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Square D LJA36600U53X - Molded Case Circuit Breaker 600A 600V

Square D
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The Square D LJA36600U53X, a Powerpact molded case circuit breaker from Schneider Electric, provides solid-state protection for industrial power distribution systems. This three-pole, 600A unit is rated for 600VAC and delivers an interrupting capacity of 65kA at 480VAC, with LSI (Long-Time, Short-Time, and Instantaneous) trip functions. The breaker measures 13.4 inches high by 5.5 inches wide by 4.3 inches deep, weighs 17 lb, and features an I-Line style plug-in connection with terminal lugs (AL600LS52K3) accepting 2 x AWG 2/0 to 500 kcmil aluminum or copper wire. It is certified to UL, CSA, NEMA, NOM-003-SCFI-2000, and IEC 60947-2 standards, operating within a temperature range of 28 to 158 °F (-2 to 70 °C). This L Frame breaker is designed for use in switchboards, panelboards, and motor control centers requiring reliable overcurrent protection in three-phase applications.

Key Features & Specifications
  • Type: Powerpact LJA Molded Case Circuit Breaker, Solid State
  • Voltage Rating: 600VAC
  • Current Rating: 600A
  • Dimensions: 13.4 in (340 mm) x 5.5 in (140 mm) x 4.3 in (110 mm) (Height x Width x Depth)
  • Standards: UL, CSA, NEMA, NOM-003-SCFI-2000, IEC 60947-2
  • Applications: Industrial power distribution, switchboards, panelboards, motor control centers
  • Switch Type: Molded Case
  • Configuration: 3 Pole
  • Coil Voltage Maximum: Not applicable (solid state trip)
  • Temp Rating: 28-158 °F (-2-70 °C)
  • Shipping Dimensions: 13.4 in x 5.5 in x 4.3 in
  • Phase: 3
  • Voltage: 600V
  • Amperage: 600A
  • AIC rating: 65kA@480V
  • Connection: I-Line Style Plug-In
  • Poles: 3
  • Protection: Solid State
  • Functions: LSI - Long-Time, Short-Time and Instantaneous
  • Frame Size: L Frame
  • Trip Type: Solid State
  • Panel Type: Not specified
  • Breaker Type: Molded Case
  • Control Voltage Minimum: Not applicable
  • Control Voltage Maximum: Not applicable
  • MCM Size: 2 x AWG 2/0...500 kcmil
  • Metal Type: Not specified
  • Panel Style: Not specified
  • Bus Type: Not specified
  • Fuse Class: Not applicable
  • Insulation Temperature: Not specified
  • Inductance: Not applicable
  • Impedance: Not applicable
  • Barrels: Not applicable
  • Class Rating: Not applicable
  • Diameter: Not applicable
  • Velocity: Not applicable
  • Clip Center: Not applicable
  • Clas: Not applicable
  • Mounting: I-Line Plug-In
  • Hz: 50/60 Hz
  • 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: 2 x AWG 2/0...500 kcmil
  • Amperage Maximum: 600A
  • Amperage Minimum: Not specified
  • Nema Rating: Not specified
  • Switch Style: Molded Case
  • Wire Size: 2 x AWG 2/0...500 kcmil
  • Certification: UL, CSA, NOM
  • Circuit Breaker Mounting Style: I-Line Plug-In
  • Terminal Connection: I-Line, Lug
  • Frequency Rating: 50/60 Hz
  • Phase Connection: 3
  • Standards: UL, CSA, NEMA, NOM-003-SCFI-2000, IEC 60947-2
  • Compatible Frames: L Frame
  • Installation Type: Plug-In
  • Item QTY: 1
  • Nema Starter Size: Not applicable
  • Breaker Frame: L Frame
  • Current Rating: 600A
  • Reverse Standoff Voltage: Not applicable
  • Watts: Not specified
  • 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: 70 °C
  • Max Clamp Voltage: Not applicable
  • On-State Current: Not applicable


Product Identification
  • UPC: 606486284424
  • GTIN: 03606490000000