Tpi CKT121 Industrial Thermostat Heat Only 40-110F

Product Description

The TPI CKT121 is a heat-only industrial thermostat designed for commercial and industrial heating applications where reliable temperature control is required across a wide operating range. It features a coiled bulb sensing element and ships with a 6-foot line cord for direct connection to heating equipment. The thermostat operates across a control range of 40 to 110 degrees F and accepts supply voltages from 125 to 277 volts, making it compatible with a broad range of single-phase heating circuits. A snap-acting switch mechanism provides positive on/off switching action. At 22 amps, it carries sufficient load capacity for most industrial electric heater applications. Licensed HVAC technicians and industrial electricians are the typical installers for this type of unit.

The CKT121 is suited for industrial and commercial heating installations such as unit heaters, cabinet heaters, duct heaters, and similar forced-air or radiant electric heating equipment. The wide voltage range of 125 to 277 volts allows use across standard 120-volt and 240/277-volt single-phase circuits commonly found in industrial facilities, warehouses, and commercial buildings. The coiled bulb sensing element is positioned to read ambient air temperature in the controlled space and signal the snap-acting switch to cycle the connected heating load on and off within the 40 to 110 degrees F setpoint range.

Key Features

• Heat-only control with snap-acting switch for positive on/off switching
• Wide control range of 40 to 110 degrees F suits cold-weather industrial environments
• Accepts 125 to 277 volts for compatibility with 120V and 240/277V single-phase circuits
• 22-amp capacity handles typical industrial electric heater loads
• Coiled bulb sensing element with 6-foot line cord for flexible installation positioning

Compatibility

Designed as an OEM-style replacement or direct-install thermostat for industrial and commercial electric heating equipment operating within the 125 to 277 volt, 22-amp, heat-only control range.

Installation Notes

Installation should be performed by a licensed electrician or qualified HVAC technician in accordance with the National Electrical Code (NEC) and all applicable local codes. De-energize the circuit at the breaker and verify zero voltage with a meter before making any wiring connections. Mount the thermostat in a location where the coiled bulb can sense representative space temperature, away from direct heat sources, drafts, or exterior walls that could cause false readings. Do not exceed the rated voltage or amperage for the device.