Industrial Line Voltage Thermostats

TEMPRO PRODUCTS

Industrial Line Voltage Thermostats

Tempro Industrial Line Voltage Thermostats are designed to regulate temperature in harsh industrial environments. Built for high-voltage systems, they control heating, cooling, and ventilation equipment in factories, warehouses, and equipment enclosures. Clear setpoints and durable construction make them a practical choice for on-site temperature control in demanding applications.

CUSTOM OPTIONS

A variety of custom options are available, including temperature ranges, sensing element lengths, & private branding, ensuring a tailored solution for your specific needs.

HIGH QUALITY

We take pride in quality control & reliable operation of our components. Each switch undergoes individual testing before leaving the factory, ensuring consistent performance & reliability.

CERTIFIED

Tempro products meet NEMA, UL, cUL, & N.E.C. 547 Ag-Ratings, ensuring they are built to withstand the demands of agricultural & outdoor applications.

STOCKED IN THE U.S.A.

Tempro products are designed & shipped from our facilities in Eau Claire, WI, reaching clients worldwide with reliable & efficient solutions.

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Product Details Cross Reference Common Applications Frequently Asked Questions Request For Quote

Tempro Industrial Line Voltage Thermostats are built for reliable performance in heating, cooling, & refrigeration systems across industrial environments. These thermostats are available with fixed or remote bulb sensors & are designed to control equipment directly in high-voltage applications, supporting precise temperature regulation in manufacturing facilities, process control rooms, & equipment enclosures.

All models meet NEMA 1 to 4X ratings, making them suitable for a range of indoor & outdoor environments, including corrosive or washdown areas. A broad temperature range from -30°F to +110°F allows for versatile use in extreme cold or heat. Clear Fahrenheit & Celsius scales are included on every unit, & prewired models are available for faster installation.

Product Features

  • Accurate temperature regulation
  • Units available for heating, cooling, & refrigeration applications
  • Fixed & remote bulb sensors with optional nickel-plated sensing elements
  • -30°F to 110°F temperature range with 2°F differential; adjustable differential available
  • Housing options: polymeric, steel, & stainless
  • Rated for NEMA 1, NEMA 2, NEMA 3R, & NEMA 4X
  • Single & two-stage models
  • Voltage range: 24VAC to 600VAC
  • Amperage: 16A / 22A
  • UL & cUL tested & approved


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Cross Reference

We’re confident in the performance of our Tempro Industrial Line Voltage Thermostats, which is why we’ve compared them to other leading products in the market. Built for high-voltage applications with rugged housing options & broad temperature control, Tempro thermostats are a strong fit for industrial heating, cooling, & refrigeration systems.

For a side-by-side comparison of how Tempro Industrial Line Voltage Thermostats measure up to competing models, view our cross-reference guide here.

BRANDS
Tempro

TP Series

Johnson Controls

A19 & A28 Series

TPI

KT Series

Honeywell

T405 & T605 Series

White Rodgers

1600 & 100 Series

-30°F to 110°F Temperature Range
Fixed or Remote Bulb Sensors
Fixed or Adjustable Differential
Heat & Cool
SPST & SPDT
24VAC to 600VAC
NEMA 1 & NEMA 4X Rated
Piggyback Plug Available
UL and cUL Certified

Common Applications

Industrial Line Voltage Thermostats are designed for both heating & cooling ventilation applications. They are used across a wide range of environments, including agricultural, industrial, indoor/outdoor, & commercial settings, providing reliable temperature control for demanding systems.

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Frequently Asked Questions

Your questions, answered.

I have a White Rodgers, Honeywell, TPI, Johnson Controls, or other manufacturer’s. NEMA 1 line voltage thermostat. Will yours work?

Yes! We offer direct replacement options from most of our competitors. Click here for a cross reference.

How do I wire my NEMA 1 thermostat?

The thermostat has three contact points. Most of our thermostats are wired for heating, unless specified otherwise. The red is your power – do not move this wire. The blue dot should be used for heating, and the yellow dot should be used for cooling. Click here for more information and illustrations.

What is a temperature differential?

When a switch changes states from open to closed. The difference between those two points is the differential, or hysteresis. Learn more about your line voltage thermostats differential here.

What’s a single stage vs. two stage thermostat?

Single stage thermostats are designed to control individual heating or cooling units independently. Two stage thermostats are designed to work with a heating or cooling system that operates at two levels, providing enhanced comfort and energy efficiency.

Can I switch from heating to cooling or vice versa?

Depending on the model chosen, you can change the function of the thermostat from heating to cooling or vice versa. Check out how here.

My thermostat isn’t powering my equipment, is it broken?

There are a few things you can test before calling one of our technical support reps. Go through this list, and if you are still experiencing issues, please contact us . 

What is a NEMA rating?

NEMA is described as “standards that are useful in defining the types of environments in which an electrical enclosure can be used.” Learn more about NEMA ratings here.

Can I use a NEMA 1 rated thermostats outdoors?

No, NEMA 1 is rated for indoor use only, as it only protects against dust, light and indirect splashing. If the thermostat will be installed in an outdoor environment, use a NEMA 4X rated model.

Do you offer customizable features or private branding on your industrial line voltage thermostats?

Yes – contact us here!

Uh oh! I lost my instruction manual. Can you send me a new one?

Download it here.

Request A Quote

Send our team your product specifications and/or application details below. One of our direct technical support team members will follow up within 1-2 business days.

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