標準號：SIS SS EN 50 042-1989
中文標準名稱：工業用低壓成套開關設備和控制設備．終端標識．外部終端 相關電子電路元件和接觸
英文標準名稱：Low-voltage switchgear and controlgear for industrial use —Terminal marking —Terminals for externa! associated electronic circuit components and contacts
發布日期：1989/9/13 12:00:00
實施日期：1999/12/31 12:00:00
適用范圍：This standard applies to switching devices which are able to operate only when completed with external associated electronic circuit components and contacts.The rules in this standard apply only to terminals for external associated electronic circuit components and contacts. These are a supplement to the general rules for the marking:of control supply terminals (see EN 50 005, clause 3.1),and of terminals for internal auxiliary contact elements (see EN 50 005, clause 4.2).The use of this standard is recommended where terminal marking is a requirement of the relevant standard for switching devices or is usual practice.