WL

12÷36kV
The WL series of medium voltage vacuum circuit breakers for indoor installation are realized using the separate pole technique. Each pole has a vacuum interrupter inside which, thanks to a special production process, is built in the resin directly during the cylinder moulding stage. This construction technique ensure protection of the vacuum interrupter against impact, dust and condensation. Remote control is possible thanks to special electrical accessories (geared motor, shunt opening release, etc.). The operating mechanism, the three poles and the current sensors (if provided) are mounted on a metallic frame without wheels. The device is particularly compact, sturdy and with very low weight.

Main electrical characteristics
Rated voltage kV 12 24 36
Rated power-frequency withstand voltage 50Hz 1min kV (r.m.s.) 28 50 70
Rated lightning impulse withstand voltage kV (peak) 75 125 170
Rated frequency Hz 50-60
Rated current A 630
1250
630
Breaking capacity KA 16
20
16
20
Rated short-circuit current kA 16 - 3s
20 - 3s
16 - 3s
20 - 3s
Peak value kA 40
50
40
50