Tempro’s Two-Stage Line Voltage Thermostats for Heating are built to precisely regulate temperatures in industrial and commercial heating systems. Designed for durability, these thermostats are housed in sturdy steel or stainless-steel NEMA 1 rated enclosures, or NEMA 4X rated enclosures, providing protection from dust, light exposure, minor splashing and wash down environments. They are well-suited for standard indoor or outdoor applications.

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Key Features and Construction

Tempro’s two-stage heating thermostats, come with fixed bulb sensors that deliver reliable and consistent performance. The durable construction ensures longevity, even in demanding environments, while providing straightforward temperature control.

How the Two-Stage Line Voltage Thermostats for Heating Works

The SPDT/SPDT configuration controls the two heating stages effectively. Here’s a breakdown of the process:

  1. Engaging the First Stage: As the ambient temperature drops to the set knob position, the high-temperature switch activates. This connection makes contact between the Red-Brown wire or Blue dot and Yellow dot points, turning on the first stage of heating.
  2. Activating the Second Stage: If the temperature continues to fall by approximately 3°F, the low-temperature switch engages. This action establishes contact between the Red-Blue points, triggering the second stage of heating. This sequential heating ensures optimal energy use and maintains a comfortable environment even as temperatures fluctuate.

For reference, Figure 7 to the right in the manual illustrates the typical wiring setup for SPDT/SPDT units, showing how each stage is activated based on temperature changes.

Product Specifications

  • Temperature Range: Supports a broad range from 30°F to 110°F, with a fixed differential of +/- 2°F to ensure consistent operation.
  • Sensor Type: Equipped with a fixed bulb sensor for accurate temperature detection.
  • Customization: Private labeling options are available for companies needing branded thermostat solutions.

Applications for Two-Stage Line Voltage Thermostats for Heating

Tempro thermostats are widely used in:

  • Commercial Heating Systems: Provides precise temperature control to maintain comfortable conditions in large buildings.
  • Industrial Environments: Manages multi-stage heating in settings where temperature regulation is critical for safety and efficiency.
  • Refrigeration and Cooling Systems: Can be integrated into systems that require controlled heating to balance refrigeration needs.

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Thermostats & Guards

Tempro offers line voltage thermostats & guards commonly found in commercial, industrial and agricultural settings.

Custom Options

Variety of custom options available in both thermostats & guards, such as, temperature ranges, materials, size & private branding.

Certified

Tempro products meet NEMA, UL, cUL & NEC 457 Ag-ratings.

High Quality

We take pride in quality control & reliable operation of our components. Every switch is individually tested before it leaves the plant.

Stocked in the U.S.A.

Products are designed & shipped from our facilities in Eau Claire, WI to clients across the globe.