Square D QSF4053 - Fusible Safety Switch 400A 3-Pole (600V RK1/RK5 Compatible)

Square D QSF4053 is a fusible safety switch designed for industrial power distribution systems requiring high-current protection. This 600V-rated panel-mount switch handles 400A loads across three poles with RK1/RK5 fuse compatibility for robust circuit protection. The 200 lb ED-frame unit features a single-configuration design with durable metal construction meeting industrial electrical standards. Typical applications include motor control centers, heavy machinery power feeds, and three-phase distribution panels where fusible disconnection is required.

Key Features & Specifications

• Type: Fusible safety switch, panel mount, metal enclosure
• Voltage Rating: 600V AC
• Current Rating: 400A
• Configuration: Single
• Poles: 3
• Phase: 3-phase
• Fuse Class: RK1, RK5 compatible
• Compatible Frames: ED series
• Weight: 200 lb
• Standards: Industrial electrical safety compliance
• Applications: Motor control centers, industrial power distribution

Product Identification

• GTIN: 00785901029274