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Square D KC11143 - Under Voltage Release 24V (Breaker Accessory)

Square D
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Square D KC11143 is an Under Voltage Release accessory designed to automatically trip a circuit breaker when control voltage drops below a safe threshold, protecting downstream equipment from damage. It operates on a 24V control circuit and is engineered for use with Square D molded case circuit breakers. This compact accessory weighs 2 lb and is compatible with KC, KCF, KCL, KCP, KI, KIF, KIL, and KIP frame types. It is commonly applied in industrial and commercial electrical systems where voltage stability is critical for operational safety.

Key Features & Specifications
  • Manufacturer: Square D
  • Item Subcategory: Under Voltage Release
  • Family: Square D Series
  • Type: KC
  • Weight: 2 lb
  • Control Voltage Minimum: 24
  • Control Voltage Maximum: 24
  • Compatible Frames: KC, KCF, KCL, KCP, KI, KIF, KIL, KIP
  • Part Number: KC11143
  • Mounting Type: Breaker Accessory
  • Application: Molded Case Circuit Breakers
  • Function: Voltage Protection