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Square D LJA36600U31XTB - Molded Case Circuit Breaker 600A 600V

Square D
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The Square D LJA36600U31XTB is a 3-pole molded case circuit breaker from the Powerpact family, designed for solid-state overcurrent protection in industrial power distribution systems. It is rated for 600VAC at 600A with a 65kAIC interrupting capacity at 480VAC, supporting 3-phase applications. The unit features an L Frame size, measures 13.39 inches in height by 4.44 inches in width by 3.09 inches in depth, weighs 5.19 lb, and utilizes an I-Line style plug-in connection with lug terminals. It complies with UL, CSA, NEMA, NOM, and IEC standards, operating within a temperature range of 28 to 158°F (-2 to 70°C). This breaker is suitable for main or feeder protection in switchboards, panelboards, and motor control centers requiring long-time and instantaneous trip functions.

Key Features & Specifications
  • Type: Molded Case Circuit Breaker, Solid State Protection, I-Line Style Plug-In Connection
  • Voltage Rating: 600VAC
  • Current Rating: 600A
  • Dimensions: Height 13.39 in (340 mm) x Width 4.44 in (112.78 mm) x Depth 3.09 in (78.49 mm)
  • Standards: UL, CSA, NEMA, NOM, IEC
  • Applications: Industrial power distribution, switchboards, panelboards, motor control centers
  • Switch Type: Circuit Breaker
  • Configuration: 3-Pole, 3-Phase
  • Coil Voltage Maximum: Not applicable (solid state trip)
  • Temp Rating: 28-158 °F (-2-70 °C)
  • Shipping Dimensions: Not specified
  • Phase: 3
  • Voltage: 600V
  • Amperage: 600A
  • AIC rating: 65kAIC at 480VAC
  • Connection: I-Line Style Plug-In
  • Poles: 3
  • Protection: Solid State
  • Functions: Long Time and Instantaneous Trip
  • 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: Not specified
  • Metal Type: Not specified
  • Panel Style: Not specified
  • Bus Type: Not specified
  • 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: 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 specified
  • Bucket Style: Not specified
  • Bucket Type: Not specified
  • 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: 600A
  • Amperage Minimum: Not specified
  • Nema Rating: Not specified
  • Switch Style: Not specified
  • Wire Size: Not specified
  • Certification: UL, CSA, NEMA, NOM, IEC
  • Circuit Breaker Mounting Style: I-Line Plug-In
  • Terminal Connection: I-Line, Lug
  • Frequency Rating: Not specified
  • Phase Connection: 3-Phase
  • Standards: UL, CSA, NEMA, NOM, IEC
  • 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: Not available
  • GTIN: Not available