Barksdale T2H-S251-A Temperature Switch 50-250F Spdt

Product Description

The BARKSDALE T2H-S251-A is a remote mount temperature switch designed for monitoring and control applications where precise thermal switching is required. It operates across a range of 50 to 250 degrees F using a capillary-style stem that allows the sensing element to be located away from the switch body. The switch features a dual set point SPDT contact form, making it suitable for both high- and low-temperature trip scenarios in a single unit. Licensed HVAC technicians, industrial controls technicians, and instrumentation professionals typically install this switch in process control, HVAC, and refrigeration monitoring systems.

This temperature switch is well suited for residential and light commercial HVAC applications as well as process control installations where remote sensing is necessary. The capillary design allows the sensing bulb to be positioned directly in the medium being monitored while the switch body mounts separately in a more accessible location. The copper capillary construction is compatible with common liquid and vapor sensing configurations. The dual set point SPDT output supports control logic requiring both make and break contacts at different temperature thresholds within the 50 to 250 degrees F span.

Key Features

• Temperature range of 50 to 250 degrees F with capillary remote sensing
• Dual set point SPDT contact form provides two independently adjustable switching points
• Copper capillary construction suited for typical HVAC and process sensing environments
• Remote mount configuration allows switch body placement away from high-heat or confined sensing locations
• Compact switch body measuring 7.69 inches tall, 3.38 inches wide, and 3.75 inches long

Compatibility

Designed as an OEM-style replacement or new-installation remote mount temperature switch for HVAC, refrigeration, and process control systems requiring capillary-type thermal switching in the 50 to 250 degrees F range.

Installation Notes

Installation should be performed by a qualified HVAC or instrumentation technician familiar with low-voltage control wiring and applicable NEC requirements. Disconnect and lock out all power to the control circuit before removing or installing the switch. Route and secure the capillary carefully to avoid kinks or sharp bends that can damage the sensing element. Verify both set point adjustments after installation before returning the system to service.