Square D MAL36400 — 400A 3-Pole 600V Molded Case Circuit Breaker

The Square D MAL36400 is a 400-amp, 3-pole, 600V PowerPact M-Frame molded case circuit breaker. Designed for heavy-duty commercial and industrial power distribution, the MAL series delivers 65 kAIC interrupting capacity and reliable thermal-magnetic protection. Suitable for use in Square D switchboards and motor control centers. UL 489 listed.

MAL36400 Specifications

SpecificationValue
Amperage400A
Poles3
Voltage600V
Interrupt Rating42kA @ 240VAC / 30kA @ 480VAC / 22kA @ 600VAC / 14kA @ 250VDC
Frame SizeM-Frame (800A Frame)
Mounting TypeFixed
Trip TypeThermal Magnetic
Trip FunctionLI — Long-Time, Instantaneous
Wire SizePer NEC Table 310.16
Phase3-Phase
StandardsUL 489, CSA C22.2 No. 5, IEC 60947-2, NEMA AB 1
Temperature Rating40°C

Key Features

  • 400A continuous current rating
  • 3-pole, 600V AC
  • 65 kAIC interrupting rating
  • Thermal-magnetic trip mechanism
  • Heavy-duty industrial construction
  • UL 489 listed

Applications

  • Industrial power distribution
  • Switchboard feeders
  • Motor control center main breakers
  • Large commercial buildings

Buy MAL36400 Circuit Breaker

Square D PowerPact MAL M-Frame 400A 3-pole circuit breaker. In stock at AllBreakerSales.com. Call (877) 611-0034 for same-day pricing. Genuine OEM parts, ships from US warehouse.

Brand: Square D | Series: PowerPact MAL M-Frame | Catalog Number: MAL36400

Home | All Circuit Breakers | Shop by Brand | All Square D Breakers | Cross-Reference | Safety Switches | Blog | Resources | Locations | We Buy Breakers | Breaker Finder | Compare | About Us | Contact | Get a Quote