Square D QMB3640MJB - Fusible Safety Switch 400A 600V (200kA AIC @480V)
Square D QMB3640MJB Panel Mount Switch (Fusible) - Essential Electric Supply
Square D QMB3640MJB - Fusible Safety Switch 400A 600V (200kA AIC @480V)
Square D QMB3640MJB Panel Mount Switch (Fusible) - Essential Electric Supply

Square D QMB3640MJB - Fusible Safety Switch 400A 600V (200kA AIC @480V)

Square D
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Square D QMB3640MJB is a fusible safety switch designed for industrial power distribution systems requiring high fault current protection. This 600V AC-rated switch handles 400A continuous current across 3 poles with a 200kA interrupting capacity at 480V, housed in a NEMA 1 enclosure weighing 65 lb. Its rugged panel-mount construction features J-class fuse compatibility and ED frame integration for robust circuit protection. Compliant with industrial safety standards, this QMB Saflex family switch is engineered for heavy-duty applications including motor control centers, manufacturing plants, and commercial power distribution panels.

Key Features & Specifications
  • Type: Fusible safety switch, panel mount, QMB Saflex family
  • Voltage Rating: 600V AC
  • Current Rating: 400A
  • Dimensions: NEMA 1 enclosure (specific dimensions not provided)
  • Standards: Industrial safety compliance (specific standards not provided)
  • Applications: Motor control centers, industrial power distribution
  • Switch Type: Fusible
  • Configuration: Single
  • Poles: 3
  • Phase: 3
  • AIC rating: 200kA@480V
  • Fuse Class: J
  • Weight: 65 lb
  • Compatible Frames: ED
  • Nema Rating: 1