Description
The ENTERASYS A2H254-16 P0973BK is a high-density industrial Ethernet switch designed for mission-critical network infrastructure in harsh environments. Part of Enterasys Networks’ (now Extreme Networks) ruggedized C-Series, this 48-port managed switch delivers Layer 2+ switching with advanced security and Quality of Service (QoS) features. The ENTERASYS A2H254-16 P0973BK supports 10/100/1000BASE-T copper connectivity with 16 ports featuring PoE+ (802.3at) capability, delivering up to 30W per port for powering IP cameras, wireless APs, and IoT devices. Its hardened design operates in -40°C to +75°C temperatures with shock/vibration resistance (IEC 60068-2), making it ideal for factory floors, transportation, and energy applications.
With dual redundant power inputs (24–58 VDC) and fanless operation, the switch ensures 99.999% uptime. The ENTERASYS A2H254-16 P0973BK features ExtremeXOS® operating system for granular control, including ACLs, DHCP snooping, and dynamic VLAN assignment. Its 176 Gbps switching capacity and 131 Mpps forwarding rate support deterministic real-time communication for PROFINET, EtherNet/IP, and Modbus TCP protocols.

ENTERASYS A2H254-16 P0973BK
Technical Specifications
| Parameter Name | Parameter Value |
| Product Model | A2H254-16 P0973BK |
| Manufacturer | Enterasys Networks (Extreme Networks) |
| Product Type | Industrial Managed Ethernet Switch |
| Copper Ports | 48x 10/100/1000BASE-T (RJ45) |
| PoE+ Ports | 16x (802.3at, 30W max/port) |
| PoE Budget | 500W total |
| Fiber Uplinks | 4x SFP (100/1000BASE-X) |
| Switching Capacity | 176 Gbps |
| Forwarding Rate | 131 Mpps |
| Power Input | Dual 24–58 VDC (redundant) |
| Operating Temperature | -40°C to +75°C |
| Humidity Tolerance | 5–95% non-condensing |
| Shock/Vibration | 50g / 5g (IEC 60068-2-27/6) |
| Protocols | RSTP/MSTP, OSPF, IGMP, LLDP |
| Security | 802.1X, RADIUS, TACACS+ |
| Management | CLI, Web, SNMPv3, NetSight |
| Dimensions | 44 x 440 x 316 mm |
| Weight | 5.2 kg |
Main Features and Advantages
Industrial resilience:
Fanless design with IP30-rated metal housing resists dust, moisture, and EMI. Dual power inputs with 6kV surge protection ensure operation during voltage fluctuations. -40°C cold-start capability supports Arctic deployments.
Advanced networking:
Time-Aware Scheduler (IEEE 802.1Qbv) enables deterministic latency<10>
Security and manageability:
Dynamic Segmentation isolates OT devices via automated policy enforcement. Zero-touch provisioning simplifies large-scale deployments. Ruggedized ExtremeXOS® supports encrypted configuration backups.
Application Field
The ENTERASYS A2H254-16 P0973BK secures connectivity in critical infrastructures:
Manufacturing: Machine vision system backbones with PoE+ for cameras
Power Utilities: Substation IEC 61850-3-compliant SCADA networks
Transportation: Rolling stock CCTV and passenger Wi-Fi systems
Mining: Conveyor control networks with explosive atmosphere compliance (ATEX Zone 2)
Water Treatment: Distributed I/O connectivity across flood-prone sites
Related Products
ENTERASYS A2H124-16: 24-port version with 16x PoE+
ENTERASYS C5G124-24: Fiber-only industrial switch for EMC-sensitive zones
ENTERASYS I-SID-08: DIN-rail PoE injector for non-PoE switches
ENTERASYS EPIC-2: Industrial SFP modules (single/multi-mode)
ENTERASYS RPS-1600: Redundant power supply for A2H254-16

ENTERASYS A2H254-16 P0973BK
Installation and Maintenance
Pre-installation preparation: Verify DC power source stability (±10% tolerance). Use shielded CAT6A cables (Belden 7812A) for PoE ports. Ground chassis via M5 screw (<0>
Maintenance recommendations: Update firmware quarterly via ExtremeXOS CLI. Monitor PoE utilization thresholds (80% recommended). Clean air vents biannually with dry compressed air. Replace after 10 years or if CRC error rates exceed 0.001%.
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