Description
ENTERASYS A4H124-4FX P0973JN electromechanical relay terminal
ENTERASYS A4H124-4FX P0973JN: High-Power Managed Ethernet Switch for Demanding Industrial Networks
In the complex landscape of industrial connectivity, the ENTERASYS A4H124-4FX P0973JN emerges as a robust managed Ethernet switch designed to meet the rigorous demands of industrial automation, smart infrastructure, and mission-critical networks. Manufactured by Extreme Networks under the Enterasys brand, this switch combines high-speed data transfer, advanced routing capabilities, and rugged durability to ensure reliable performance in harsh environments. The A4H124-4FX model features 24 Gigabit Ethernet ports and 4 SFP fiber ports, while the P0973JN power supply delivers stable, redundant power—making it ideal for large-scale industrial setups, transportation hubs, and utility networks.
As a Layer 3 managed switch, the A4H124-4FX P0973JN supports advanced routing protocols (e.g., OSPF, BGP), quality of service (QoS), and network segmentation, enabling efficient traffic management in complex Industrial IoT (IIoT) ecosystems. Its rugged design, compliant with EN 50155 (railway) and EN 61850-3 (power utilities), ensures operation in extreme temperatures (-40°C to 75°C), high vibration, and electromagnetic interference (EMI)-prone environments. With enterprise-grade security features and scalable architecture, this switch is a cornerstone for industries requiring uninterrupted connectivity and robust cybersecurity.
| Label |
Specification |
| Model Number |
A4H124-4FX P0973JN |
| Brand |
ENTERASYS (Extreme Networks) |
| Type |
Managed Ethernet Switch (Layer 3) |
| Ports |
24 x 10/100/1000BASE-T Gigabit ports
4 x SFP fiber ports (1000BASE-SX/LX) |
| Power Supply |
P0973JN (100-240 VAC, 50/60 Hz; supports dual power inputs) |
| Operating Temperature |
-40°C to 75°C |
| MTBF |
>700,000 hours |
| Dimensions |
440 mm x 43.6 mm x 295 mm (1U rack-mountable) |
| Security |
IEEE 802.1X, MAC filtering, ACLs, SNMPv3, SSL/TLS, SSH |
| Routing Protocols |
OSPFv2/v3, BGP, RIP, IPv4/IPv6 static routing |
| QoS |
IEEE 802.1p/q, DSCP marking, traffic shaping, priority queues |
| Management |
WebUI, CLI (SSH/Telnet), SNMPv3, ExtremeXOS, REST API |
| Certifications |
CE, UL, FCC, EN 50155, EN 61850-3, IEC 61000-6-2/4 |
The ENTERASYS A4H124-4FX P0973JN is engineered for industrial resilience. Its wide temperature tolerance and shock/vibration resistance (compliant with IEC 61373) make it suitable for deployment in factories, outdoor substations, and rolling stock. The switch supports dual power supplies (AC/DC optional), ensuring redundancy and preventing downtime from power disruptions. The 4 SFP ports enable seamless integration with fiber optic networks, extending connectivity over long distances while resisting EMI—a critical feature for utility and transportation applications.
From a networking perspective, the switch excels in Layer 3 routing and high-bandwidth performance, capable of handling large volumes of data from sensors, cameras, and control systems. Its QoS capabilities prioritize real-time traffic (e.g., PLC commands, video surveillance) to minimize latency, while VLAN segmentation enhances security by isolating sensitive industrial control networks from enterprise traffic. The P0973JN power supply includes surge protection and wide voltage input, ensuring stable operation in unstable electrical environments.
Security is deeply integrated, with features like port-based authentication, encrypted management interfaces, and advanced threat detection (e.g., DHCP snooping, IP source guard). This aligns with industry standards like IEC 62443, making it suitable for environments where cybersecurity is non-negotiable.
In manufacturing, the A4H124-4FX P0973JN connects intelligent machines, robotics, and SCADA systems, enabling real-time data exchange for predictive maintenance and process optimization. Its fiber ports support long-range connectivity between production floors and central control rooms, while QoS ensures critical automation signals are prioritized. In rail transportation, the switch complies with EN 50155, powering on-board networks for passenger Wi-Fi, video surveillance, and train control systems, even in high-vibration environments.
For power and utilities, the switch integrates with smart grid devices, routing data from remote sensors to central management systems via fiber optics. Its rugged design withstands the harsh conditions of substations, while security features protect against cyber threats to critical infrastructure. Across industries, the switch addresses challenges like:
- Scalability: 24 Gigabit ports and fiber uplinks support growing IIoT deployments.
- Reliability: Redundant power and rugged hardware reduce unplanned downtime.
- Security: Layered security measures protect against evolving cyber risks in connected industrial systems.
- ENTERASYS A4H124-8FX P0973KN – 8 SFP port variant for higher fiber connectivity needs.
- ENTERASYS A4H248-4FX P0973JP – 48-port Gigabit switch with 4 SFP ports for large-scale networks.
- ENTERASYS A4H124-4FX-DC P0973JN-DC – DC-powered version (24-60 VDC) for industrial automation systems.
- ENTERASYS A4H124-4FX-Lite – Simplified Layer 2 variant for basic industrial networking.
- ENTERASYS A4H124-4FX-EXT – Extended temperature model (-40°C to 85°C) for extreme environments.
Installation involves rack-mounting the switch in a control cabinet or industrial enclosure. Key considerations include:
- Power Redundancy: Connect two power supplies (if available) for fault tolerance.
- Fiber Integration: Use single-mode/multi-mode SFP transceivers based on distance requirements.
- Cable Shielding: Deploy shielded Cat6/Cat7 cables for copper ports and armored fiber cables for outdoor runs.
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