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Square D AR23 - Ambient Compensated Thermal Unit, Class 20

United Fuses
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Square D AR23 is an ambient compensated bimetallic thermal unit designed for motor overload protection in industrial motor circuits. This Class 20 device provides precise thermal protection with ambient temperature compensation to ensure reliable operation across varying environmental conditions. The unit weighs 22.5 lb and features robust construction for long service life in demanding applications. It is UL Listed and compliant with industry standards for motor protection. Typical applications include overload protection for motors controlled by Square D starters and contactors in manufacturing, processing, and other industrial environments.

Key Features & Specifications
  • Type: Ambient Compensated Bimetallic Thermal Unit
  • Class: 20
  • Application: Motor Overload Protection
  • Mounting Type: Compatible with Square D Motor Starters
  • Standards: UL Listed
  • Operating Temperature: Ambient Compensated
  • Weight: 22.5 lb
  • Country of Origin: USA


Part Number: AR23.0