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Square D RJA36120CU31A - 1200A Molded Case Breaker 600V

Square D
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Square D RJA36120CU31A is a 1200A molded case circuit breaker from Schneider Electric designed for overcurrent protection in industrial power distribution systems. It operates at 600VAC with a 65kA interrupting capacity at 480V and supports three-phase configurations. The unit measures 16.24 in x 16.54 in x 14.49 in (H x W x D), weighs 64 lb, and features a 1A/1B configuration with wire size accommodating 4 x AWG 3/0 to 600 kcmil aluminum/copper or 4 x AWG 3/0 to 500 kcmil copper. It complies with UL, CSA, NEMA, NMX J-266, and IEC 60947-2 standards, with UL, CSA, and NOM certifications. Typical applications include main or feeder protection in commercial and industrial switchboards, panelboards, and motor control centers.

Key Features & Specifications
  • Type: Molded Case Circuit Breaker
  • Voltage Rating: 600V
  • Current Rating: 1200A
  • Dimensions: 16.24 in (412.50 mm) x 16.54 in (420.12 mm) x 14.49 in (368.05 mm) (Height x Width x Depth)
  • Standards: UL, CSA, NEMA, NMX J-266, IEC 60947-2
  • Applications: Main or feeder protection in commercial and industrial switchboards, panelboards, and motor control centers
  • Configuration: 1A/1B
  • AIC rating: 65kA@480V
  • Phase: 3
  • Wire Size: 4 x AWG 3/0 to 600 kcmil aluminum/copper; 4 x AWG 3/0 to 500 kcmil copper
  • Certification: UL, CSA, NOM
  • Weight: 64 lb
  • Country of Origin: United States


Product Identification
  • UPC: 078590178883
  • GTIN: 00785901788836