Miniature surge protector for Ethernet, PTF-51-ECO/PoE/Micro
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The PTF-51-ECO/PoE/Micro is a miniature surge protector, designed to 100-BaseT LAN networks, based on UTP cable of 5 or 6 category. Small dimensions and built-in RJ-45 jack enables quick and easy assembly and concealment of the device in small housings. Ideally suited for the protection of IP CCTV cameras equipped with mount base. The PT51-51-MICRO protects against the effects of overvoltages and surge discharges, as well as acts of vandalism (stun guns). It can be used to protect LAN inside of buildings, protecting end-line devices and switches or radio bridges. The device individually protects each transmission pair, where the suppression over 6V inside them is eliminated.

A special solution protects LAN devices against voltage increase on PoE power lines in any standards. Lines 4-5 and 7-8 are grouped because LAN 100Base-T uses them only to PoE. The PTF-51-Micro protects PoE against an increase voltage above 58V during surge lighting or during damage to power adapter.

The device does not provide shield continuity for the FTP cable, if such continuity is required, it is necessary to use standard products PTF-51 or PTF-51/DIN

To ensure an adequate level of protection, it is necessary to connect a good quality grounding or PE protective conductor.
It is not allowed to connect lightning protection circuits and to create a grounding point of the limiter near the earth of the lightning rod circuit.



Surge protector for Ethernet


Ethernet surge protector

Example of using

Data Protection
Supported channels
Compatibility with Network
100Base-T (100Mbit), twisted pair 5, 5e, and 6 categories
Input connector (line side) Jack RJ-45
Output connector (device side) Short cable with RJ-45 plug
Rated Voltage DC (line-ground) UN 175V DC
Maximum voltage (line-ground) UC 225V DC
Protection level 1kV/μs (line-ground) UP 455V
Surge current C1 (8/20µS, line-ground ) Iimp 100A
Rated Voltage DC (line-line) UN 6V DC
Maximum voltage (line-line) UC 6,8V DC
Protection level 1kV/μs (line-line) UP C3 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 2-3pF
Serial resistance
2,2Ω / line
Rated current IN 300mA / line
PoE protection
Rated Voltage DC (line-line) UN 56V DC
Maximum voltage(linia-linia) UC 64V DC
Protection leve UP C3 93V
Surge current (8/20µS, line-line) Iimp C3 73A
Protected pairs
(1+2)-(3+6), (4+5)-(7+8)
Protected PoE standards
IEEE 802.3af/at - all types up to 60W
Common features
Dimensions 51 x 31 x 24 (mm) - without cable
Application Inside / outside in additional IP66 housing
Mounting Standalone
Housing tightness
Operating temperature -30ºC~60ºC

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