Standards
IEC 61643-21
Type of Low Voltage Distribution System
TT TN-C TN-S IT
Suitable For
To protect systems against transient overvoltages or surges from lightning and electrical switching events
Nominal AC Voltage of the System (U<sub>o</sub>)
220 V
Voltage Protection Level ( Up)
900 V
Maximum Continuous Operating Voltage (U<sub>c</sub>)
275 V
Temporary Overvoltage Test Value (U<sub>T</sub>)
334 V
Discharge Current
Nominal 20 kA I (max, 8 / 20 µs) 40 kA
