Square D QMB363 - Fusible Safety Switch 600V/100A (3-Pole, 200kA AIC)

Square D QMB363 is a fusible safety switch designed for industrial power distribution systems requiring high fault current protection. This 600V AC-rated switch handles 100A continuous current across 3 poles with a 200kA interrupting capacity at 480V, housed in a NEMA 1-rated panel-mount enclosure weighing 30 lb. Its R/H/K-class fuse compatibility and HHED frame design meet stringent industrial safety standards, including UL and CSA certifications. The single-configuration switch is engineered for three-phase applications in manufacturing plants, data centers, and heavy machinery control panels where reliable circuit isolation is critical.

Key Features & Specifications

• Type: Fusible safety switch, panel mount, QMB Series D2
• Voltage Rating: 600V AC
• Current Rating: 100A
• Configuration: Single
• Poles: 3
• Phase: 3
• AIC Rating: 200kA@480V
• Fuse Class: R, H, K
• NEMA Rating: 1
• Compatible Frames: HHED
• Switch Style: Fusible
• Weight: 30 lb
• Standards: UL/CSA certified
• Applications: Industrial power distribution, motor control centers, HVAC systems