This standard is applicable to the quality classification of medium-power small sealed electromagnetic relays. This standard only gives key technical indicators. It is not a complete product standard and must be used together with SJ2845.1~2845.4 and related detailed specifications.
SJ/T 9560.4-1993 history
1993SJ/T 9560.4-1993 Sealed miniature medium power electromagnetic relay--Quality grading standard