Square D DU321RB - Non-Fusible Disconnect Switch 30A 240V 3-Pole (NEMA 3R 100kA AIC)

Square D DU321RB is a heavy-duty safety disconnect switch designed for reliable power isolation in industrial applications. This 3-pole, non-fusible disconnect operates at 240V AC with a 30A current rating and features a robust 100kA interrupting capacity at 240V for superior short-circuit protection. The switch is housed in a NEMA 3R rated enclosure measuring 7.75" W x 3.75" D x 9.63" H with a weight of 2.01 lb, constructed for durability in demanding environments. It carries UL certification and complies with industry safety standards for electrical disconnects. Typical applications include motor control centers, industrial machinery, and three-phase electrical systems requiring safe maintenance isolation.

Key Features & Specifications

• Type: Non-fusible safety disconnect switch, Series E family, DU type
• Voltage Rating: 240V AC
• Current Rating: 30A
• Dimensions: 7.75 in x 3.75 in x 9.63 in (WxDxH)
• Standards: UL listed, NEMA 3R rated
• Applications: Industrial machinery, motor control centers, three-phase systems
• Switch Type: Disconnect
• Configuration: Single
• Poles: 3
• AIC rating: 100kA@240V
• Switch Style: Non-Fusible
• Nema Rating: NEMA 3R
• Phase: 3
• Weight: 2.01 lb
• Certification: UL listed

Product Identification

• UPC: 785901491620
• GTIN: 00785901491620