Square D QMB321J - Fusible Safety Switch 3P 30A (200kA AIC @240V)

Square D QMB321J is a fusible safety switch designed for industrial power distribution protection. This 3-pole panel-mounted switch features a 240V AC voltage rating and 30A current capacity with a 200kA interrupting rating at 240V for robust circuit protection. The rugged NEMA 1 enclosure houses Class J fuses in a single-configuration design compatible with ED frames, weighing 30 lb for secure installation. UL-listed and compliant with industrial safety standards, it's engineered for three-phase systems in manufacturing plants, data centers, and heavy machinery applications.

Key Features & Specifications

• Type: Fusible safety switch, panel-mounted, QMB Series D2
• Voltage Rating: 240V AC
• Current Rating: 30A
• Configuration: Single
• Poles: 3
• Phase: 3
• AIC Rating: 200kA@240V
• Fuse Class: J
• NEMA Rating: 1
• Compatible Frames: ED
• Switch Style: Fusible
• Weight: 30 lb
• Standards: UL listed
• Applications: Industrial power distribution, motor control, panel protection