This series comprises the 4S1-series sub-miniature slide switches and the 4M1-Series miniature slide switch. Electrical life is 30,000 make and break cycles at full load and contact resistance is 10 mΩ max. initial @ 2-4VDC. Further specifications are provided in the data sheet.
Comment: The UK is closer to deindustrialisation than reindustrialisation
"..have been years in the making" and are embedded in the actors - thus making it difficult for UK industry to move on and develop and apply...