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Square D LA364001021 - Molded Case Breaker 400A 600V (I-Line)

Square D
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Square D LA364001021 is a 3-pole molded case circuit breaker from the I-Line family, designed for thermal magnetic protection in industrial power distribution systems. It is rated for 600V AC, 400A continuous current, with an AIC rating of 30kA at 480V, and includes a 120V shunt trip for remote switching. The unit measures 11 in (279.4 mm) x 6 in (152.4 mm) x 5.84 in (148.34 mm) (H x W x D), weighs 20 lb, and features an I-Line style plug-in connection for secure busbar mounting. It provides long time and instantaneous trip functions within an L Frame size, complying with applicable UL and NEMA standards for overcurrent protection. This breaker is suited for main or feeder protection in commercial and industrial switchboards, panelboards, and motor control centers.

Key Features & Specifications
  • Type: Molded Case Circuit Breaker, Thermal Magnetic, I-Line
  • Voltage Rating: 600V AC
  • Current Rating: 400A
  • 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: UL, NEMA
  • Applications: Main or feeder protection in switchboards, panelboards, motor control centers
  • Switch Type: Circuit Breaker
  • Configuration: 3-Pole
  • Coil Voltage Maximum: 120V AC (Shunt Trip)
  • Temp Rating: 40°C
  • Shipping Dimensions: 11 in x 6 in x 5.84 in
  • Phase: 3
  • Voltage: 600V
  • Amperage: 400A
  • AIC rating: 30kA@480V
  • Connection: I-Line Style Plug-In
  • Poles: 3
  • Protection: Thermal Magnetic
  • Functions: Long Time and Instantaneous Trip
  • Frame Size: L Frame
  • Trip Type: Thermal Magnetic
  • Panel Type: I-Line
  • Breaker Type: LA
  • Control Voltage Minimum: 120V AC
  • Control Voltage Maximum: 120V AC
  • MCM Size: Not specified
  • Metal Type: Not specified
  • Panel Style: I-Line
  • Bus Type: I-Line
  • Fuse Class: Not applicable
  • Insulation Temperature: Not specified
  • Inductance: Not specified
  • Impedance: Not specified
  • Barrels: Not specified
  • Class Rating: Not specified
  • Diameter: Not specified
  • Velocity: Not specified
  • Clip Center: Not specified
  • Clas: Not specified
  • Mounting: Plug-In
  • Hz: 50/60 Hz
  • Coil Material: Not specified
  • Horse Power: Not specified
  • Aux Contacts: Not specified
  • CPT: Not specified
  • Full Load Amps: 400A
  • Dist Voltage: Not specified
  • Bucket Size: Not specified
  • Bucket Style: Not specified
  • Bucket Type: Not specified
  • Full Load Amp Maximum: 400A
  • Full Load Amp Minimum: 400A
  • Enclosure: Not specified
  • Relay Style: Not specified
  • Coil Voltage Minimum: 120V AC
  • Wire: Not specified
  • Amperage Maximum: 400A
  • Amperage Minimum: 400A
  • Nema Rating: Not specified
  • Switch Style: Not specified
  • Wire Size: Not specified
  • Certification: UL, NEMA
  • Circuit Breaker Mounting Style: Plug-In
  • Terminal Connection: I-Line
  • Frequency Rating: 50/60 Hz
  • Phase Connection: 3-Phase
  • Standards: UL, NEMA
  • Compatible Frames: L Frame
  • Installation Type: Plug-In
  • Item QTY: 1
  • Nema Starter Size: Not specified
  • Breaker Frame: L Frame
  • Current Rating: 400A
  • Reverse Standoff Voltage: Not specified
  • Watts: Not specified
  • Peak Pulse Current: Not specified
  • Breakdown Voltage (MIN VBR@IT ) (V): Not specified
  • Breakdown Voltage (VBR@IT) (V): Not specified
  • Polarity: Not specified
  • Operating Temperature Maximum Celsius: 40°C
  • Max Clamp Voltage: Not specified
  • On-State Current: Not specified


Product Identification
  • UPC: 785901341987
  • GTIN: 00785901341987