Miniature surge arrester for LAN, PTF-51-PRO/PoE/Micro

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  • Code: PTF-51-PRO/PoE/Micro v2
  • Manufacturer's code: 5904041750144
  • Weight: 0.1 kg
  • Availability: Duża ilość produktów Produkt available
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PTF-51-ECO/PoE/Micro, miniature LAN surge arrester PROFESSIONALseries, designed for LAN switch, IP, camera, NVR, CCTV, manufactur

PTF-51-PRO/PoE/Micro v2 is a miniature surge arrester, designed to 100-BaseT LAN networks using 5th or 6th category UTP cables. It has a built-in cable with RJ-45 jack, which allows easy connection. Ideally suited for use with IP cameras in CCTV systems to protect them against surges, lightning, and the use of stun guns. Small dimensions allow installation in camera deep bases or small hermetic housings. It is recommended for protect LAN cables and devices with Ethernet installed outside buildings. The surge arrester individually protects each pair of data transmissions by eliminating internal surges above 3.5V. Also discharges high surge impulses of up to 2kA to the ground for cable each conductor of the cable (12kA totally).

Version 2 has been designed from scratch with protective circuits and housing, to increase the level of surge protection and improve mechanical properties.

Specially designed solutions protect Switches and LAN devices against surges in PoE power supply circuits. This applies to all cables and most PoE standards. Lines 4-5 and 7-8 are connected to each other because LAN 100Base-T uses them only to supply PoE.

The device does not provide continuation of the FTP cable shield. If such functionality is required, it is necessary to use the standard product series PTF-51 or PTF-51/DIN.

The surge arrester in the PRO version is designed for installations where any the LAN devices or a part of the cable are located outside the building. Such an installation is exposed to receiving high-value surge currents by flashing from other wires or metal structures. However, it is not recommended if the LAN device is mounted on a metal structure (pole, metal building, etc.). We recommend the EXT surger arrester for such installations.

To ensure an adequate level of protection, it is necessary to connect the surge arrester to a local ground. You can also use a PE protective line. Do not connect the PTF-51 to the lightning conductor circuits and create a grounding point near the grounding of the lightning conductor circuit.



Surge arrester for IP camera


Surge protection for Ethernet - manufacturer

Examples of using


Data lines
Supported channels 1
Compatibility with Network 10Base-T, 100Base-T, twisted pair 5, 5e, and 6th categories
Input connector (Unprotected side) RJ-45
Output connector (Protected side) Cable with RJ-45 plug
Rated Voltage DC (line-ground) UN 90V DC
Maximum voltage (line-ground) UC 110V DC
Protection level 1kV/μs (line-ground) UP 600V
Surge current (8/20µs, line-ground ) Iimp 2,5kA
Rated Voltage DC (line-line) UN 3,3V DC
Maximum voltage (line-line) UC 3,5V DC
Protection level 1kV/μs (line-line) UP 20V
Surge current C1 (8/20µs, line-line ) Iimp 100A
Protected lines 1-2, 3-6
Capacitnance (line-line) @1MHz 6-15pF
Capacitnance (line-ground) @1MHz 1-2pF
Series resistance 2,2Ω / line
Rated current IN 300mA / line
Protection level 2 (GDT + TVS)
PoE protection
Rated Voltage DC (line-line) UN 57V DC
Maximum voltage(line-line) UC 64V DC
Protection level UP 93V
Surge current (8/20µs, line-line) Iimp 100A
Surge current (8/20µs, line-ground) Iimp 2,5kA
Protected pairs (1+2)-(3+6), (4+5)-(7+8)
Protected PoE standards IEEE 802.3af/at/bt-type 3 (HiPoE, UPOE)
Common features
Dimensions 56 x 31 x 27.5 (mm) - housing only
Application Inside, Outside in additional Enclosure IP66
Mounting Standalone
Housing tightness IP40
Operating temperature -30ºC~60ºC

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