Square D 7A3N Limit Switch Lever Roller Cast Zinc Nylon

Product Description

The SQUARE D 7A3N is a limit switch lever roller designed as a direct accessory for industrial and commercial limit switch assemblies. The roller arm adjusts from 1.38 to 3.38 inches in length, with a 1/4-inch roller diameter and a 1/4-inch face width. The body is cast zinc, providing durability in demanding environments. The roller itself is nylon, which resists wear and operates quietly against cams, actuators, and conveyor components. This part is installed by electricians and automation technicians servicing control systems where precise mechanical actuation of a limit switch is required.

The 7A3N is used wherever a replacement or spare lever roller is needed for a compatible limit switch. It is suited for industrial automation, conveyor systems, machine guarding, and process control applications. The adjustable arm length allows the roller to be positioned correctly to contact the actuating target at the right travel point. The nylon roller material is appropriate for use against metal cams and tracks without causing surface damage or excessive wear on either contact surface.

Key Features

• Adjustable arm length from 1.38 to 3.38 inches for flexible positioning
• Cast zinc body for structural rigidity and resistance to mechanical stress
• Nylon roller for low-friction, quiet actuation against cams and tracks
• 1/4-inch roller diameter with 1/4-inch face width for precise contact
• Designed specifically for use with limit switches as a replacement or service part

Compatibility

Designed for use with limit switches as a replacement lever roller accessory. Confirm fitment against the specific limit switch model and lever roller mounting configuration before installation.

Installation Notes

Installation is typically performed by a licensed electrician or qualified automation technician. De-energize the control circuit and lock out the machine before removing or installing limit switch accessories. Ensure the roller arm is set to the correct length and secured firmly before returning the system to service. Follow applicable NEC guidelines and equipment manufacturer instructions for limit switch accessory installation.