Combined Surge Protection for PoE Power and Ethernet Data Lines
LY21-2 is an inline RJ45 PoE surge protector designed to protect both Ethernet data signals and DC power transmitted through the same network cable. It is suitable for PoE cameras, wireless access points, IP phones, network terminals, and other powered Ethernet equipment operating on networks up to 100Mbps.
Combined protection for PoE power and Ethernet data pairs
Supports PoE power circuits up to 60V DC
Up to 100Mbps transmission with ≤0.2dB insertion loss
Compact IP20 design for network and control cabinets
Aplicações Adequadas
LY21-2 is suitable for powered Ethernet equipment that requires coordinated protection of both DC power and network data lines.
PoE IP Cameras
Protects outdoor and indoor PoE cameras against surges entering through Ethernet cables.
Wireless Access Points
Suitable for PoE-powered wireless access points, outdoor bridges, and radio equipment.
IP Phones & Terminals
Protects PoE IP phones, access-control terminals, intercoms, and network endpoints.
PoE Switches & Injectors
Helps protect PoE switch ports, injectors, network cabinets, and connected powered devices.
FAQ
Common questions about LY21-2 RJ45 PoE network surge protector selection and installation.
Para que serve o protetor contra sobretensões PoE LY21-2?
O LY21-2 é instalado em linha com um cabo RJ45 PoE para proteger tanto os sinais de dados Ethernet quanto os condutores de potência DC contra sobretensões induzidas por raios e transientes de comutação.
Qual é a diferença entre este modelo e o LY21-2 não PoE?
A versão PoE protege tanto os pares de dados quanto a alimentação de corrente contínua transmitida através do cabo Ethernet. A versão não-PoE é destinada principalmente à proteção de dados em redes de baixa tensão.
Qual tensão PoE o LY21-2 pode suportar?
The power section is listed for a maximum continuous operating voltage of 60V DC. Confirm the actual PoE standard, pair mode, supply voltage, and current before ordering.
What Ethernet speed does this model support?
The listed maximum transmission rate is 100Mbps. It should not be used for Gigabit Ethernet unless a separately tested Gigabit-compatible version is confirmed.
Where should the PoE surge protector be installed?
Install it inline and close to the protected PoE device. For outdoor cable runs, protection at both the outdoor equipment end and the building-entry end may be required.
O que deve ser confirmado antes de fazer o pedido?
Confirm the PoE voltage, continuous current, Ethernet speed, powered-pair mode, RJ45 pin configuration, cable category, grounding method, indoor or outdoor location, and required surge-withstand level.
