Foxboro A4H254‑8F8T Industrial Managed Ethernet Switch

Technical Specifications

Model:A4H254‑8F8T

Brand:Foxboro

System compatibility:I/A Series DCS control system

Function:Industrial managed ethernet switching,real‑time data transmission for DCS control network

Installation:Standard 19‑inch rack‑mount installation

Port configuration:8 × 100Base‑TX RJ‑45 copper port,8 × 100Base‑FX MT‑RJ multimode fiber port,DB‑9 RS‑232 console management port

Network feature:Layer‑2 managed switch,support RSTP rapid spanning‑tree redundancy,VLAN division,port trunking,port mirroring

Management mode:Web GUI,CLI serial console,SNMP v1/v2/v3 remote monitoring

Power supply:100‑240VAC 50‑60Hz AC input,support redundant power module expansion

Switching capacity:8.8Gbps non‑blocking switching fabric

MAC address table:16K entries

Diagnostic:Front‑panel LED indicators for port link status,speed,power supply and fault alarm

Environmental standard:Compliant with ISA‑S71.04 Class G3 industrial atmospheric condition

Housing:Metal rack‑mount chassis,forced‑air cooling,anti‑vibration mechanical reinforcement

Protection class:IP20

Horizontal operating temperature:0℃ ~ +60℃

Vertical operating temperature:‑20℃ ~ +55℃

Storage temperature:‑40℃ ~ +85℃

Relative humidity:5%‑95% non‑condensing

Weight:1.48kg

Dimensions:44mm × 442mm × 265mm

Certification:CE,UL,FCC

MTBF:>94000 hours

Built‑in function

A4H254‑8F8T industrial managed ethernet switch constructs stable redundant control network for Foxboro I/A Series DCS racks. Mixed fiber‑copper ports realize long‑distance field‑rack interconnection and local node access meanwhile RSTP protocol prevents network loop and realizes link redundancy. Multiple management approaches facilitate network configuration and remote fault diagnosis. Visual LED status lights help field staff quickly locate link and power faults,guarantee real‑time reliable data communication for petrochemical,power and chemical continuous‑process DCS networks.

Product Brief

A4H254‑8F8T belongs to Foxboro I/A Series legacy DCS network spare‑part family,obsolete original industrial network device. It needs to be installed in standard 19‑inch instrument cabinet and match correct fiber or copper network wiring. Widely used for original Foxboro DCS equipment maintenance and renovation. ESD anti‑static protection shall be followed during installation