Square D QMB366W - Fusible Safety Switch 600A (200kA AIC @ 480V)

Square D QMB366W is a heavy-duty fusible safety switch designed for reliable circuit isolation and protection in industrial power distribution systems. This 600A rated disconnect switch handles 600V AC/250V DC applications with a 200kA interrupting capacity at 480V, providing robust short-circuit protection. The unit features a compact 381mm depth design with NEMA 1 enclosure rating and weighs 39.92 lb, constructed for durable performance in demanding environments. Certified to NEMA KS1, UL, and CSA standards, this three-phase switch ensures compliance with industrial safety requirements. Typical applications include motor control centers, industrial machinery, and power distribution panels where Class R fuse protection and ED frame compatibility are essential.

Key Features & Specifications

• Type: Fusible safety disconnect switch, QMB Series E1-E2
• Voltage Rating: 600V AC/250V DC
• Current Rating: 600A
• Dimensions: 381 mm depth
• Weight: 39.92 lb
• Standards: NEMA KS1, UL, CSA
• Applications: Industrial power distribution, motor control centers, machinery protection
• Switch Type: Fusible safety disconnect
• Configuration: Single
• Poles: 3
• AIC rating: 200kA@480V
• Fuse Class: R
• Nema Rating: 1
• Phase: 3
• Compatible Frames: ED
• Country of Origin: United States

Product Identification

• UPC: 785901766995
• GTIN: 00785901766995