Overview
The Allen-Bradley 871A-TS4-DM1 is an 871A Series terminal chamber designed for field-attachable M12 connector systems. This straight male connector provides a dependable interface for DC Micro connections in inductive proximity sensor applications and similar industrial automation equipment. As part of Rockwell Automation’s established connector line, it offers proven reliability for plant floor and machinery installations.
Key Features
- DC Micro (M12) Connection: Straight male 4-pin configuration for standard M12 applications
- Field Attachable: Designed for cable assembly and termination in the field without factory re-work
- Rated Voltage & Current: 250VAC/VDC, 4A maximum current capacity
- Cable Accommodation: Accepts cable jackets 4–6 mm (0.16–0.24 in.) diameter
- PG 7 Rear Nut Threading: Secure panel or enclosure mounting
- Series B Configuration: Latest revision of the 871A connector family
Technical Specifications
- Connector Type: M12 Micro Connector, Straight Male
- Pin Count: 4 pins
- Voltage Rating: 250 VAC / VDC
- Current Rating: 4 Amps
- Cable Jacket Diameter: 4–6 mm (0.16–0.24 in.)
- Thread Size (Rear Nut): PG 7
- Connection Type: Field Attachable, Terminal Chamber
- Lifecycle Status: Active
- Manufacturer: Allen-Bradley / Rockwell Automation
Typical Applications
The 871A-TS4-DM1 is commonly used in:
- Inductive proximity sensor connections and extensions
- Photoelectric and distance-measuring sensor installations
- Machine tool control signal wiring
- Automotive manufacturing equipment and robotic systems
- Food processing and packaging line machinery
- Material handling and conveyor system sensor interfaces
Compatibility & Replacements
Compatible With
- Allen-Bradley 871A Series M12 connector ecosystem
- DC Micro (M12) industrial sensor networks
- Standard M12 4-pin straight male receptacles and cables
- Rockwell Automation industrial automation platforms
- Field attachable cordset connector systems
Replaces / Drop-In Replacement For
- 871A-TS4-DM (base model without Series B designation)
- Verify exact compatibility with legacy systems before substitution
Works With
- M12 A-coded 4-pin connectors and receptacles
- Standard industrial sensor harnesses (4–6 mm cable diameter)
- PG 7 threaded panel and enclosure mounts
- Allen-Bradley inductive proximity sensors and related detection devices
- Field-attachable terminal chamber ecosystems


















