Square D QMB2640M - Fusible Safety Switch 400A@600V (200kA AIC)

Square D QMB2640M is a panel-mounted fusible safety switch designed for industrial power distribution protection. This 600V AC-rated switch features a 400A current capacity with a 200kA interrupting rating at 480V, housed in a NEMA 1 enclosure weighing 65 lb. Constructed with Class R fuse compatibility and a single-configuration, 2-pole design, it meets industry standards for electrical safety. The QMB Saflex series switch is engineered for HED frame compatibility, making it suitable for heavy-duty motor control and main disconnect applications in commercial/industrial facilities.

Key Features & Specifications

• Type: Panel-mounted fusible safety switch (QMB Saflex series)
• Voltage Rating: 600V AC
• Current Rating: 400A
• Configuration: Single
• Poles: 2
• AIC Rating: 200kA@480V
• Fuse Class: R
• NEMA Rating: 1
• Phase: 1
• Compatible Frames: HED
• Weight: 65 lb
• Switch Style: Fusible