Zinsco QSF4033 - Fusible Safety Switch 400A 3-Pole (240V AC)

Zinsco QSF4033 is a panel-mounted safety switch designed for industrial circuit protection and isolation in three-phase electrical systems. This 400A rated switch operates at 240V AC and features a robust fusible design with RK1/RK5 fuse compatibility for high-interrupting capacity protection. Constructed as a heavy-duty 200 lb unit with three-pole single configuration, it provides reliable disconnecting means for industrial power distribution. The switch meets industry standards for safety disconnects and is engineered for integration with ED frame compatible equipment. Typical applications include industrial machinery control, motor control centers, and main distribution panel disconnects where visible circuit isolation is required.

Key Features & Specifications

• Type: Panel-mounted safety switch, fusible design
• Voltage Rating: 240V AC
• Current Rating: 400A
• Configuration: Single
• Poles: 3
• Phase: 3-phase
• Switch Style: Fusible
• Fuse Class: RK1, RK5
• Compatible Frames: ED
• Weight: 200 lb
• Family: QSF Series
• Item Subcategory: Panel Mount