LAN surge arrester to Gigabit Ethernet, DIN rail mounted, PTF PTF-61-EXT / DIN
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1-channel LAN surge arrester mounted on a DIN rail, designed for surge protection of Gigabit Ethernet, compatible with 1000Base-T and 1000Base-TX standards. It contains a direct discharge of large surge currents individually from each of wire conductor. A small amount of intermediary components reduces the scattering and absorption of electromagnetic interference. Very carefully designed multilayer printed circuits, a special production process and modern electronic components, allowed to obtain excellent transmission parameters required in cabling 6 category.

Built-in 3-level surge protection using MOSFET technology, effectively eliminate overvoltages induced in cabling and introduce additional separation for ground loop potentials between LAN devices. MOSFET technology reduces also the level of overvoltages that reaches a protected device (UP voltage level) during overvoltage to a value that is a little higher than the rated operating voltage (Un). Obtaining such parameters is impossible in the case of the most commonly used conventional solutions.

Independent PoE protection circuits eliminate the overvoltages between pairs 1.2 - 3.6 and 4.5 - 7.8 in the LAN cable. This solution protects power supplies of LAN equipment against damage due to lightning surges or uncontrolled voltage increase, for example as a result of damage to the PoE power supply. The solutions used are compatible with each PoE standard, including Hi PoE.

PTF-61-EXT / PoE / DIN is mounted near the LAN end points such as: PCs, PLCs, IPC cameras, radio transmitters, IoT devices. It is equipped with a housing installed on a DIN rail. Grounding of the limiter is carried out by means of a DIN rail, which should be connected to the PE line. Correct connection to the LAN network is also very important, it has been described in the user's manual. Do not reverse the DEVICE side with the LINE side, it may cause a malfunction of the surge arrester or even damage.



LAN network surge protection

Using PTF-61 surge arresters in the protection of single LAN connection


The PTF-61 surge arrester can be used on the LAN switch side, however, for many channels, PTU-6xx or PF-6xx multichannel surge arresters.


Eliminacja przepięć w sieciach Gigabit LAN

Elimination of surges in a 16-point gigabit network


Technical specification

Data line
Number of LAN channels 1
Supported Ethernet standards
10Base-T, 100Base-T, 1000Base-T, 1000Base-Tx
Compatibility with cabling Category 5, 5e i 6 (TIA)
Input connector (unprotected side) High quality shielded RJ-45 socket
Output connector (protected side) High quality shielded RJ-45 socket
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 2kA
Rated Voltage DC (line-line) UN 3.3V DC
Maximum Voltage (line-line) UC 3.5V DC
Protection Level 1kV/μs (line-line) UP
Surge Current (8/20µS, line-line) Iimp 75A (2kA after MOSFET reaction)
Protected lines
1-2, 3-6, 4-5, 7-8
Capacitnance (line-line) @1MHz 5pF
Capacitnance (line-ground) @1MHz 2-3pF
Decoupling Super fast MOSFET fuse
Serial resistance
6Ω / line
Rated Current IN 300mA / line
PoE Line
Rated Voltage DC (line-line) UN 57V DC
Maximum Voltage (line-line) UC 64V DC
Protection Level 1kV/μs (line-line) UP 75V
Surge Current (8/20µS, line-line) Iimp 73A (2kA after MOSFET reaction)
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 2kA
Protected pairs
(1+2)-(3+6), (4+5)-(7+8)
Supported PoE standards
Compatible with all types including Hi PoE
Common features
Dimensions 65 x 30 x 40 (mm)
Application Inside / outside in additional IP66 housing
Mounting Mounted on Din rail
Grounding method Din Rail
Housing tightness IP54
Operating temperature -30ºC~60ºC