Overview
The Allen-Bradley 875CP-G20N30-A2 is an AC-powered capacitive proximity sensor designed for industrial automation and control applications. This cylindrical plastic-housed sensor detects the presence of objects without physical contact, making it ideal for use in manufacturing, packaging, material handling, and assembly systems. The 30mm barrel diameter and compact form factor allow flexible installation in confined spaces, while the 20mm sensing range provides reliable performance in high-speed production environments.
Key Features
- 30mm cylindrical plastic barrel housing with standard screw-thread mounting
- 20mm sensing distance (unshielded AC configuration)
- Normally Open (N.O.) output for fail-safe control logic
- 2-meter PVC cable connection with AC Micro Quick Disconnect
- 25 Hz operating frequency for stable, noise-free detection
- Multi-voltage operation (24–240V AC)
Technical Specifications
- Barrel Diameter: 30mm
- Sensing Range: 20mm
- Connection Type: 2M PVC Cable with AC Micro Quick Disconnect
- Output Configuration: Normally Open (N.O.)
- Operating Voltage: 24–240V AC
- Maximum Load Current: 300 mA
- Operating Frequency: 25 Hz
- Housing Material: Plastic (Cylindrical)
- Target Type: Metallic or non-metallic objects
- Mounting Type: Concise (Screw-Thread)
- Certifications: CE, CUL, KC, UL
- Weight: 0.31 lbs (0.14 kg)
- Series: 875CP (Series A)
Typical Applications
- Conveyor belt object detection and position control
- Machine tool part presence verification
- Packaging and labeling line automation
- Assembly line part counting and sorting
- Door and gate proximity detection
- Bin-full and level-detection systems
- Food and beverage processing equipment
Compatibility & Replacements
Compatible With
- Allen-Bradley ControlLogix, CompactLogix, MicroLogix PLCs
- Rockwell Automation Studio 5000 Logix Designer software
- Industrial control panels and automation systems accepting 24–240V AC inputs
- Discrete I/O modules with normally open contact inputs
- Legacy Allen-Bradley automation equipment and retrofits
Replaces / Drop-In Replacement For
- Earlier versions of the 875CP-G20N30 series
- Note: This product was discontinued by Rockwell Automation as of April 9, 2021. Customers seeking direct replacements should reference the successor model 875L-G25B30-A2.
Works With
- EtherNet/IP industrial networks (when interfaced through compatible I/O modules)
- Traditional hardwired discrete I/O control systems
- AC-powered automation circuits and machine controllers
- Standard industrial relay and timer-based control logic


















