The Enterasys A2H124-24FX-RH is a fully managed Layer 3 industrial Ethernet switch designed for mission-critical infrastructure in harsh environments. As part of the A2H SmartEdge series, this 24-port ruggedized switch combines 16x 10/100BASE-TX ports with 8x 100BASE-FX multi-mode fiber interfaces, specifically engineered for oil & gas pipeline SCADA systems requiring extended temperature operation. The A2H124-24FX-RH’s “RH” designation indicates compliance with Railway EN 50155 standards, making it ideal for rolling stock networks exposed to extreme vibration.
Featuring Enterasys’ patented Dynamic Routing Protocol (DRP) technology, the Enterasys A2H124-24FX-RH delivers deterministic latency <5μs for power substation automation systems. Its modular power design supports 24VDC/110VDC/220VAC inputs with <10ms failover, ensuring uninterrupted operation in offshore wind farm communication backbones. The switch’s conformal coating and IP54-rated housing protect against salt fog corrosion in coastal refinery installations.
Technical Specifications
| Parameter Name | Parameter Value |
|---|---|
| Product Model | A2H124-24FX-RH |
| Manufacturer | Enterasys Networks |
| Product Type | Managed Layer 3 Industrial Switch |
| Copper Ports | 16x 10/100BASE-TX (RJ45, auto-MDI/MDIX) |
| Fiber Ports | 8x 100BASE-FX (SC connectors, 2km reach) |
| Switching Capacity | 12.8 Gbps |
| Forwarding Rate | 9.6 Mpps |
| Power Input | 24-240VDC/85-264VAC (dual redundant) |
| Protection | IP54, 8kV surge protection |
| Operating Temp | -40°C to +75°C |
| Certifications | UL 60950, EN 50121-4, DNV GL |
| Dimensions | 440x44x330mm (19″ rack mountable) |
| Weight | 5.2kg |
Key Features and Advantages:
The A2H124-24FX-RH delivers military-grade network resilience through Hitless Switchover (HSO) technology, maintaining <50ms recovery during power transitions in metro rail signaling systems. Its built-in MPLS support enables seamless integration with legacy SONET/SDH networks in electric utility substations.
Advanced traffic engineering: Hardware-based Time-Aware Shaping (TAS) meets IEEE 802.1Qbv standards for automotive assembly line robots requiring μs-level synchronization. The switch’s 8-layer hierarchical QoS prioritizes protective relay traffic in smart grid applications.
Maintenance optimization: Front-facing SD card slot stores configuration backups for rapid disaster recovery in mining operations. The switch’s ceramic-based thermal design dissipates 120W heat load without forced air cooling, suitable for explosion-proof enclosures.
Application Areas:
The Enterasys A2H124-24FX-RH excels in:
- Energy Sector: IEC 61850-3 compliant substation automation networks
- Transportation: EN 50155-certified train control systems
- Heavy Industry: Blast furnace sensor networks with Class I Div 2 certification
- Maritime: DNV GL-approved offshore platform communication
In steel mills, the switch’s 150ms burst immunity protects against arc furnace electromagnetic interference. Water treatment plants leverage its MODBUS TCP/IP gateway functionality to integrate legacy RTUs. The fiber ports enable 2km connectivity between control rooms and wellhead safety systems in shale gas fields.
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Installation and Maintenance:
Installation preparation: Verify grounding resistance <1Ω before deploying A2H124-24FX-RH in Class I Div 2 areas. Use Enterasys-approved C3X-2000CX cables for fiber connections exceeding 1.5km in dusty environments.
Maintenance recommendations: Perform quarterly dielectric testing on power terminals using Fluke 1587 FC insulation tester. Rotate redundant power supplies every 6 months to equalize capacitor aging. Utilize the built-in BER (Bit Error Rate) tester for proactive fiber link quality monitoring in railway tunnel installations.
Product Assurance:
Enterasys provides 12-month extended warranty for A2H124-24FX-RH, including free lifetime access to firmware security patches. Each unit undergoes 1,000-hour thermal shock cycling (-40°C↔+85°C) and 50g mechanical shock testing (MIL-STD-202G). Our 24/7 technical support guarantees 2-hour response for critical infrastructure failures with optional on-site cryptographic key rotation services for IEC 62443 compliance.
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