4-channel surge protector module for LAN / Ethernet, PTF-54-EXT/PoE

The PTF-54-EXT series modules are protective modules that offer the highest protective effectiveness thanks to MOSFET technology. They are designed to protect LAN devices installed outdoors, on metal structures or poles, and in industrial environments, where, in addition to typical surges, there are also high potential differences between local grounding points.

The MOSFET fuses used disconnect the protected side circuits from the unprotected side in a very short time, allowing the maximum amount of surge to be diverted to the ground, resulting in the voltage received by the protected devices being several times lower than in the case of conventional solutions. Additionally, all equalizing impulses generated between connected LAN devices during discharges and the activation of generators, UPSs, or heavy industry machines are eliminated.

Like the PRO series, they have increased surge resistance for each wire of the cable. Directly diverting large charges without intermediary elements (looping through transformers or coupling through diode circuits) ensures total protection at a level of 2.5kA per wire.

Compared to previous series, the transmission and durability parameters for long-term current loads have been significantly improved. Printed circuits with impedance control and better quality RJ-45 sockets provide lower crosstalk and attenuation of transmission lines, while new solutions and components ensure proper handling and protection of PoE up to 60W (HiPoE).

Based on the PTF-54-EXT/PoE modules, it is possible to build surge protection systems for LAN networks of 10Mbit or 100Mbit, which serve to protect, among others, computers, switches, PLC controllers, industrial television systems, and other devices installed on grounded metal structures.

Additional equipment includes circuits that protect devices powered by passive or active PoE lines, where damage can occur due to induced surge currents during lightning strikes, but also due to damage to the PoE power supply. The PTF-54 series modules work with PoE power in many IEEE standards, including: 802.3af, 802.3at, and 802.3bt - type 3 (HiPoE, UPOE). MOSFET technology is not used in PoE circuits; if it is also necessary, the PTF-64 system should be used - dedicated to Gigabit Ethernet networks.

The protection module is compatible with Ethernet networks 10Base-T and 100Base-TX and can be used with UTP or FTP cabling, category 5, 5e, 6, and 6a - thanks to the use of shielded sockets, it ensures full continuity of the cable shielding. Due to its use solely for PoE power, pairs 4,5 and 7,8 have been grouped - the module cannot be a component involved in measuring cabling parameters. For installations requiring measurements involving protectors, PTF-64 products are recommended.

The module is designed for installation in metal enclosures PTU/PTF-5-MBOX, PTU/PTF-5-MBOX/DIN (1 piece), and in panels PTU/PTF-5-RACK (up to 4 pieces), creating complete multi-channel protection systems. By using modules of different models in one panel, we obtain systems with varied purposes and protection levels.

The grounding of the PTF-54 module is done using the mounting screws of the Rack enclosure, making any expansion or replacement of the module very easy and not requiring additional actions. The connection of the entire device to the ground is made using the included wire, which is attached to a common grounding point.

The protected and unprotected sides are equipped with RJ-45 sockets, allowing the modules to be connected to other patch panels that serve as terminations for LAN cables. However, standard patch panels with LSA (Krone) connectors should not be used, as the durability of their printed circuits is very low, and in the event of a surge, there is a risk that they will be damaged.

The product is tested according to categories D1, C2, C1, B2. It is intended for use at the boundaries of LPZ0/LPZ1 zones or higher.

Example of module installation in the PTU/PTF-5-RACK enclosure

Example of module installation in the PTU/PTF-5-MBOX or PTU/PTF-5-MBOX-DIN enclosure

Technical specification

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