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Square D LAL36300MB - 3-Pole 300A Thermal Magnetic Circuit Breaker

Square D
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Square D LAL36300MB is a 3-pole molded case circuit breaker from the LAL Series, designed for thermal magnetic protection against overloads and short circuits in commercial and industrial power distribution systems. It is rated for 300A at 600VAC and 250VDC, with an interrupting capacity of 30kA at 480VAC, and features a compact L Frame design with feed-thru lug connections for AWG 1 to 600 kcmil aluminum/copper wire. The breaker measures 11 in (279.4 mm) in height, 6 in (152.4 mm) in width, and 5.84 in (148.34 mm) in depth, weighs 16.4 lb, and includes a shorter handle for panel door clearance with push-to-trip functionality. It is certified to UL 489, CSA, and IEC standards, ensuring compliance with global safety requirements. This unit is suitable for main and branch circuit applications requiring reliable 3-phase, 300A protection in industrial environments.

Key Features & Specifications
  • Type: LAL
  • Family: LAL Series
  • Item Subcategory: Molded Case
  • Poles: 3
  • Current Rating: 300A
  • Voltage Rating: 600V
  • Phase: 3
  • Protection: Thermal Magnetic
  • Functions: Long Time and Instantaneous Trip
  • Frame Size: L Frame
  • Connection: Feed-Thru
  • Terminal Connection: Lug
  • Wire Size: AWG 1 to 600KCmil Aluminum/Copper - AWG 1 to 250KCmil Aluminum/Copper
  • AIC rating: 30kA@480V
  • Dimensions: 11 in (279.4 mm) x 6 in (152.4 mm) x 5.84 in (148.34 mm) (Height x Width x Depth)
  • Weight: 16.4 lb
  • Standards: CSA, UL Listed, IEC
  • Certification: CSA, UL Listed, IEC
  • Country of Origin: Mexico


Product Identification
  • UPC: 785901005537
  • GTIN: 00785901005537