Square D QMB325W - Fusible Safety Switch 400A (240V AC, 200kA AIC)

Square D QMB325W is a fusible safety switch designed for industrial power distribution protection. This 400A rated switch operates at 240V AC with a 200kA interrupting capacity, providing robust circuit protection in three-phase systems. The panel-mounted unit features a compact 381mm depth design with NEMA 1 enclosure rating and accommodates 3/0 AWG to 600 kcmil wiring. Certified to UL, CSA, and NEMA KS1 standards, this switch ensures reliable performance in industrial environments including manufacturing facilities and power distribution centers where high-current circuit protection is required.

Key Features & Specifications

• Type: Fusible safety switch, panel mount
• Voltage Rating: 240V AC
• Current Rating: 400A
• Dimensions: 381mm depth
• Weight: 39.92 lb
• Standards: UL, CSA, NEMA KS1
• Applications: Industrial power distribution, manufacturing facilities
• Switch Type: Fusible
• Configuration: Single
• Poles: 3
• Phase: 3-phase
• AIC Rating: 200kA @ 240V
• Wire Size: 3/0 AWG - 600 kcmil
• Fuse Class: R
• NEMA Rating: 1
• Compatible Frames: ED
• Country of Origin: United States
• Family: QMB Series E1-E2

Product Identification

• UPC: 785901766858
• GTIN: 00785901766858