Square D D326NR - Fusible Disconnect Switch 600A 240V (NEMA 3R, 100kA AIC)

Square D D326NR is a heavy-duty disconnect switch designed for circuit protection and isolation in industrial power distribution systems. This 600A rated switch operates at 240V AC with a 100kA interrupting capacity, providing robust short-circuit protection in three-phase applications. The unit features a compact 25.13" x 8.88" x 49.13" (WxDxH) NEMA 3R enclosure constructed for harsh environments and accommodates wire sizes from AWG 4 to 500 Kcmil for both aluminum and copper conductors. UL listed certification ensures compliance with industry safety standards, while compatibility with RLF fuse frames and Class R fuses makes it suitable for motor control centers, industrial machinery, and power distribution panels requiring reliable circuit isolation and overload protection.

Key Features & Specifications

• Type: Fusible disconnect switch, Series E, Type D
• Voltage Rating: 240V AC
• Current Rating: 600A
• Dimensions: 25.13 in x 8.88 in x 49.13 in (WxDxH)
• Standards: UL listed
• Applications: Industrial power distribution, motor control centers, machinery isolation
• Switch Type: Disconnect
• Configuration: Single
• Phase: 3
• Poles: 3
• AIC rating: 100kA@240V
• Wire Size: AWG 4 to 500KCmil Aluminum/Copper
• Fuse Class: R
• Nema Rating: NEMA 3R
• Compatible Frames: RLF
• Weight: 53.07 lb
• Country of Origin: Canada

Product Identification

• UPC: 785901461661
• GTIN: 00785901461661