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Value Brand

Value Brand Adjustable Limit Auto Reset 115-175 HVAC Control

SKU CH-7TZH-R377W

Adjustable HVAC limit controller opens on temperature rise from 115 to 175 °F and auto-resets for 120 or 240 V AC systems

  • Automatically resets after opening at 135°F or 175°F
  • Adjustable limit control covers 115°F to 175°F range
  • SPST contacts open on temperature rise for safety
  • Compatible with 120V AC and 240V AC systems
  • Surface mount design with 2 in by 1 3/4 in base

Adjustable Limit Controller for HVAC

The Value Brand Adjustable Limit Auto Reset control provides temperature monitoring for HVAC systems. It operates as a surface-mounted SPST switch that opens on temperature rise and resets automatically. The unit accepts 120V AC or 240V AC input voltage for compatible installations.

Replaces fixed-temperature limit switches

This adjustable model replaces fixed-temperature limit controls when variable set points are required. The jump is worth it when the application demands opening temperatures between 135 and 175 Degrees F and closing temperatures between 115 and 155 Degrees F. It suits technicians who need field-adjustable protection without stocking multiple fixed units.

Practical limits of SPST automatic reset

The SPST contact form provides single-circuit interruption only, so it cannot control multiple independent loads. Automatic reset restores the circuit once temperature falls to the closing set point, which may not suit systems requiring manual lockout for safety inspection. The fixed adjustment range of 115 to 175 Degrees F limits use outside this window.

Highlights

  • Automatically resets after opening at 135°F or 175°F
  • Adjustable limit control covers 115°F to 175°F range
  • SPST contacts open on temperature rise for safety
  • Compatible with 120V AC and 240V AC systems
  • Surface mount design with 2 in by 1 3/4 in base

Specifications

BrandZORO SELECT

Questions about this item

What are the mounting base dimensions for this HVAC control?

The mounting base measures 2 inches in length and 1 3/4 inches in width for surface mounting.

How is the switch wired and what is the automatic reset behavior?

Wire the SPST contacts in series with the load at 120V or 240V AC; the switch opens on temperature rise at 135°F or 175°F and automatically resets when temperature falls to 115°F or 155°F.

What are the fixed opening and closing temperature points for this limit controller?

The switch opens at 135°F and 175°F, then automatically closes again at 115°F and 155°F respectively.

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