Square D QMB328W - Fusible Safety Switch 1200A@240V (200kA AIC, 3-Pole)

Square D QMB328W is a fusible safety switch designed for industrial power distribution systems requiring high-current protection. This panel-mounted unit features a 240V AC voltage rating and 1200A current capacity, with a 200kA interrupting rating at 240V for reliable fault protection. The rugged NEMA 1 enclosure houses three poles in a single configuration, constructed with Class R fuse compatibility for enhanced safety. Compliant with industrial standards, this switch is engineered for use in commercial facilities, manufacturing plants, and heavy equipment applications where robust circuit protection is critical.

Key Features & Specifications

• Type: Fusible safety switch, panel mount, QMB Series E1-E2
• Voltage Rating: 240V AC
• Current Rating: 1200A
• Configuration: Single
• Poles: 3
• Phase: 3-phase
• AIC Rating: 200kA@240V
• Fuse Class: R
• NEMA Rating: 1
• Compatible Frames: ED
• Weight: 125 lb
• Switch Style: Fusible
• Standards: Industrial safety compliance
• Applications: Industrial power distribution, manufacturing facilities, heavy equipment