Kumwell KZ23.PK2.UN230.ds is a single-phase surge arrester type 3 according to EN 61643-11 and Class III according to IEC 61643-11 suitable for TNS and TNC systems.
It is designed for universal application for protection of all electrical appli-ances connected to L.V. supply system against impulse surge effects. It is possible to supply this arrester for different nominal voltage (different from 230V/50Hz) on a special demand.
The function failure of varistor is indicated by target disconnection of mec-hanical thermal fuse which react to varistor overheating above c. 120°C.
|MOV Surge Protection for DC Power|
|Nominal Voltage||UN||230 V AC|
|Max. continuous operating voltage||UC||275 V AC|
|Nominal discharge current ln (8/20)||In||3 kA (L/N, L/PE)|
|5 kA (N/PE)|
|Combined impulse||Uoc||6 kA (L/N, L/PE)|
|10 kA (N/PE)|
|Voltage Protection level at Uoc||UP||< 1 kV (L/N)|
|< 1.2 kV (L/PE)|
|< 1.2 kV (N/PE)|
|Power loss at winding temp. 20 °C||< 0.5 W|
|Response time||tA||< 25 ns (L/N)|
|< 100 ns (L/PE, N/PE)|
|Recommended back-up fuse||16 A|
|Temporary overvoltage (TOV)||UT||335V/5 s (L/N)|
|1200+UO/200 ms (L/PE)|
|Operating temperature range||
||-40°C to + 80°C|
|Mounting on||Din rail 35 mm|