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Square D PK2MB - Retaining Kit 2-Pole (QO Load Center)

Square D
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Square D PK2MB is a molded case circuit breaker retaining kit designed for securing backfed main breakers in QO series load centers. This 2-pole kit supports three-phase applications and includes a QO retainer with mounting hardware for safe, code-compliant installations. The kit measures 3.4 inches by 5.3 inches and weighs 0.019 lb, manufactured in the United States as part of the Powerpact family. It is UL Listed and CSA Certified for residential, commercial, and industrial use. Typical applications include securing main breakers in QO load centers for branch circuit protection.

Key Features & Specifications
  • Manufacturer: Schneider Electric
  • Item Subcategory: Molded Case
  • Family: Powerpact
  • Country of Origin: United States
  • Type: PK
  • Poles: 2
  • Phase: 3
  • Dimensions: 3.4 in x 5.3 in
  • Weight: 0.019 lb
  • Section: Misc. Kit
  • Part Number: PK2MB
  • Category: Circuit Breaker Accessory (Retaining Kit)
  • Mounting Type: Load Center (QO Series)
  • Series/Frame: QO
  • Certifications: UL Listed, CSA Certified
  • Application: For use with QO three phase main breaker load centers
  • Type: Retaining bracket kit
  • Includes: 1 QO retainer and mounting hardware


Product Identification
  • UPC: 078590180499
  • GTIN: 00785901804994