Schneider Electric Telemecanique 499-NES-251-00 Ethernet Switch

Description:

The TELEMECANIQUE 499-NES-251-00 Ethernet Switch is used in industrial Ethernet networks to provide reliable communication between PLCs, HMIs, industrial controllers, and other Ethernet-enabled automation devices. Commonly installed in industrial control panels, manufacturing systems, process automation equipment, and machine networks where dependable data transmission is required, this unmanaged ConneXium switch features five 10/100Base-TX copper ports for fast and efficient industrial networking. Maintenance teams, OEM engineers, and system integrators use the 499-NES-251-00 for network expansion, system upgrades, retrofit projects, preventive maintenance, and replacement of legacy industrial Ethernet switches.

Applications:

The TELEMECANIQUE 499-NES-251-00 Ethernet Switch is commonly used in industrial automation applications including PLC communication networks, HMI connectivity, SCADA systems, conveyor controls, packaging machinery, process automation, manufacturing cells, and material handling systems where reliable industrial Ethernet communication is essential.

Technical Specifications:

• Manufacturer: Telemecanique (Schneider Electric)
• Model / Part number: 499-NES-251-00 (499NES25100)
• Product type: Industrial Ethernet switch
• Series: ConneXium
• Ethernet ports: 5 × 10/100Base-TX RJ45
• Communication: IEEE 802.3 / IEEE 802.3u Ethernet
• Port features: Auto-negotiation, Auto-MDI/MDIX, Auto-polarity
• Switching method: Store-and-forward
• MAC address table: 1,024 addresses
• Buffer memory: 64 KB
• Power supply: 19.2–30 VDC (SELV), nominal 24 VDC
• Mounting: DIN rail or panel mount
• Protection: IP20
• Maximum cable length: 100 m (CAT5 or better)
• Operating temperature: 0°C to 60°C
• Application environment: Industrial Ethernet and automation networks
• Standards / Certifications: IEEE 802.3, IEEE 802.3u, UL 508, CSA 1010

Common Replacements:

• Schneider Electric TCSESU053FN0 ConneXium Ethernet Switch
• Hirschmann SPIDER II 5TX Ethernet Switch
• Moxa EDS-205A Industrial Ethernet Switch