Ashcroft 93570 Temperature Switch 150-260F Rigid Stem

Product Description

The ASHCROFT 93570 is a watertight single setpoint temperature switch designed for industrial and mechanical systems requiring reliable high-temperature detection and control. Featuring a 4-inch rigid stem, this switch activates at a user-defined setpoint within a 150 to 260 degrees F range, making it suitable for process control, HVAC hydronic systems, and general mechanical equipment monitoring. The watertight enclosure provides protection against moisture ingress in demanding installation environments. Licensed HVAC technicians, plumbers, and industrial service professionals install this type of switch to trigger alarms, shut down equipment, or initiate control sequences when temperature thresholds are reached.

This temperature switch is well suited for residential and light commercial HVAC applications, hydronic heating systems, process piping, and boiler or heat exchanger monitoring. The rigid stem configuration allows direct immersion into a thermowell or piping fitting for accurate fluid temperature sensing. The single setpoint design keeps wiring and commissioning straightforward in standard control circuits.

Key Features

• Single setpoint operation with a temperature range of 150 to 260 degrees F
• 4-inch rigid stem for direct immersion or thermowell installation
• Watertight enclosure construction for moisture-resistant service
• Compact, single-unit package suitable for replacement or new installation

Compatibility

Designed as an OEM-style replacement or new-installation temperature switch for HVAC, hydronic, and process control systems requiring a rigid-stem single setpoint switch in the 150 to 260 degrees F operating range.

Installation Notes

Installation should be performed by a licensed HVAC technician or plumber familiar with control wiring and piping codes. De-energize all associated electrical circuits and isolate the piping section before removing or installing the switch. Verify the thermowell or fitting thread size and depth are compatible with the 4-inch rigid stem before seating the switch. Consult applicable NEC and IFGC or IPC guidelines for control-circuit wiring and piping penetration requirements.