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Square D MAL26400 - 400A 2-Pole Molded Case Breaker

Square D
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Square D MAL26400 is a 2-pole molded case circuit breaker designed for thermal magnetic protection in industrial power distribution systems. It provides long-time and instantaneous (LI) trip functions with a 400A current rating and a maximum voltage rating of 600V, featuring a 30kA interrupting capacity at 480V. The unit weighs 40 lb, utilizes a feed-thru connection, and is built on an M Frame with a 1-phase configuration. It complies with industry standards for overcurrent protection in commercial and light industrial applications. This breaker is typically used for feeder circuits in panelboards and switchboards requiring reliable overload and short-circuit protection.

Key Features & Specifications
  • Type: MAL Series Molded Case Circuit Breaker
  • Voltage Rating: 600V
  • Current Rating: 400A
  • Dimensions: M Frame
  • Standards: UL, CSA
  • Applications: Feeder circuits in industrial panelboards and switchboards
  • Switch Type: Thermal Magnetic
  • Configuration: 2-Pole
  • Coil Voltage Maximum: Not applicable
  • Temp Rating: 40°C
  • Shipping Dimensions: 40 lb
  • Phase: 1
  • Voltage: 600V
  • Amperage: 400A
  • AIC rating: 30kA@480V
  • Connection: Feed-Thru
  • Poles: 2
  • Protection: Thermal Magnetic
  • Functions: LI - Long-Time and Instantaneous
  • Frame Size: M Frame
  • Trip Type: Thermal Magnetic
  • 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 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: Not specified
  • Hz: 50/60
  • 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: Not specified
  • Amperage Maximum: 400A
  • Amperage Minimum: Not specified
  • Nema Rating: Not specified
  • Switch Style: Not applicable
  • Wire Size: Not specified
  • Certification: UL, CSA
  • Circuit Breaker Mounting Style: Fixed
  • Terminal Connection: Feed-Thru
  • Frequency Rating: 50/60 Hz
  • Phase Connection: 1-Phase
  • Standards: UL 489, CSA C22.2
  • Compatible Frames: M Frame
  • Installation Type: Panelboard
  • 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: 40°C
  • Max Clamp Voltage: Not applicable
  • On-State Current: Not applicable


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