Micro Switch Limit Switch Assembly 2-Unit Acrylic Enclosure 8-Pin Female

Micro Switch Limit Switch Assembly 2-Unit Acrylic Enclosure 8-Pin Female Connector

This is a custom-built limit switch assembly consisting of two clear acrylic enclosures, each housing three Micro Switch brand microswitches, mounted on a shared black anodized aluminum base plate. Each enclosure is fitted with a circular 8-pin female connector on its exterior panel for external wiring connections. The assembly is designed to detect position or travel limits in precision mechanical or automated systems.

Specifications & What's Included

• Brand: Micro Switch (Honeywell Micro Switch Division, Freeport, IL, USA)
• Switch model markings: 9228 and 23AC0 (visible on internal switch modules)
• Configuration: 2 acrylic enclosure units on a single shared base plate
• Microswitches per enclosure: 3 (6 total across both units)
• Enclosure material: Clear acrylic (polycarbonate-style block)
• Mounting base: Black anodized aluminum plate with through-hole mounting points
• External connector: 8-pin circular female receptacle per unit, gold-plated contacts
• Internal wiring: Multi-conductor leads (red, green, white) connecting microswitches to connector
• Adjustment: Knurled thumb-screw actuator visible on side of each enclosure
• Country of manufacture: USA (Freeport, Illinois)

Applications

Micro Switch (a division of Honeywell) has manufactured precision snap-action microswitches and limit switch assemblies since the 1940s, and their switches remain standard components in industrial automation, robotics, semiconductor fabrication equipment, and precision motion control systems. Limit switch assemblies like this one are used to detect end-of-travel positions on linear or rotary mechanisms — signaling a controller to stop, reverse, or trigger the next step in a sequence. The acrylic enclosure construction is common in laboratory automation and semiconductor tool applications where the switch mechanism must remain visible for alignment and debugging, and where a lightweight, non-metallic housing is preferred. The 8-pin circular connector provides a robust, keyed interface for wiring harness connection, reducing the chance of miswiring during installation or maintenance. This type of multi-switch assembly is often found in wafer handling equipment, precision stages, optical instruments, and custom automation fixtures from the 1980s through the 2000s.