Square D QMB323J - Fusible Safety Switch 3-Pole (100A @ 240V 200kA AIC)

Square D QMB323J is a fusible safety switch designed for industrial power distribution systems requiring high fault current protection. This 3-pole panel-mounted switch features a 240V AC voltage rating and 100A current capacity with a 200kA interrupting rating at 240V for reliable circuit protection. The rugged NEMA 1 enclosure houses Class J fuses in a single-configuration design compatible with HHED frames, weighing 30 lb for stable panel integration. UL-listed and compliant with industrial safety standards, it's engineered for three-phase applications in manufacturing facilities, data centers, and heavy machinery power control.

Key Features & Specifications

• Type: Fusible safety switch with Class J fuse protection
• Voltage Rating: 240V AC
• Current Rating: 100A
• Configuration: Single
• Poles: 3
• Phase: 3
• AIC Rating: 200kA@240V
• Fuse Class: J
• NEMA Rating: 1
• Compatible Frames: HHED
• Switch Style: Fusible
• Weight: 30 lb
• Standards: UL listed
• Applications: Industrial power distribution, motor control centers, panelboards