Description
York S1-025-38901-000 SPST Auto-Reset Limit Switch Overview
The York S1-025-38901-000 is a Single-Pole, Single-Throw (SPST) auto-reset limit switch engineered for reliable freeze protection and low-temperature safety control in York HVAC systems. With a precisely calibrated open setpoint of 55°F and an automatic reset close setpoint of 45°F, this switch provides dependable protection against coil freeze-up and low-temperature fault conditions in air handling units and related equipment.
Key Features
- SPST (Single-Pole, Single-Throw) switching configuration for straightforward circuit control
- Auto-reset (A/R) operation — automatically restores circuit once temperature rises above the 45°F close setpoint
- Opens at 55°F to interrupt the circuit and trigger a safety response
- Closes at 45°F to restore normal operation once safe temperature is reached
- OEM York replacement part — direct-fit compatibility for York equipment
- Designed for freeze protection and low-limit temperature safety applications
Specifications
- SKU: S1-025-38901-000
- Switch Type: SPST (Single-Pole, Single-Throw)
- Reset Type: Auto-Reset (A/R)
- Open Setpoint: 55°F
- Close Setpoint: 45°F
- Brand: York
Application
This limit switch is a genuine York OEM replacement component, ideal for use in York air handling units, fan coil systems, and other HVAC equipment requiring low-temperature freeze protection. The auto-reset function eliminates the need for manual intervention once operating temperatures return to the normal range, reducing service calls and downtime.
