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Square D LJL36400CU33X - Molded Case Circuit Breaker 400A 600V

Square D
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The Square D LJL36400CU33X is a 100% rated molded case circuit breaker from the Powerpact family, designed for primary overcurrent protection in industrial power distribution systems. This three-pole, 400A breaker operates at 600VAC with a solid-state trip unit providing LSI (Long-Time, Short-Time and Instantaneous) protection and an AIC rating of 65kA at 480V. Housed in an L Frame measuring 13.4 in x 5.5 in x 4.3 in (340 mm x 140 mm x 110 mm) and weighing 15 lb, it features feed-thru connections with lug terminals accepting 2 x AWG 2/0...500 kcmil aluminum/copper wire. The unit complies with UL, CSA, NEMA, NOM-003-SCFI-2000, and IEC 60947-2 standards, with a temperature rating of 28-158 °F (-2-70 °C). Typical applications include main or feeder protection in switchboards, panelboards, and industrial control panels requiring 100% rated continuous operation.

Key Features & Specifications
  • Type: Molded Case Circuit Breaker, Powerpact L Frame, Solid State Trip
  • Voltage Rating: 600V
  • Current Rating: 400A
  • 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, main or feeder protection
  • Switch Type: Molded Case
  • Configuration: 3 Pole, Feed-Thru
  • Coil Voltage Maximum: N/A (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: 400A
  • AIC rating: 65kA@480V
  • Connection: Feed-Thru
  • Poles: 3
  • Protection: Solid State (LSI)
  • Functions: Long-Time, Short-Time and Instantaneous
  • Frame Size: L Frame
  • Trip Type: Solid State
  • Panel Type: N/A
  • Breaker Type: 100% rated
  • Control Voltage Minimum: N/A
  • Control Voltage Maximum: N/A
  • MCM Size: 2/0...500 kcmil
  • Metal Type: N/A
  • Panel Style: N/A
  • Bus Type: N/A
  • Fuse Class: N/A
  • Insulation Temperature: N/A
  • Inductance: N/A
  • Impedance: N/A
  • Barrels: N/A
  • Class Rating: N/A
  • Diameter: N/A
  • Velocity: N/A
  • Clip Center: N/A
  • Clas: N/A
  • Mounting: N/A
  • Hz: N/A
  • Coil Material: N/A
  • Horse Power: N/A
  • Aux Contacts: N/A
  • CPT: N/A
  • Full Load Amps: N/A
  • Dist Voltage: N/A
  • Bucket Size: N/A
  • Bucket Style: N/A
  • Bucket Type: N/A
  • Full Load Amp Maximum: N/A
  • Full Load Amp Minimum: N/A
  • Enclosure: N/A
  • Relay Style: N/A
  • Coil Voltage Minimum: N/A
  • Wire: N/A
  • Amperage Maximum: 400A
  • Amperage Minimum: N/A
  • Nema Rating: N/A
  • Switch Style: N/A
  • Wire Size: 2 x AWG 2/0...500 kcmil
  • Certification: UL, CSA, NOM
  • Circuit Breaker Mounting Style: N/A
  • Terminal Connection: Lug
  • Frequency Rating: N/A
  • Phase Connection: 3 Phase
  • Standards: UL, CSA, NEMA, NOM-003-SCFI-2000, IEC 60947-2
  • Compatible Frames: L Frame
  • Installation Type: Fixed
  • Item QTY: 1
  • Nema Starter Size: N/A
  • Breaker Frame: L Frame
  • Current Rating: 400A
  • Reverse Standoff Voltage: N/A
  • Watts: N/A
  • Peak Pulse Current: N/A
  • Breakdown Voltage (MIN VBR@IT ) (V): N/A
  • Breakdown Voltage (VBR@IT) (V): N/A
  • Polarity: N/A
  • Operating Temperature Maximum Celsius: 70 °C
  • Max Clamp Voltage: N/A
  • On-State Current: N/A


Product Identification
  • UPC: 785901512677
  • GTIN: 00785901512677