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Why shop with us
  • Shop with confidence knowing you’re getting genuine commercial-grade equipment.
  • Save more with our unbeatable prices and exclusive deals.
  • Rely on experts for fast, friendly support; experts in front of house, back of house and everything in between.
Additional Question? Ask an Expert

AllPoints CPHH18HA138 Width 3.85 Inch Commercial HVAC High Limit Switch

Other  |  MFG #: CPHH18HA138  |  Item #: 1454201
Item: #1454201

Technical details
Manufacturer Carrier
Model Number CPHH18HA138
Manufacturer Part # CPHH18HA138
Height 1"
Width 3.85"
Depth 4"
Weight 0.02 lbs
Hazardous False
Product Type OEM

About this item

Product Details

The Carrier CPHH18HA138 High Limit is a precision thermostatic safety device designed specifically for commercial HVAC control systems. Manufactured by Carrier, this OEM high limit switch ensures reliable operation within specified temperature thresholds, providing essential overheat protection for heating units and other HVAC assemblies. Its robust construction and exact temperature setpoint make it a critical component for maintaining system safety and efficiency in commercial building environments, especially in applications requiring precise thermal management with a maximum operating temperature of 1 inch height and 4-inch depth, wire terminals for easy integration, and a lightweight design of 0.02 lbs.

Top AllPoints High Limit CPHH18HA138 Features

The Carrier CPHH18HA138 High Limit ensures precise temperature control with a high-quality, durable design for commercial HVAC applications. Its compact form factor allows seamless integration into control panels and heating systems, with corrosion-resistant materials and easy disassembly for maintenance. Suitable for system safety cut-offs, it provides reliable thermal protection for HVAC units operating in varying environments, optimizing workflow and minimizing downtime.

  • Precise temperature cutoff: Ensures system safety and overheat prevention
  • Corrosion-resistant material: Extends durability in harsh environments
  • Hassle-free maintenance: Simplified disassembly and replacement
  • Compact OEM design: Fits tight control panel spaces efficiently
  • Reliable under thermal stress: Operates effectively at maximum 1-inch height and 4-inch depth

Ideal for HVAC system safety and thermal regulation in commercial settings.

AllPoints CPHH18HA138 Technical Specs

The Carrier CPHH18HA138 High Limit switch operates at a standard electrical requirement of minimal amperage with precise temperature activation, specifically engineered for OEM applications in commercial HVAC systems. Constructed from corrosion-resistant materials, it provides a maximum operating temperature of 1 inch in height and 4 inches in depth, weighing only 0.02 lbs for easy installation. The switch's sealed design offers reliable performance in environments with temperature fluctuations, and its wiring terminals facilitate straightforward integration into HVAC control circuits. The unit's lightweight, compact construction supports flexible placement within control panels, and its durable material composition ensures longevity under repeated thermal cycling. Maintenance involves simple disassembly for inspections or replacements, with no hazardous components involved, making it suitable for industrial and commercial HVAC safety controls.

  • Electrical Requirements: Minimal amperage, compatible with control panels
  • Construction & Finish: Corrosion-resistant, durable materials
  • Dimensions: 1\" height, 3.85\" width, 4\" depth
  • Weight: 0.02 lbs for easy handling and installation
  • Temperature Range: Accurate overheat cutoff at specified thermal thresholds
  • Food Safety & Maintenance: No hazardous materials, straightforward disassembly
  • Electrical compatibility: Suitable for standard HVAC control circuits
  • Wiring setup: Connects via threaded terminals for secure installation
  • Mounting method: Compatible with OEM control panel configurations
  • Thermal performance: Operates reliably within specified temperature limits
  • Environmental conditions: Designed for use in fluctuating climate settings

What is a commercial high limit switch?

A commercial high limit switch is a critical safety device used in HVAC and heating systems to prevent overheating by automatically disconnecting power when a preset temperature threshold is exceeded. The Carrier CPHH18HA138 High Limit is a high-precision OEM component designed for reliable thermal protection in industrial and commercial environments. It functions by sensing system temperature and providing an overheat shut-off to safeguard equipment and maintain operational safety. Commonly installed in control panels for water heaters, boilers, and other thermal systems, this switch supports sustained temperature regulation with exact cutoff points, ensuring system integrity during continuous operation and variable load conditions.

Top Commercial HVAC Safety Components for HVAC System Reliability

The Carrier CPHH18HA138 high limit switch offers robust thermal safety control, suitable for HVAC control panels and industrial heating systems. Manufactured by AllPoints, this switch supports consistent operation, reliability, and long service life in moderate-workload environments, fitting seamlessly into commercial HVAC safety applications.

  • Operation Type — for commercial HVAC safety control systems
  • Kitchen Type — compact control panels in commercial kitchens
  • Foodservice Category — safety components for industrial heating units
  • Workload Qualifier — ideal for moderate thermal cycling environments
  • Use Case — essential for overheat protection in heating systems

Why Choose AllPoints CPHH18HA138?

Designed to outperform standard high limit switches, the Carrier CPHH18HA138 combines precision, durability, and ease of integration. Its corrosion-resistant construction and compact OEM design enhance system safety, while its reliable thermal cutoff maintains uninterrupted operation. This switch's robust performance in varied environments minimizes downtime and ensures consistent HVAC protection, setting it apart from more generic safety devices.

  • Self-contained design: Easy to install in control panels
  • Enhanced durability: Made from corrosion-resistant materials
  • Size advantage: Compact footprint for tight spaces
  • Precision cutoff: Accurate thermal control at critical temperatures
  • Industrial reliability: Suitable for continuous moderate workloads

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AllPoints CPHH18HA138 Width 3.85 Inch Commercial HVAC High Limit Switch

$21.24

Carrier CPHH18HA138 High Limit