Surge Protective Device Ex9UE1+2 12.5 1PN 275

103334
8592765033352

The Ex9UE1+2 12.5 line is a group of Class I+II Surge Protective Devices. They are intended as a protection against indirect and low intensity direct hits of lightning strokes. In standard three phase TN-C grid, they provides protection to LPL III, IV requirements given in EN 62305 with total lightning current introduced into electrical installation of 37.5 kA and total lightning stroke current 75 or 100 kA based on physical confi guration and mutual position of grounding point of lightning rod, grounding point of the electrical installation and place of SPD installation. The design of Ex9UE1+2 12.5 is based on high energy Metal Oxide Varistors. Such design provides low response time and ensures characteristics for both classes I and II. The modular design with plug in inserts allows simple and quick replacement of function modules in case of MOV is beyond if its lifespan due to high intensity or often occurrence of overvoltage peaks.

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System configuration DCNe
System configuration ITDa
System configuration TNDa
System configuration TN-CNe
System configuration TN-C-SDa
System configuration TN-SDa
System configuration TTDa
System configuration otherNe
Number of poles2
Lightning impulse current (10/350 µs) [kA]12.5
Max. continuous voltage AC [V]275
Max. continuous voltage DC [V]-
Nominal voltage AC [V]275
Nominal voltage DC [V]-
Voltage protection level L-N [kV]1.5
Voltage protection level N-PE [kV]1.5
Follow current extinguishing capability [kA]100
Specific energy (W/R) [kJ/Ohm]156.25
Max. conductor cross section solid (solid, stranded) [mm²]50
Max. conductor cross section flexible (fine-strand) [mm²]50
Mounting methodDIN rail (top hat rail) 35 mm
Construction size2 modular spacing
Remote signallingNe
Signalling at the deviceOptic
Test classType 1 + 2
ExhaustingNe
Integrated backup fuseNe
Energy-coordinated protection effect with regard to the terminal equipmentNe
Width in number of modular spacings2
Power loss [W]0.1