Topworx 21-11516-A4 Go Switch Proximity Sensor

Description:

The TOPWORX 21-11516-A4 GO Switch proximity sensor limit switch is used in industrial position sensing systems to detect ferrous or magnetic targets without conventional mechanical lever actuation. Commonly installed on valves, conveyors, machinery, process equipment, and automated production systems operating in demanding industrial environments. Maintenance teams and system integrators use this part for proximity sensor replacement, position detection, machine control repair, and restoration of reliable equipment feedback.

Applications:

The TOPWORX 21-11516-A4 GO Switch is commonly used in industrial automation and process control systems where rugged proximity sensing and dry-contact limit switching are required. The Model 21 platform combines proximity sensing with limit switch functionality and operates without power consumption, current leakage, or voltage drop.

Technical Specifications:

• Manufacturer: TOPWORX
• Model / Part Number: 21-11516-A4
• Product Line: GO Switch
• Series: Model 21
• Product Type: Proximity Sensor Limit Switch
• Sensor Type: Leverless Dry Contact Proximity Sensor
• Contact Configuration: SPDT Form C
• Sensing Type: Side Sensing
• Standard Ferrous Sensing Range: 3/8 in / 10 mm
• Target Type: Ferrous Metal or Magnetic Target
• Electrical Rating: 10 A at 120 VAC
• Electrical Rating: 5 A at 240 VAC
• DC Rating: 3 A at 24 VDC
• Function: Position and Limit Detection
• Application: Valves, Conveyors, Machinery, and Industrial Automation Systems
• Exact A4 Configuration: Verify From Product Nameplate or Manufacturer Configuration Documentation

Common Replacements:

• TOPWORX 21-11516-A4
• TOPWORX 21-11516
• TOPWORX Model 21