Problem addressed
Protector categories, voltage names, connector shapes and actual ratings can be confused. Installation is difficult to finalize without clear distribution and earthing conditions. Select for the real circuits rather than combining every product category into a fixed kit.
Solution benefits
- Match protection to each circuit
Select protectors separately for power, Ethernet and control circuits. - Coordinate power and signal planning
Include circuit ratings, loads and earthing conditions in the protection design. - Choose separate or combined devices
Use separate devices where appropriate; evaluate a combined protector only if both sides match. - Support inspection and maintenance
Maintain a device and installation-location list. Monitoring requires compatible detection contacts.
Suitable applications
- Equipment cabinets requiring coordinated power, Ethernet and control wiring.
- Outdoor devices or long cable runs requiring a surge-protection assessment.
- Existing sites requiring checks of protection devices and maintenance arrangements.
Connection overview

Power circuits → suitable power surge protection → load.
Ethernet / control circuits → matching signal protection → equipment.
Earthing and installation → implement the confirmed protection design.
This is a functional arrangement, not a construction wiring diagram. Follow the confirmed earthing and protection design. Performance depends on correctly matched devices and installation; no configuration guarantees protection against every lightning event.
Equipment selection
Models and optional equipment must be matched to the actual site. These items do not form a fixed kit.
| Equipment | Role and selection conditions |
|---|---|
| Power distribution / signal cabinet AEO-IM9000-S | Plan circuits, mounting, cooling and maintenance access around the actual devices and loads. |
| Modular power surge protector KLK-220-40P, KLK-380-40P | Evaluate the nominal supply system and protection design. The category voltage is not the maximum continuous operating voltage, Uc. |
| Network surge protector | Confirm speed and PoE compatibility separately; an RJ45-shaped connector alone is insufficient. |
| Signal surge protector KLK-101R | Confirm the signal type, electrical ratings and pin assignments for control or acquisition circuits. |
| Combined power / Ethernet surge protector KLK-201/E-12 | Evaluate only when both the power and network sides match. If either side is unsuitable, select again. |
Information needed for selection
Provide supplies and loads, interfaces and signals, enclosure, distribution and earthing details. Status monitoring also requires compatible detection contacts and a connected acquisition device; a product name does not establish alarm capability.
