Unshakeable Power for Moving Networks | E-link China Launches EN50155 M12 PoE+ Injector for Rolling Stock

Rail-Grade Reliability: EN50155 Certified M12 PoE Injector Powers Critical Onboard Systems Amid Extreme Vibration

12-48V DC Input, 30W 802.3at Output, Gigabit Data, M12 Connectors - Engineered for the Demanding Environments of Rail, Metro, and Heavy Vehicles

In the world of rolling stock and heavy mobile applications, network reliability isn't just about connectivity—it's about survival. Extreme vibration, shock, temperature swings, and electromagnetic interference are daily realities that can cripple standard networking equipment. To power mission-critical onboard systems like passenger Wi-Fi, CCTV surveillance, and diagnostic sensors, a new class of robust infrastructure is required. E-link China rises to this challenge with the launch of the LNK-INJ301-M12 EN50155 Industrial PoE Injector. This device is not merely an accessory; it is a cornerstone of resilient mobile networks, designed from the ground up to meet the rigorous EN50155 standard for railway applications.

Engineered for Motion: Core Innovations

1. EN50155 Railway Compliance: Certified for use in rolling stock environments, ensuring reliable operation under the specific stresses of shock, vibration, humidity, and extended temperature cycles mandated by the standard. This is the hallmark of trust for rail and metro system integrators.

2. M12 Connector Superiority: Replaces standard RJ45 ports with ruggedized, screw-locked M12 X-coded or D-coded connectors (as specified). This design guarantees an IP67-rated connection that resists loosening under constant vibration, a critical failure point for RJ45s in mobile environments.

3. Intelligent & Safe PoE Delivery: Fully compliant with IEEE 802.3af/at standards. Incorporates Intelligent Detection that verifies a valid PoE signature before activating power, providing absolute protection for connected legacy or non-PoE devices against accidental damage.

4. Industrial Endurance Design:

   • Wide Operating Temperature: Functions flawlessly from -40°C to 80°C, covering the full spectrum of climatic conditions from arctic winters to engine room heat.

   • Broad Voltage Input (12-48V DC): Directly interfaces with standard vehicle and rolling stock DC power systems (24V/48V/72V nominal), eliminating the need for additional voltage regulation.

   • Robust Metal Housing & Mounting: Designed for DIN-rail or direct wall mounting within control cabinets, withstanding high G-force shocks and vibrations.

Technical Specifications at a Glance

• Model: LNK-INJ301-M12

• Standard: EN50155 Compliant for Railway Applications

• PoE Standard: IEEE 802.3af/at

• Max Output: 30W (802.3at) per port

• Data Rate: 10/100/1000BASE-TX

• Power Input: 12-48 VDC (Wide Range)

• Connectors: M12 for Power & Data (Robust, vibration-proof)

• Operating Temperature: -40°C to +80°C

• Diagnostics: Multi-status LED Indicators

• Installation: DIN-Rail (35mm) / Wall Mount

• Housing: Industrial Metal Enclosure

Target Applications: Where Failure is Not an Option

• Rail & Metro Trains: Powering onboard CCTV cameras, passenger information displays, Wi-Fi access points, and door control sensors.

• Trams & Light Rail: Providing reliable data and power for ticketing systems, annunciators, and security equipment.

• Commercial & Special Vehicles: Enabling telematics, fleet management cameras, and mobile digital signage in buses, mining trucks, and emergency vehicles.

• Marine & Aerospace: Suitable for any mobile platform requiring vibration-resistant, reliable network power.

Value Proposition: Beyond the Specification Sheet

• Zero Downtime: M12 connections and industrial design prevent disconnections and failures, maximizing system availability.

• Simplified Integration: Direct 12-48V DC input and compliant design speed up vehicle integration and certification processes.

• Reduced Lifecycle Cost: Extreme durability lowers total cost of ownership by minimizing replacements and maintenance interventions.

• Future-Proof Investment: Gigabit capability and 30W power budget support next-generation high-power, high-bandwidth devices.

Safety & Quality Commitment
The LNK-INJ301-M12 is engineered with redundant safety mechanisms and undergoes rigorous testing per EN50155 and relevant industrial standards. It is backed by E-link China's dedicated technical support and a warranty program designed for the industrial sector.

About E-link China
E-link China specializes in hardening connectivity for the world's toughest environments. From factory floors to rolling stock, our solutions are built to perform where others fail. We partner with system integrators and OEMs to deliver reliability that keeps critical applications online.