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Square D MJM36400 - Molded Case 400A 600V 3-Pole

Square D
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The Square D MJM36400 is a 3-pole molded case circuit breaker from the Powerpact family, designed for primary overcurrent protection in industrial power distribution systems. It is rated for 600V AC, 400A continuous current, and provides solid-state LI (Long-Time and Instantaneous) trip protection with a 65kA interrupting capacity at 480V. This bolt-on unit features an M Frame construction, measures 12.86 inches in height, 8.27 inches in width, and 8.05 inches in depth, weighing 29 lb, and is manufactured by Schneider Electric in the United States. It complies with applicable UL and NEMA standards for industrial circuit protection. Typical applications include main or feeder protection in switchboards, panelboards, and motor control centers within commercial and industrial facilities.

Key Features & Specifications
  • Type: Molded Case Circuit Breaker, Solid State Trip
  • Voltage Rating: 600V AC
  • Current Rating: 400A
  • Dimensions: Height 12.86 in (326.64 mm), Width 8.27 in (210.06 mm), Depth 8.05 in (204.47 mm)
  • Standards: UL, NEMA
  • Applications: Industrial power distribution, switchboards, panelboards, motor control centers
  • Switch Type: Bolt-On
  • Configuration: 3-Phase, 3-Pole
  • Coil Voltage Maximum: Not applicable (solid state)
  • Temp Rating: Not specified
  • Shipping Dimensions: Not specified
  • Phase: 3
  • Voltage: 600V
  • Amperage: 400A
  • AIC rating: 65kA@480V
  • Connection: Bolt-On
  • Poles: 3
  • Protection: Solid State, LI (Long-Time and Instantaneous)
  • Functions: LI - Long-Time and Instantaneous
  • Frame Size: M Frame
  • Trip Type: Solid State
  • Panel Type: Not specified
  • Breaker Type: Powerpact
  • 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: Bolt-On
  • 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: 400A
  • Amperage Minimum: Not specified
  • Nema Rating: Not specified
  • Switch Style: Not specified
  • Wire Size: Not specified
  • Certification: Not specified
  • Circuit Breaker Mounting Style: Bolt-On
  • Terminal Connection: Bolt-On
  • Frequency Rating: Not specified
  • Phase Connection: 3-Phase
  • Standards: UL, NEMA
  • Compatible Frames: M Frame
  • Installation Type: Fixed
  • Item QTY: 1
  • Nema Starter Size: Not applicable
  • Breaker Frame: M Frame
  • Current Rating: 400A
  • 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: Not specified
  • Max Clamp Voltage: Not applicable
  • On-State Current: Not applicable


Product Identification
  • GTIN: 03606486293423