Overview
The Allen-Bradley 872C-DH4NN12-D4 is a compact inductive proximity sensor from the WorldProx family, engineered for reliable ferromagnetic object detection in industrial automation systems. This 12mm diameter barrel sensor delivers solid-state switching with a 4mm nominal sensing distance, making it suitable for machine tool position sensing, material handling, and conveyor line applications where space is limited.
Key Features
- WorldProx inductive design — detects ferromagnetic materials with no contact wear
- Compact 12mm barrel — short profile fits confined mounting spaces
- 4mm sensing distance — repeatable, consistent object detection
- 3-wire DC sinking output — NPN logic for PLC and control module integration
- Micro QD quick-disconnect — tool-free connection for rapid changeover
- Nickel-plated brass housing — corrosion resistance in wet or dusty environments
- Unshielded design — cost-effective for open-field sensing applications
Technical Specifications
- Supply Voltage: 10–30V DC
- Current Output: ≤200 mA
- Output Type: Normally Open (N.O.), Sinking (NPN)
- Sensing Distance: 4 mm nominal
- Barrel Diameter: 12 mm
- Barrel Length: Short profile
- Material: Nickel-plated brass, plastic sensing face
- Connection: 4-pin DC Micro QD connector
- Shielding: Unshielded
- Series: 872C WorldProx
Typical Applications
The 872C-DH4NN12-D4 is ideal for:
- CNC machine spindle or tool position detection
- Material handling conveyors and sorters
- Assembly line presence sensing
- Part count and limit switching
- Automation control feedback in confined spaces
Compatibility & Replacements
Compatible With
- Allen-Bradley CompactLogix, ControlLogix, and SLC 500 controllers
- Rockwell Automation industrial PLCs with 10–30V DC I/O modules
- Any 10–30V DC control logic accepting NPN sinking sensor inputs
- Micro QD connector receptacles on standard automation panels
Replaces / Drop-In Replacement For
The 872C-DH4NN12-D4 is a direct replacement for earlier WorldProx Series C models with matching barrel diameter, sensing distance, and output polarity. Verify specific part number compatibility with your system integrator before ordering.
Works With
- Studio 5000 Logix Designer (Rockwell Automation)
- Allen-Bradley EtherNet/IP networks (when used with I/O modules)
- PROFINET and other industrial protocols (via gateway modules)
- Standard 24V DC and 10–30V DC power supplies
