York S1-024-35799-000 Auxiliary Switch

The York S1-024-35799-000 Auxiliary Switch is a critical HVAC contactor accessory designed for field installation in compatible 1-pole and 2-pole contactor assemblies. Featuring a dual-contact configuration of 1 Normally Open (NO) and 1 Normally Closed (NC), this switch serves as a reliable interface for pilot duty signaling and control circuit interlocking. Often identified as 208T11 in technical cross-references, it provides precise feedback on the contactor's mechanical state, allowing technicians to integrate auxiliary loads such as status lights, dampers, or secondary safety switches directly into the control logic. Built with durable #6-32 screw terminals, it ensures secure vibration-resistant wire terminations under demanding cycle frequencies. This OEM York replacement part is engineered for a direct fit on specific system models like the J03ZFN04N2AZZ10003, maintaining the integrity of the original control sequence and preventing unauthorized bypasses in complex commercial HVAC control environments.

• Dual Contact Logic: Integrated 1NO/1NC contacts allow for simultaneous status monitoring and circuit interlocking without extra relays.
• OEM Compatibility: Specifically designed as a York S1-024-35799-000 replacement to ensure physical alignment and electrical timing with factory contactors.
• Industrial Build: Heavy-duty housing and robust internal mechanics handle high-cycle operation in industrial refrigeration and air conditioning applications.
• Secure Terminals: Standardized #6-32 screw connections eliminate loose connections and simplify wiring in tight control cabinets.

Is the York S1-024-35799-000 compatible with universal contactors?
This auxiliary contact block is specifically engineered for York-pattern contactors. Always verify the side-mount or top-mount clips against your specific HVAC contactor frame to ensure a snap-fit lock before wiring.

What is the typical use case for the 1NC contact in an HVAC system?
The normally closed contact is frequently used for electrical interlocking, ensuring that a secondary heating or cooling stage cannot engage while the primary contactor is active, or for triggering "Off" status indicators.

Can I use this switch for high-amperage motor loads?
No, this is an auxiliary switch designed for pilot duty and control signals. It should only be used within its rated current limits for signaling and low-draw control components.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.