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- Surge Protection Devices
- Surge Protective Device Ex9UE1+2 12.5R 1PN 275
Surge Protective Device Ex9UE1+2 12.5R 1PN 275
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.
System configuration DC | Nie |
System configuration IT | Tak |
System configuration TN | Tak |
System configuration TN-C | Nie |
System configuration TN-C-S | Tak |
System configuration TN-S | Tak |
System configuration TT | Tak |
System configuration other | Nie |
Number of poles | 2 |
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 method | DIN rail (top hat rail) 35 mm |
Construction size | 2 modular spacing |
Remote signalling | Tak |
Signalling at the device | Optic |
Test class | Type 1 + 2 |
Exhausting | Nie |
Integrated backup fuse | Nie |
Energy-coordinated protection effect with regard to the terminal equipment | Nie |
Width in number of modular spacings | 2 |
Power loss [W] | 0.1 |