M12 4 Pin D-Code Female To Female Inline Coupler
PCM Cable Co., Ltd. is one of the leading m12 4 pin d-code female to female inline coupler manufacturers and suppliers in China. Welcome to wholesale high quality customized products at discount price from our factory. Contact us for quotation and free sample.
The M12 4 Pin D-Code Female to Female Coupler is a fully shielded inline coupler designed to extend two M12 D-coded male cables. After mating, the coupler achieves IP67 protection, ensuring secure and reliable connections even in harsh industrial environments.
Engineered for Category 5e Ethernet performance, it supports 100 Mbps data transmission and provides robust connectivity for Industrial Ethernet and fieldbus systems such as PROFINET, EtherCAT, and Fieldbus.
This compact coupler acts as a gender changer or inline adapter, offering flexible installation options for industrial network expansions.
Specification
| Product Name | M12 4 Position D-Code Female to M12 4 Position D-Code Female Coupler |
| Drawing No. | PCM-0860 |
| Connector Type | M12 4 Pin D-Code Female to Female Coupler |
| Coding | D-coded (Ethernet, 100 Mbps, Cat5e) |
| Shielding | Full shielded, EMC protection |
| Protection Rating | IP67 (when mated) |
| Application Protocols | PROFINET, EtherCAT, Fieldbus, Industrial Ethernet |

Features
- M12 D-Code 4 Pin Female to Female inline coupler
- Shielded design for reliable data transmission in noisy environments
- IP67 rated when mated, resistant to dust, water, and vibration
- Supports Cat5e Ethernet applications up to 100 Mbps
- Extends cable length by joining two M12 D-coded male cables
- Compatible with Industrial Ethernet protocols (PROFINET, EtherCAT, Fieldbus)
- Compact, durable construction for factory automation and industrial control
Applications
- Industrial Ethernet networks
- Factory automation & industrial control systems
- PROFINET & EtherCAT devices
- I/O modules and controllers
- Sensors and actuators
- Testing & measurement equipment
About Premier Cable
Premier Cable specializes in industrial connectivity solutions, offering a wide range of M12 connectors, adapters, and Ethernet cables. With durable designs, flexible customization, and reliable performance, our products are trusted by automation engineers and system integrators worldwide.

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