The Enterasys A4H124-24FX P0973JN is a ruggedized 24-port managed fiber switch designed for mission-critical industrial networks, belonging to Enterasys’ A4H series of hardened networking solutions. This Layer 2+ switch combines 24 100/1000BASE-X SFP slots with 4 10G uplink ports, achieving 336Gbps switching capacity for real-time control systems in petrochemical plants. The A4H124-24FX P0973JN implements <5ms network recovery via ERPSv2 (Ethernet Ring Protection Switching), ensuring continuous operation in power substation communication networks.
As part of Enterasys’ Industrial Networking Platform, this -40°C to +75°C operational device features IP67-rated housing with vibration resistance up to 5Grms, making it ideal for rolling stock applications in metro transit systems. Its dual redundant 24-240VDC power inputs with 6kV surge protection maintain uptime during grid fluctuations in offshore wind farms. The Enterasys A4H124-24FX P0973JN supports IEEE 1613 Class 2 for electromagnetic compatibility in steel mill environments.
Technical Specifications
| Parameter Name | Parameter Value |
|---|---|
| Product Model | A4H124-24FX P0973JN |
| Manufacturer | Enterasys |
| Product Type | Industrial Managed Ethernet Switch |
| Port Configuration | 24×100/1000BASE-X SFP + 4×10G SFP+ |
| Switching Capacity | 336Gbps |
| Forwarding Rate | 252Mpps |
| Power Input | 24-240VDC (dual redundant) |
| Protection Rating | IP67 (housing), IP40 (connectors) |
| Operating Temperature | -40°C to +75°C |
| Humidity Range | 5% to 95% non-condensing |
| Certifications | UL 60950-1, IEC 61850-3, IEEE 1613 |
| Dimensions | 440×280×88mm |
| Weight | 8.2kg |
| MTBF | 500,000 hours |
Key Features and Advantages:
Deterministic networking: The A4H124-24FX P0973JN guarantees <100μs port-to-port latency with Time-Aware Shaping (TAS) per IEEE 802.1Qbv, essential for automotive production line synchronization. Built-in PTP Grandmaster Clock (IEEE 1588v2) maintains ±50ns time accuracy across power grid phasor measurement networks.
Cyber security hardening: Implements MACsec AES-256 encryption on all ports for substation automation systems. The configurable management plane firewall blocks unauthorized access attempts in water treatment SCADA networks.
Advanced diagnostics: Cable integrity testing via Time Domain Reflectometry identifies fiber breaks within 1m accuracy in oil pipeline monitoring systems. Dynamic power budgeting allocates up to 60W per port for PoE+ cameras in mining surveillance applications.
Application Areas:
The Enterasys A4H124-24FX P0973JN excels in:
- Energy: Smart grid phasor measurement unit (PMU) networks
- Transportation: Railway signaling system backbone
- Oil & Gas: Offshore platform process control
- Manufacturing: Robotics cell real-time communication
In steel continuous casting operations, the switch’s 5Grms vibration tolerance maintains network stability near heavy machinery. Tunnel boring machines utilize its IP67 protection against mud/water ingress. The -40°C cold start capability ensures reliability in arctic oil exploration sites.
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Enterasys® A4 Fast Ethernet Switch PDF
Installation and Maintenance:
Installation preparation: Verify DC power polarity using Enterasys PWR-CHK tool before connecting A4H124-24FX P0973JN. Allow 30-minute temperature acclimatization when installing in environments with >40°C differential from storage conditions.
Maintenance recommendations: Perform annual fiber endface inspection with Enterasys FIBER-SCOPE prober. Update firmware during planned outages using Enterasys SAFE-UPGRADE utility. Clean air vents quarterly with dry compressed air (<30psi) in cement plant installations.
Product Assurance:
Enterasys provides 12 months advanced replacement warranty for A4H124-24FX P0973JN, including lifetime technical support. Each unit undergoes 1,000+ hour burn-in testing with 50 thermal shock cycles (-40°C↔+85°C).
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