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Square D LA26300BC - Molded Case Breaker 300A 600V (2-Pole I-Line)

Square D
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The Square D LA26300BC is a 2-pole molded case circuit breaker from Schneider Electric's I-Line family, designed to provide thermal magnetic protection for electrical circuits. It is rated for 600V AC, 300A, and 30kA at 480V, with a 400A/LA frame size and LI (long-time and instantaneous) trip functions. This standard breaker measures 11 inches in height, 6 inches in width, and 5.84 inches in depth, weighing 7.19 lb, and features an I-Line style plug-in connection with lug terminals accepting wire sizes from 1 AWG (Al) to 250 MCM (Al) or 600 MCM (Cu). It is CSA certified and UL listed, compliant with industry standards for safety and performance. The unit is intended for use in I-Line panelboards, typically in commercial and industrial power distribution applications requiring single-phase, BC phase connection.

Key Features & Specifications
  • Type: Molded Case Circuit Breaker, Thermal Magnetic Protection, LI (Long-Time and Instantaneous) Functions
  • Voltage Rating: 600V AC
  • Current Rating: 300A
  • Dimensions: 11 in (279.4 mm) x 6 in (152.4 mm) x 5.84 in (148.34 mm) (Height x Width x Depth)
  • Standards: CSA Certified, UL Listed
  • Applications: Commercial and Industrial Power Distribution, I-Line Panelboards
  • Switch Type: Standard Breaker
  • Configuration: 2-Pole, Single Phase, BC Phase Connection
  • Coil Voltage Maximum: Not applicable
  • Temp Rating: Not specified
  • Shipping Dimensions: Not specified
  • Phase: 1
  • Voltage: 600V
  • Amperage: 300A
  • AIC rating: 30kA@480V
  • Connection: I-Line Style Plug-In
  • Poles: 2
  • Protection: Thermal Magnetic
  • Functions: LI - Long-Time and Instantaneous
  • Frame Size: 400A/LA
  • Trip Type: Thermal Magnetic
  • Panel Type: I Line Panelboards
  • Breaker Type: Standard
  • Control Voltage Minimum: Not applicable
  • Control Voltage Maximum: Not applicable
  • MCM Size: Min. Wire Size 1 AWG (Al) Max. Wire Size 250 MCM (Al), 600 MCM (Cu)
  • Metal Type: Not specified
  • Panel Style: I-Line
  • Bus Type: Not specified
  • Fuse Class: Not applicable
  • Insulation Temperature: Not specified
  • Inductance: Not applicable
  • Impedance: Not applicable
  • Barrels: Not applicable
  • Class Rating: Not specified
  • Diameter: Not applicable
  • Velocity: Not applicable
  • Clip Center: Not applicable
  • Clas: Not specified
  • Mounting: I-Line Plug-In
  • Hz: Not specified
  • Coil Material: Not applicable
  • Horse Power: Not specified
  • Aux Contacts: Not specified
  • CPT: Not specified
  • Full Load Amps: Not specified
  • Dist Voltage: Not specified
  • Bucket Size: Not applicable
  • Bucket Style: Not applicable
  • Bucket Type: Not applicable
  • Full Load Amp Maximum: Not specified
  • Full Load Amp Minimum: Not specified
  • Enclosure: Not specified
  • Relay Style: Not applicable
  • Coil Voltage Minimum: Not applicable
  • Wire: Not specified
  • Amperage Maximum: 300A
  • Amperage Minimum: Not specified
  • Nema Rating: Not specified
  • Switch Style: Standard
  • Wire Size: Min. 1 AWG (Al), Max. 250 MCM (Al) or 600 MCM (Cu)
  • Certification: CSA Certified, UL Listed
  • Circuit Breaker Mounting Style: I-Line Plug-In
  • Terminal Connection: Lug
  • Frequency Rating: Not specified
  • Phase Connection: BC
  • Standards: CSA Certified, UL Listed
  • Compatible Frames: 400A/LA
  • Installation Type: Plug-In
  • Item QTY: 1
  • Nema Starter Size: Not applicable
  • Breaker Frame: 400A/LA
  • Current Rating: 300A
  • Reverse Standoff Voltage: Not applicable
  • Watts: Not applicable
  • Peak Pulse Current: Not applicable
  • Breakdown Voltage (MIN VBR@IT ) (V): Not applicable
  • Breakdown Voltage (VBR@IT) (V): Not applicable
  • Polarity: Not applicable
  • Operating Temperature Maximum Celsius: Not specified
  • Max Clamp Voltage: Not applicable
  • On-State Current: Not applicable


Product Identification
  • UPC: 785901358428
  • GTIN: 00785901358428