Square D L100WNC2M18 Limit Switch Dpst 2NC Rotary Spring Return

Product Description

The SQUARE D L100WNC2M18 is a general-purpose limit switch designed for industrial position-sensing and machine-control applications. It features a DPST contact form with a 2NC contact configuration and a rotary spring-return actuator mounted on the side of the aluminum body. Rated for operation up to 600 volts, the switch carries an IP67 ingress protection rating, making it suitable for environments where dust and temporary immersion are a concern. Screw terminals and a 1/2-inch NPT conduit connection simplify field wiring. The operating temperature range spans -10 degrees F to 185 degrees F, supporting use in demanding indoor and outdoor industrial settings. Licensed electricians and industrial maintenance technicians are the primary installers.

This limit switch is suited for use on automated machinery, conveyor systems, door-position sensing, and general-purpose electromechanical control circuits in manufacturing and process environments. The side-mounted rotary spring-return actuator allows the switch to reset automatically after the actuating cam or dog passes, making it well matched to repetitive cycling applications. NEMA ratings of 1, 2, 4, 12, and 13 cover a broad range of enclosure and environmental requirements, from basic indoor use to oil-tight and dust-tight industrial installations.

Key Features

• DPST contact form with 2NC configuration for fail-safe position detection
• Rotary spring-return actuator, side-mounted, for automatic reset after actuation
• 600-volt rating supports a wide range of industrial control circuits
• IP67 ingress protection rating resists dust and temporary water immersion
• Aluminum body construction for durability in industrial environments
• NEMA 1, 2, 4, 12, and 13 ratings for versatile enclosure compatibility
• RoHS compliant; meets IEC 60068-2-27, IEC 60068-2-6, IEC 60529, and IEC 61140 standards

Compatibility

Designed as an OEM-style general-purpose limit switch replacement for industrial control and automation applications requiring a DPST 2NC rotary spring-return actuator with side-mount configuration and 1/2-inch NPT conduit entry.

Installation Notes

Installation should be performed by a qualified electrician in accordance with the NEC and applicable local codes. De-energize and lock out all circuits before wiring or mounting the switch. Secure conduit connections using the 1/2-inch NPT entry and verify terminal screw torque meets the panel or machine manufacturer specifications. Confirm actuator alignment with the cam or operating dog before restoring power to avoid premature contact wear.