Square D QMB321 - Fusible Safety Switch 240V 3-Phase (30A, 200kA AIC)
Square D QMB321 Panel Mount Switch (Fusible) - Essential Electric Supply
Square D QMB321 - Fusible Safety Switch 240V 3-Phase (30A, 200kA AIC)
Square D QMB321 Panel Mount Switch (Fusible) - Essential Electric Supply

Square D QMB321 - Fusible Safety Switch 240V 3-Phase (30A, 200kA AIC)

Square D
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Square D QMB321 is a fusible safety switch designed for industrial power distribution protection. This 3-phase panel-mount switch features a 240V AC voltage rating with a 30A current capacity and 200kA interrupting rating at 240V for reliable circuit protection. The rugged NEMA 1 enclosure houses a single-configuration, 3-pole fusible switch mechanism compatible with HED frames, constructed with Class R, H, and K fuse compatibility. UL-listed and compliant with industrial safety standards, it's engineered for motor control centers, HVAC systems, and heavy equipment power management.

Key Features & Specifications
  • Type: Fusible safety switch, panel mount, QMB Series D2
  • Voltage Rating: 240V AC
  • Current Rating: 30A
  • Configuration: Single
  • Poles: 3
  • Phase: 3-phase
  • AIC Rating: 200kA @ 240V
  • Fuse Class: R, H, K compatible
  • NEMA Rating: 1
  • Compatible Frames: HED
  • Switch Style: Fusible
  • Weight: 30 lb