Square D QMB3660J - Fusible Safety Switch 600A (200kA AIC @480V)

Square D QMB3660J is a panel-mounted fusible safety switch designed for high-current industrial power distribution protection. This 600VAC-rated switch features a 600A current capacity with a 200kA interrupting rating at 480V, housed in a NEMA 1 enclosure weighing 38 lb. Its 3-pole single-configuration design with Class J fuses meets rigorous industrial safety standards for circuit isolation. The QMB Saflex series switch is engineered for heavy-duty applications including motor control centers, switchgear, and industrial power distribution panels where reliable circuit protection is critical.

Key Features & Specifications

• Type: Fusible safety switch, panel mount, 3-pole single configuration
• Voltage Rating: 600V AC
• Current Rating: 600A
• Dimensions: Compatible with ED frames
• Standards: NEMA 1 enclosure rating
• Applications: Industrial power distribution, motor control centers
• Switch Type: Fusible
• Configuration: Single
• Poles: 3
• AIC rating: 200kA@480V
• Phase: 3
• Fuse Class: J
• Weight: 38 lb