivery to your location. Contact us for availability and lead time on this replacement HVACR control.
How to install the YORK S1-3500-3121 limit switch?
Install the YORK S1-3500-3121 limit switch by first disconnecting power to the HVAC system. Remove the old limit control, noting wiring connections. Mount the new switch in the same location, reconnect wires per the wiring diagram, and verify operation. Always follow local electrical codes and manufacturer guidelines.
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Common applications for YORKYORK Products
3G Electric supplies YORK replacement hvacr controls, switches & thermostats. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.











