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The APPLETON EH-38 is a preset thermostat designed for temperature control applications in commercial and industrial environments. Preset thermostats eliminate manual adjustment by holding a fixed setpoint, making them well suited for freeze protection, pipe tracing, and equipment compartment heating where consistent temperature limits are required. Licensed electricians and HVAC technicians are the primary trades that install and service this device. At 3 pounds, the EH-38 is a compact, handleable unit appropriate for panel or enclosure mounting.
The EH-38 is typically applied in industrial facilities, commercial buildings, and process environments where a non-adjustable setpoint thermostat is needed to maintain or protect against temperature extremes. Common install scenarios include electric heat trace systems, control panel thermal management, and enclosure heating applications where operator adjustment of the setpoint is not desired or permitted.
Designed as an OEM-style replacement or direct-install preset thermostat for commercial and industrial temperature control systems requiring a fixed-setpoint switching device.
Installation should be performed by a licensed electrician in accordance with applicable NEC requirements. Disconnect and lock out all power to the circuit before removing or installing the thermostat. Follow the manufacturer wiring diagram and verify that the load rating of the circuit does not exceed the device rating. Do not bypass the thermostat or operate the connected load without the thermostat properly wired and secured.
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