Square D QMB2640MJ - Fusible Safety Switch 400A@600V (200kA AIC)
Square D QMB2640MJ Panel Mount Switch (Fusible) - Essential Electric Supply
Square D QMB2640MJ - Fusible Safety Switch 400A@600V (200kA AIC)
Square D QMB2640MJ Panel Mount Switch (Fusible) - Essential Electric Supply

Square D QMB2640MJ - Fusible Safety Switch 400A@600V (200kA AIC)

Square D
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Square D QMB2640MJ 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 Class J fuse compatibility. The single-configuration, 2-pole design weighs 65 lb and integrates with HED frames for standardized installations. UL-listed and compliant with industrial safety standards, it provides reliable circuit isolation in manufacturing plants, data centers, and heavy machinery applications.

Key Features & Specifications
  • Type: QMB Saflex fusible safety switch, panel mount
  • Voltage Rating: 600V AC
  • Current Rating: 400A
  • Dimensions: Standard HED frame compatible
  • Standards: UL listed, NEMA 1 enclosure
  • Applications: Industrial power distribution, machinery protection
  • Switch Type: Fusible safety switch
  • Configuration: Single
  • Poles: 2
  • AIC rating: 200kA@480V
  • Fuse Class: J
  • Phase: 1
  • Weight: 65 lb
  • Compatible Frames: HED