George Risk Industries Inc. 4701A-48 Rail Mount Switch

Product Description

The GEORGE RISK INDUSTRIES INC. 4701A-48 is a rail-mount switch designed for overhead door applications. This type of switch is typically used as a position or status contact, sensing the open or closed state of an overhead door by mounting directly to the door rail assembly. Electricians and security or access-control technicians are the primary installers. The unit is sold individually and falls within the miscellaneous contacts product category, making it a common component in industrial, commercial, and residential overhead door control and monitoring circuits.

This switch is suited for overhead door rail installations where a discrete position contact is required. Typical applications include commercial roll-up doors, sectional overhead doors in warehouses or garages, and similar door assemblies where rail-mounted sensing is needed. The switch monitors door position and provides a contact signal to a connected control panel, alarm system, or door operator circuit.

Key Features

• Rail-mount design for direct attachment to overhead door track assemblies
• Functions as a position or status contact for overhead door open/closed sensing
• Sold as a single unit per package
• Suitable for integration with door operators, alarm panels, or access-control systems

Compatibility

Designed as an OEM-style replacement or new-installation contact switch for overhead door rail assemblies requiring a rail-mounted position switch.

Installation Notes

Installation is typically performed by a licensed electrician or a qualified access-control or door systems technician. Before servicing or replacing the switch, disconnect all power to the door operator and any connected control circuit. Secure the switch firmly to the rail per the door manufacturer's mounting requirements and verify proper contact actuation across the full range of door travel before restoring power. Local electrical codes, including applicable NEC requirements for low-voltage control wiring, should be followed.