In the customer's inventory there is a low-voltage switchgear type 8PV from Siemens in which 5 circuit breakers of type 3WN are installed. The spare parts availability of the already discontinued 3WN circuit breakers can unfortunately no longer be guaranteed.

Siemens offers a type-tested retrofit solution for 8PV switchgear, in which the existing circuit breaker can be replaced with prefabricated busbar adapters, new breaker cassettes including current 3WA circuit breakers and a new door. The exchange takes place by qualified Siemens service technicians.