Overview
The Allen-Bradley 872C-DH4NN12-D4 is a WorldProx inductive proximity sensor from Rockwell Automation’s 872C series. This compact, cylindrical sensor features a nickel-plated brass barrel and plastic sensing face, designed for non-contact object detection in industrial automation applications. Operating across a 10–30V DC supply range, it delivers reliable, repeatable sensing for motion control, assembly automation, and material handling systems.
Key Features
- 12mm diameter short barrel with chrome-plated brass construction for corrosion resistance
- 4mm sensing distance enables precise object detection with minimal dead-zone
- NPN sinking (N.O. normally open) output configuration for direct PLC input compatibility
- Unshielded design suitable for non-ferrous metal and general-purpose applications
- Micro QD (DC) quick-disconnect connector for fast replacement and simplified wiring
- IP67 rated housing ensures protection against dust and moisture ingress
Technical Specifications
- Sensor Type: Inductive Proximity
- Operating Voltage: 10–30V DC
- Output Type: NPN Sinking (N.O.)
- Barrel Diameter: 12mm
- Barrel Style: Short
- Sensing Distance: 4mm
- Connector: 4-Pin Micro QD (DC)
- Housing Material: Nickel-plated brass barrel, plastic sensing face
- Shielding: Unshielded
- IP Rating: IP67
- Series: 872C WorldProx
- Condition: New – No Box
Typical Applications
The 872C-DH4NN12-D4 is commonly used in:
- Assembly line automation and machine synchronization
- Conveyor and material handling systems requiring non-contact detection
- Packaging machinery and product detection
- Machine tool limit switching and position sensing
- Automated guided vehicle (AGV) navigation and obstacle detection
Compatibility & Replacements
Compatible With
- Allen-Bradley CompactLogix and ControlLogix PLCs via analog/digital input modules
- Siemens S7 series PLCs with appropriate 24VDC input cards
- Omron, Mitsubishi, and third-party controllers supporting 10–30V DC NPN sensors
- EtherNet/IP and PROFINET networks via appropriate I/O gateways
- Standard industrial motion control and safety systems
Replaces / Drop-In Replacement For
The 872C-DH4NN12-D4 is part of the Allen-Bradley 872C series. Verify compatibility with your system integrator or controls engineer before ordering, as proximity sensor interchangeability depends on exact voltage, output type, sensing distance, and connector configuration.
Works With
- Rockwell Studio 5000 (RSLogix 5000) for programming and configuration
- TIA Portal (Siemens) for cross-platform integration
- Standard 24VDC input modules and analog input cards
- Micro QD quick-disconnect connectors and harnesses
- EtherNet/IP protocol for networked I/O systems
