Galvanic isolation

Galvanic isolation

Protect expensive equipment from excessive surges caused by thunderstorms and potential differences.

No one can protect themselves against a hit, but the vast majority of injuries are due to a lightning strike up to several kilometers away, where a very short but powerful surge occurs through the copper cable connection. However, there may also be strong surges from the power supply, and damage usually goes beyond the weakest link in the chain, for example. network equipment such as routers and switches.

The ongoing development of electronic technology results in highly advanced electronic equipment in companies and our homes in the form of video, audio, security, computers and appliances. Miniaturization of these products also makes them susceptible to interference from lightning and load shifts.

Therefore, the right protection unit can save a lot of money and time.

Pass-through device that provides galvanic isolation can greatly benefit also from unintentional potential differences and poor grounding.

Transient protection transducers (overvoltage protection) are provided with a number of powerful transsorb components that direct the high voltage to the frame.

If the energy in the overvoltage is large, it will also destroy these protection components. Therefore, it is important to review your own installation to find defects and earthing errors for the equipment. If there is no consequence in the installation, an error grounding can result in greater destruction if there is no ground.

Galvanic isolation
There are 13 products.
RJ45 Surge Protector - lightning protection, IP67, PoE, Gigabit

Surge protection - NOT galvanic isolation

Transmits PoE

Standard RJ45 ports – Supports Cat5, Cat5e, Cat6, and Cat7 connectors.

Full 8-pin protection – Ensures stable power and data transfer to PoE devices.

High-quality components – Premium surge protection elements extend the lifespan to approximately five years.

Low insertion loss – Less than 0.2 dB, maintaining high-quality network signal transmission.

Standard desktop installation – Designed for easy and stable placement

Durable aluminum housing – Improves heat dissipation and fire resistance

IP67 waterproof rating – Provides excellent protection against dust, water and harsh environmental conditions.

$75.48
Item number PROT-RJ45-POE-IP67
Physically in stock
RJ45 Surge protector, surge protection - NOT PoE, Gigabit

Surge protection - NOT galvanic isolation

NOT FOR POE - Max DC is 20VDC !!

Standard RJ45 ports – Supports Cat5, Cat5e, Cat6, and Cat7 connectors.

Full 8-pin protection – Ensures stable power and data transfer to PoE devices.

High-quality components – Premium surge protection elements extend the lifespan to approximately five years.

Low insertion loss – Less than 0.2 dB, maintaining high-quality network signal transmission.

Standard desktop installation – Designed for easy and stable placement

Durable aluminum housing – Improves heat dissipation and fire resistance

IP67 waterproof rating – Provides excellent protection against dust, water and harsh environmental conditions.


Working Voltage Un (V) 6/12

Limiting Voltage Up (V) 20

Normal Discharge Current In (kA) 5

Maximum Discharge Current Imax (kA) 10

Response Time (ns) 1

Insertion Loss (dB) ≤0.2

Transmission Rate (bit/s) 1000M

Working Temperature -40℃~+80℃

Call +45 56 66 20 20 for price
Item number PROT-RJ45-POE-GBIT
Physically in stock
Gigabit network transient protection (overvoltage in connection with thunderstorm) up to 10/100/1000 Mbit

Surge Protection for 10/100 / 1000Mbit network
Review voltage: 5V / 300mA
review loss: Less than 0.2dB
2 x RJ45 female (in / out)
Protected Pin: 1 - 8 (data)
Threshold at 15V
Max Transient current: 5 - 15k Amp
Operating temperature: -40 - +70°C
Moisture: less than 90% RH
Size: 112 x 38 x 30 mm
Weight: 150g
Earth cable of more than 2.5kvmm must be shorter than 1 meter
Earth resistance must be less than 4 ohms
Nothing can protect against a direct lightning strike

$112.43
Item number PROT-RJ45G-PAS
Physically in stock
Modular PoE Surge Protection for 8 Wires - Up to 20KV/10KA

Modular design for easy replacement
Supports 10M/100M/1G/2.5Gbps Ethernet
Supports 802.3af / 802.3at / 802.3bt / UPoE
Protects 8 wires of network cable, including PoE
Protects Up to 20KV / 10KA wave
Error indicator LED
Operating temperature from -40°C to 85°C
DIN rail mounting

$235.87
Item number PROT-RJ45-POE4
On the way in
PoE network transient protection (overvoltage in connection with thunderstorm) up to 1000 Mbit

PoE surge protection for 10/100/1000Mbit networks
Supports PoE voltage 48VDC / 40Watt
Nominal discharge: 2.5kA, max. 5kA (8/20myS)
Response time: less than 1ns (nano-second)
Transmission loss: below 0.2dB
2 x RJ45 female (in / out)
Protected pin: 4/5, 7/8 (power supply + data), 1 - 8 (data)
Operating temperature: -40 - +70°C
Humidity: less than 90% rh
Dimensions: 93 x 55 x 35 mm
Weight: 73g
DIN bracket
Ground cable of more than 2.5kv must be shorter than 1 meter
Ground cable thickness: Min. 2.5 sq.mm
Ground resistance must be less than 4 ohms
Nothing can protect against a direct lightning strike

$82.40
Item number PROT-RJ45G-POE-D
Physically in stock
Galvanic isolation for RJ45 1000MBit network

Isolator for 1000 Mbit network, one port
Insulation on all 4 pairs.
Transient protector - Remember the earth connection (screw)
2 x RJ45 female
Max. Discharge current (fine LL): 40A (8/20 microSec)
Max. Discharge current (coarse LE): 2.5 kA (8/20 microSec)
Residual voltage: <5V (1.2/50 microSec)
Hi-Pot (Pri to Sec) isolation: 1500Vrms, 1mA, 60 seconds
Cannot transmit PoE
Dimensions: 72 x 50 x 25 mm

$225.49
Item number PROT-RJ45ISO100+
Physically in stock
Showing 1-13 of 13 item(s)