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Square D LLD36400CU44X - Molded Case Breaker 400A 600V

Square D
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Square D LLD36400CU44X is a Powerpact molded case circuit breaker designed for primary overcurrent protection in industrial power distribution systems. This three-phase, 400A unit operates at a maximum voltage rating of 600V and delivers a high interrupting capacity of 100kA at 480V. The draw-out connection and solid-state trip unit provide LSIG protection functions (Long-Time, Short-Time, Instantaneous, and Ground Fault), with dimensions of 13.39 inches in height, 5.51 inches in width, and 4.33 inches in depth, weighing 20 lb. It complies with applicable industry standards for molded case circuit breakers in commercial and industrial environments. Typical applications include main or feeder protection in switchboards, motor control centers, and distribution panels requiring reliable, adjustable protection coordination.

Key Features & Specifications
  • Type: Powerpact LLD, Molded Case, Solid State Trip
  • Voltage Rating: 600V
  • Current Rating: 400A
  • Dimensions: Depth 4.33 in (110 mm) Width 5.51 in (140 mm) Height 13.39 in (340 mm)
  • Standards: Industry standard compliant
  • Applications: Industrial power distribution, switchboards, motor control centers
  • Switch Type: Draw-Out
  • Configuration: 3 Pole
  • Coil Voltage Maximum: Not specified
  • Temp Rating: Not specified
  • Shipping Dimensions: Not specified
  • Phase: 3
  • Voltage: 600V
  • Amperage: 400A
  • AIC rating: 100kA@480V
  • Connection: Draw-Out
  • Poles: 3
  • Protection: Solid State (LSIG)
  • Functions: LSIG - Long-Time, Short-Time, Instantaneous and Ground Fault
  • Frame Size: Not specified
  • Trip Type: Solid State
  • Panel Type: Not specified
  • Breaker Type: Molded Case
  • Control Voltage Minimum: Not specified
  • Control Voltage Maximum: Not specified
  • MCM Size: Not specified
  • Metal Type: Not specified
  • Panel Style: Not specified
  • Bus Type: Not specified
  • Fuse Class: Not specified
  • 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: Not specified
  • Hz: Not specified
  • Coil Material: Not specified
  • 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 specified
  • Coil Voltage Minimum: Not specified
  • Wire: Not specified
  • Amperage Maximum: 400A
  • Amperage Minimum: Not specified
  • Nema Rating: Not specified
  • Switch Style: Draw-Out
  • Wire Size: Not specified
  • Certification: Not specified
  • Circuit Breaker Mounting Style: Draw-Out
  • Terminal Connection: Not specified
  • Frequency Rating: Not specified
  • Phase Connection: 3 Phase
  • Standards: Not specified
  • Compatible Frames: Not specified
  • Installation Type: Draw-Out
  • Item QTY: 1
  • Nema Starter Size: Not specified
  • Breaker Frame: Not specified
  • 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: Not specified
  • Max Clamp Voltage: Not specified
  • On-State Current: Not specified


Product Identification
  • UPC: Not available
  • GTIN: Not available