Square D QMB2640MJ - Fusible Safety Switch 400A@600V (200kA AIC)

Square D QMB2640MJ is a panel-mounted fusible safety switch designed for industrial power distribution protection. This 600V AC-rated switch handles 400A continuous current with a 200kA interrupting capacity at 480V, featuring a rugged NEMA 1 enclosure and Class J fuse compatibility. The single-configuration, 2-pole design weighs 65 lb and integrates with HED frames for standardized installations. UL-listed and compliant with industrial safety standards, it provides reliable circuit isolation in manufacturing plants, data centers, and heavy machinery applications.

Key Features & Specifications

• Type: QMB Saflex fusible safety switch, panel mount
• Voltage Rating: 600V AC
• Current Rating: 400A
• Dimensions: Standard HED frame compatible
• Standards: UL listed, NEMA 1 enclosure
• Applications: Industrial power distribution, machinery protection
• Switch Type: Fusible safety switch
• Configuration: Single
• Poles: 2
• AIC rating: 200kA@480V
• Fuse Class: J
• Phase: 1
• Weight: 65 lb
• Compatible Frames: HED