Square D H366N Disconnect Switch (Fusible) - Essential Electric Supply
Square D H366N - Fusible Safety Switch 600A 600V (200kA AIC)
Square D H366N - Fusible Safety Switch 600A 600V (200kA AIC)
Square D H366N Disconnect Switch (Fusible) - Essential Electric Supply
Square D H366N - Fusible Safety Switch 600A 600V (200kA AIC)
Square D H366N - Fusible Safety Switch 600A 600V (200kA AIC)

Square D H366N - Fusible Safety Switch 600A 600V (200kA AIC)

Square D
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Square D H366N is a heavy-duty fusible safety switch designed for isolating and protecting three-phase electrical circuits up to 600A. It is rated for 600V AC systems and features a 200kA interrupting capacity at 600V for robust short-circuit protection. The switch is constructed with a NEMA 1 enclosure, measures 1276.35 mm H x 701.80 mm W x 257.30 mm D, and weighs 175.001 lb, utilizing Class R fuse compatibility and accepting 500 kcmil copper or 3/0 aluminum conductors. As a UL-listed component from the Series E family, it meets industry standards for safety disconnects in industrial power distribution, motor control centers, and large commercial service equipment.

Key Features & Specifications
  • Type: H-Type, Fusible Safety Disconnect Switch
  • Voltage Rating: 600V AC
  • Current Rating: 600A
  • Configuration: Single, 3-Pole
  • Dimensions: 1276.35 mm H x 701.80 mm W x 257.30 mm D (50.25 in x 27.63 in x 10.13 in)
  • Weight: 175.001 lb
  • Standards: UL Listed
  • Applications: Industrial power isolation, motor control, service entrance disconnects
  • Switch Style: Fusible
  • Phase: 3
  • AIC Rating: 200kA @ 600V
  • NEMA Rating: NEMA 1
  • Fuse Class: R
  • Wire Size: 500 kcmil (Copper) / AWG 3/0 (Aluminium)
  • Family: Series E


Product Identification
  • UPC: 785901451990
  • GTIN: 00785901451990