Square D DU321 - Non-Fusible Disconnect Switch 30A 3-Pole (100kA AIC @ 240V)

Square D DU321 is a heavy-duty disconnect switch designed for reliable circuit isolation and safety in industrial power distribution systems. This UL-listed device provides 240V AC voltage rating with 30A current capacity and features a robust 3-pole configuration for three-phase applications. Constructed with NEMA 1 enclosure protection and measuring 7.25" x 3.63" x 9.25" (WxDxH), the non-fusible switch delivers exceptional interrupting capacity of 100kA at 240V. Engineered to meet rigorous industrial standards, this Series E disconnect ensures safe operation in commercial and industrial environments where dependable circuit isolation is critical for maintenance and emergency shutdown procedures.

Key Features & Specifications

• Type: Non-fusible disconnect switch, Series E family
• Voltage Rating: 240V AC
• Current Rating: 30A
• Dimensions: 7.25 in x 3.63 in x 9.25 in (WxDxH)
• Standards: UL listed
• Applications: Industrial power distribution, circuit isolation
• Switch Type: Disconnect
• Configuration: Single
• Poles: 3
• AIC rating: 100kA@240V
• Switch Style: Non-Fusible
• Nema Rating: NEMA 1
• Phase: 3
• Weight: 1.93 lb
• Mounting: Standard industrial
• Enclosure: NEMA 1 rated
• Certification: UL listed

Product Identification

• UPC: 785901491606
• GTIN: 00785901491606