Square D QMB3640MJ - Fusible Safety Switch 400A@600V (200kA AIC, NEMA 1)
Square D QMB3640MJ Panel Mount Switch (Fusible) - Essential Electric Supply
Square D QMB3640MJ - Fusible Safety Switch 400A@600V (200kA AIC, NEMA 1)
Square D QMB3640MJ Panel Mount Switch (Fusible) - Essential Electric Supply

Square D QMB3640MJ - Fusible Safety Switch 400A@600V (200kA AIC, NEMA 1)

Square D
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Square D QMB3640MJ is a panel-mounted fusible safety switch designed for industrial power distribution protection. This 600V AC-rated switch handles 400A continuous current with a 200kA interrupting capacity at 480V, featuring a rugged NEMA 1 enclosure and three-pole single-configuration design. The QMB Saflex family unit weighs 65 lb and complies with Class J fuse standards for reliable circuit protection. Its ED frame compatibility makes it suitable for demanding applications including motor control centers, industrial machinery, and high-capacity electrical distribution systems.

Key Features & Specifications
  • Type: QMB Saflex fusible safety switch, panel mount
  • Voltage Rating: 600V AC
  • Current Rating: 400A
  • Dimensions: NEMA 1 enclosure
  • Standards: Class J fuse compliant
  • Applications: Industrial power distribution, motor control centers
  • Switch Type: Fusible
  • Configuration: Single
  • Poles: 3
  • Phase: 3
  • AIC rating: 200kA@480V
  • Compatible Frames: ED
  • Weight: 65 lb