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Square D LLA36600U31X - Molded Case Circuit Breaker 600A 600V 3P

Square D
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Square D LLA36600U31X is a molded case circuit breaker designed for providing reliable overcurrent protection in demanding three-phase industrial power distribution systems. It features a solid-state trip unit with long-time and instantaneous (LI) protection functions, rated for 600A at 600V AC with an interrupting capacity of 100kA at 480V AC. The breaker is constructed with an L-frame size, measures 340 mm H x 140 mm W x 110 mm D, and utilizes a convenient I-Line style plug-in connection for conductors from 2/0 AWG to 500 kcmil. It complies with major industry standards including UL, CSA, NEMA, and IEC 60947-2, and is engineered for stable operation within an ambient temperature range of -2 to 70 °C. This breaker is typically applied in industrial panelboards, switchboards, and service entrance equipment requiring robust, high-capacity circuit protection.

Key Features & Specifications
  • Type: Molded Case Circuit Breaker, Solid State Trip Unit, I-Line Style Plug-In
  • Voltage Rating: 600V AC
  • Current Rating: 600A
  • Frame Size: L Frame
  • Poles: 3
  • Phase: 3-Phase
  • AIC Rating: 100kA @ 480V AC
  • Protection Functions: LI (Long-Time and Instantaneous)
  • Connection: Plug-In
  • Wire Size: 2 x AWG 2/0 to 500 kcmil (Aluminium/Copper)
  • Dimensions: 13.4 in H x 5.5 in W x 4.3 in D (340 mm x 140 mm x 110 mm)
  • Weight: 18.81 lb
  • Temp Rating: -2 to 70 °C (28 to 158 °F)
  • Standards & Certification: UL, CSA, NEMA, NOM-003-SCFI-2000, IEC 60947-2
  • Family: Powerpact
  • Country of Origin: Mexico


Product Identification
  • UPC: 785901986553
  • GTIN: 00785901986553