Square D QMB363J - Fusible Safety Switch 600V/100A (3-Pole NEMA 1)

Square D QMB363J is a fusible safety switch designed for industrial power distribution protection. This 600V AC-rated switch handles 100A continuous current with a 200kA interrupting capacity at 480V, featuring a rugged NEMA 1 enclosure and three-pole single-throw configuration. Constructed with Class J fuses and compatible with HHED frames, it meets stringent industrial safety standards for three-phase systems. The panel-mounted unit weighs 30 lb, providing reliable circuit isolation in manufacturing plants, data centers, and heavy machinery applications.

Key Features & Specifications

• Type: Fusible safety switch, panel mount, QMB Series D2
• Voltage Rating: 600V AC
• Current Rating: 100A
• Configuration: Single throw
• Poles: 3
• AIC Rating: 200kA@480V
• Fuse Class: J
• NEMA Rating: 1
• Phase: 3
• Compatible Frames: HHED
• Weight: 30 lb
• Standards: Industrial safety compliance
• Applications: Power distribution, motor control, industrial equipment