Ethernet surge protector, 8 channels LAN / IP-CCTV, PTF-58R-EXT/PoE
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Extreme series surge protectors are the most effective products designed to protect devices mounted on metal constructions and in industrial conditions. They should be used everywhere where, in addition to the risk of overvoltages, voltage potentials may appear between local grounding points. Such phenomena occur when the LAN end devices are mounted on metal constructions, such as poles, halls or towers, where at the moment of lightning between them there is a momentary impulse of compensatory current that closes through the cables. Despite the built-in galvanisation in the form of separating transformers on the physical LAN layer, the breakdown voltage is too high for the separation to be effective. The use of EXTREME series limiters on two sides of the cable gives 1700V isolation for the duration of the overvoltage, thus reducing the risk of damage to the network interfaces.

The hazards described above are also found in heavy industry or railways, where heavy machinery, aggregates or UPSs are also generating large potential differences.

Strength for high pulse currents up to 2kA for each conductor of the LAN cable with direct discharge to the ground, prevents damage to electronics due to the induction of high energy in the conductors or during flashover from other installations. The applied MOSFET technology several times reduces the voltage that can appear on the protected side as a result of dynamic resistance of the silicon components or operation of the protection at elevated temperature.

PTF-58R-EXT/PoE is an 8-channel LAN surge protection, compatible with 10Base-T and 100base-T standards. It includes the 19" Rack base and two PTF-54-EXT/PoE modules and the free space allows mounting two additional modules of a different series to create your own product configuration. Shielded RJ-45 connectors on the protected and unprotected side facilitate both adaptation to the existing system as well as servicing, and further create a continuation of the FTP cable shield.

The product is suitable for UTP or FTP cabling of any category terminated with patch panel or RJ-45 plugs. In 100Base-T Ethernet lines 4-5 and 7-8 are used only for PoE power supply and in PTF-58R they have been grouped to simplify the protective system . When performing LAN certification for categories higher than 5th , it is necessary to disconnect the surge protector from the network - LAN meters will indicate short-circuits of the mentioned lines.

The optional LK-MOUNT angle brackets allow the panel to be mounted at a 45-degree angle on the rear rail of the rack, which is advantageous when using NVR recorders in CCTV installations. This limits the length of patchcords and increases the amount of space in the rack.

The best protection efficiency is achieved by using surge protectors on both ends of the LAN cable and proper earthing. Typically, on the LAN switch side, this multi-channel surge protector is used and on the side of the terminal devices 1-channel protectors. In order to balance the impact strength of the entire LAN line, on the other side of the cable, use a protectors the PRO or EXT series. The use of two EXTREME series protectors at the two ends of the cable provides the highest level of protection but increases the serial resistance of the circuit, which should be taken into account when measuring and loss of power supply PoE.

PTF-58R-EXT/PoE has MOSFET technology only in lines 1-2, 3-6, which is important for data transmission signals and PoE power supply in option A. If MOSFET technology is required in PoE power supply option B or A + B, PTF-68-EXT series protection must be used, where each protective circuit has been equipped with it.

EXT series surge protectors should not be combined with popular patch panels using LSA connectors (Krone) due to the low strength for surge currents of their printed circuits. As endings of LAN cables, use patch panels with Keystone type connectors and patch cords with thick conductors, preferably shielded 6th category.


Surge protection of industrial LAN network

An example of industrial LAN protection


Data line
Number of LAN channels 8
Possibility to exted
Yes, up to 16 channels
Supported Ethernet standards 10Base-T, 100Base-T
Input connector (LINE) Shielded RJ-45 jack
Output connector (DEVICE) Shielded RJ-45 jack
Compatibility with cabling UTP / FTP categories 5, 5e i 6
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 per cable conductor (14kA total for one channel)
Rated Voltage DC (line-line) UN 3,3V DC
Maximum Voltage (line-line) UC 3,5V DC
Protection Level 1kV/μs (line-line) UP 8V
Surge Current (8/20µS, line-line) Iimp 2kA with MOSFET reaction
Protected lines 1-2, 3-6
Capacitnance (line-line) @1MHz 6-15pF
Capacitnance (line-ground) @1MHz 1-2pF
Serial resistance 6Ω / line
Rated Current IN 300mA / line
Protection stages
Decoupling Super fast MOSFET fuse
PoE line
Rated Voltage DC (line-line) UN 58V DC
Maximum Voltage (line-line) UC 64V DC
Protection Level 1kV/μs (line-line) UP 93V
Surge Current (8/20µS, line-line) Iimp 100A
Surge Current (8/20µS, line-ground ) Iimp 2kA
Protected pairs (1+2)-(3+6), (4+5)-(7+8)
Supported PoE standards Compatible with IEEE 802.3af/at/bt-type 3 (HiPoE, UPOE)
PoE loss power on protection circuit

IEEE 802.3af, option A: 0,6W @48VDC
IEEE 802.3af, option B: 0,35W @48VDC

IEEE 802.3at, option A: 1,6W @54VDC
IEEE 802.3at option B: 0,6W @54VDC

IEEE 802.3bt, Typ 3, option AB: 1,2W @54VDC

*) parameters for maximum load

Common features
Dimensions 480 x 41 x 130 (mm)
Application Protection devices installed on metal constructions and industrial environment
Mounting 19" Rack cabinet
Tightness of the housing Not applicable
Operating temperature -30ºC~60ºC

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