Delivered units carry a rating plate with a serial number that ties them to the original order and manufacturing records. Genuine spare parts are identified against those records — you do not need an internal part number to start a request, and the manufacturer's warranty covers original spare parts only.
Requests are handled by the same service organization that runs on-site maintenance and on-call service programs for high-voltage equipment and transformers, coordinated through a customer support center that customers can reach around the clock. A single request can cover the whole chain: identification of the exact variant as built, availability, a quotation with lead time and, where wanted, installation by qualified service personnel.
Adding basic condition data to your request — type designation, construction year, operating-cycle counts, any observed leakage or damage — is the same information the standard service checklist collects, and it helps the service team confirm the correct variant first time.
Example: after a routine inspection, the operator of a 145 kV live-tank circuit breaker submits the serial number from the rating plate together with the recorded operating-cycle counts. The service team matches the unit to its manufacturing records, identifies the exact operating-mechanism variant fitted to that breaker, and returns availability and a quotation with lead time — with on-site installation by a service technician as an option. The same path applies to any equipment family, from GEAFOL cast-resin transformers to gas-insulated switchgear.