Foxboro P0973JN 24-Port Fiber Managed Switch

Foxboro P0973JN 24-Port Fiber Managed Switch

The Foxboro P0973JN is a high-performance 24-port fiber optic managed Ethernet switch engineered for mission-critical industrial automation networks. Designed specifically for Foxboro I/A Series and Evo control systems, this Layer-2 switch delivers deterministic communication, redundant architecture, and exceptional reliability in harsh industrial environments.

Technical Specifications

• Model: P0973JN
• Port Configuration: 24 x 100BASE-FX fiber optic ports (multimode)
• Switching Capacity: 4.8 Gbps wire-speed forwarding
• Network Protocol: IEEE 802.3 Ethernet Layer-2 switching
• Redundancy: Dual redundant power supply support
• Operating Temperature: 0 °C to 60 °C (32 °F to 140 °F)
• Mounting: DIN-rail or rack-mount compatible
• Certifications: UL, CE, ATEX Zone 2 compliant

Key Features & Benefits

Industrial-Grade Durability: Built to withstand extreme temperatures, vibration, and electromagnetic interference common in process control environments. Conformal-coated PCBs ensure long-term reliability in corrosive atmospheres.

Deterministic Performance: Prioritized traffic handling and low-latency switching ensure real-time control data reaches field devices without delay, critical for maintaining process stability and safety.

Seamless Integration: Native compatibility with Foxboro FCP270, FBM modules, and Evo I/O ensures plug-and-play deployment within existing control architectures, reducing commissioning time.

Network Resilience: Supports rapid spanning tree protocol (RSTP) and ring topology for sub-50ms failover, maintaining continuous operation even during link failures.

Application Scenarios

The P0973JN excels in distributed control system (DCS) backbones where fiber optic isolation is required to eliminate ground loops and electrical noise. Ideal applications include:

• Oil & gas refineries with long-distance controller-to-field device connections
• Chemical processing plants requiring intrinsically safe network segments
• Power generation facilities with high EMI environments
• Water treatment plants with geographically dispersed I/O clusters
• Pharmaceutical manufacturing with stringent uptime requirements

Solution Architecture

Deploy the P0973JN as a core switch in star or ring topologies to interconnect multiple FCP270 controllers, operator workstations, and remote I/O racks. Fiber optic links provide electrical isolation up to 2 km (multimode) or 15 km (single-mode with appropriate SFPs), enabling safe separation of control rooms from hazardous process areas.

Pair with Foxboro P0973BP redundant power supplies for N+1 power redundancy, ensuring the switch remains operational during utility power fluctuations or single power supply failures.

Frequently Asked Questions

Q: Is the P0973JN compatible with third-party Ethernet devices?
A: Yes, as a standard Layer-2 Ethernet switch, it supports any IEEE 802.3-compliant device, though optimal performance is achieved within Foxboro ecosystems.

Q: Can I mix fiber types on the same switch?
A: The P0973JN supports multimode fiber; for single-mode requirements, consider the P0973KJ model with SFP slots for flexible media selection.

Q: What is the maximum network diameter?
A: With multimode fiber, up to 2 km per link; total network diameter depends on topology and repeater usage.

Q: Does it support VLANs for network segmentation?
A: Yes, the P0973JN supports IEEE 802.1Q VLAN tagging for logical network separation and traffic prioritization.

Warranty & Support

Every Foxboro P0973JN includes a comprehensive 12-month warranty covering manufacturing defects and component failures. Our global support team provides technical assistance for configuration, troubleshooting, and integration guidance. Replacement units ship within 24-48 hours to minimize downtime.

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