Square D QMB3240MJ - Fusible Safety Switch 400A@240V (200kA AIC, NEMA 1)
Square D QMB3240MJ Panel Mount Switch (Fusible) - Essential Electric Supply
Square D QMB3240MJ - Fusible Safety Switch 400A@240V (200kA AIC, NEMA 1)
Square D QMB3240MJ Panel Mount Switch (Fusible) - Essential Electric Supply

Square D QMB3240MJ - Fusible Safety Switch 400A@240V (200kA AIC, NEMA 1)

Square D
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Square D QMB3240MJ is a panel-mounted fusible safety switch designed for industrial power distribution protection. This 3-phase switch features a 240V voltage rating and 400A current capacity with a 200kA interrupting rating at 240V for robust short-circuit protection. The 65 lb NEMA 1-rated enclosure houses three J-class fuse poles in a single configuration, compatible with ED frames for flexible integration. UL-listed and built to industrial standards, it safeguards motor control centers and heavy machinery in demanding environments.

Key Features & Specifications
  • Type: QMB Saflex fusible safety switch, panel mount
  • Voltage Rating: 240V AC
  • Current Rating: 400A
  • Configuration: Single, 3-pole
  • AIC Rating: 200kA@240V
  • Fuse Class: J
  • Phase: 3
  • NEMA Rating: 1
  • Compatible Frames: ED
  • Weight: 65 lb
  • Standards: UL listed
  • Applications: Industrial power distribution, motor control centers