Square D 7DN Adjustable Roller Lever Limit Switch

Product Description

The SQUARE D 7DN is an adjustable roller lever designed as an actuator accessory for industrial and commercial limit switches. The lever arm adjusts from 1.38 to 3.38 inches in length, allowing precise actuation point positioning without replacing the entire actuator assembly. The body is cast zinc for durability in industrial environments, and the roller is nylon construction with a 1/4 inch face width and 1/4 inch diameter. Electricians and automation technicians install this lever when replacing a worn actuator or when repositioning the actuation point on an existing limit switch installation.

The 7DN is suited for use with compatible limit switches in manufacturing, conveyor, and machine control applications where a mechanically operated limit switch requires an adjustable roller lever actuator. The adjustable arm length makes it practical for installations where the triggering cam or dog has a fixed position that does not align with a fixed-length lever. It is appropriate for both new installations and field replacement of damaged or worn roller levers on existing limit switch bodies.

Key Features

• Adjustable arm length from 1.38 to 3.38 inches for flexible actuation point positioning
• Cast zinc body for durability in industrial service environments
• Nylon roller with 1/4 inch face width and 1/4 inch diameter
• Designed as a replacement or upgrade actuator for compatible limit switches
• Sold individually, quantity of one per package

Compatibility

Designed for use with limit switches as a replacement or accessory roller lever actuator. No specific compatible model numbers were provided in the product data. Verify fitment against the target limit switch body before ordering.

Installation Notes

Installation is typically performed by a licensed electrician or qualified maintenance technician. De-energize and lock out the circuit controlling the limit switch before removing or installing any actuator components, following NFPA 70E lockout/tagout procedures. Confirm the replacement lever mounts securely to the limit switch body and that the roller aligns correctly with the actuating cam or dog before restoring power. Do not force the lever arm adjustment beyond its stated range.