Square D QMB267W - Fusible Safety Switch 800A@600V (200kA AIC)

Square D QMB267W is a fusible panel-mounted safety switch designed for industrial power distribution systems requiring high-current protection. This 600V-rated switch handles 800A continuous current with a 200kA interrupting capacity at 480V, featuring a rugged NEMA 1 enclosure and single-configuration, 2-pole design for reliable circuit isolation. Constructed with Class R fuse compatibility and ED frame mounting, it meets stringent industrial safety standards for electrical distribution applications. Typical uses include motor control centers, service entrance equipment, and heavy machinery power management where robust circuit protection is critical.

Key Features & Specifications

• Type: Fusible safety switch, panel mount, QMB Series E1-E2
• Voltage Rating: 600V AC
• Current Rating: 800A
• Configuration: Single
• Poles: 2
• AIC Rating: 200kA@480V
• Fuse Class: R
• Compatible Frames: ED
• NEMA Rating: 1
• Phase: 1
• Weight: 125 lb
• Switch Style: Fusible
• Standards: Industrial electrical safety compliance
• Applications: Motor control centers, service entrance, heavy machinery