SN EN 50123-4:2003現行
Railway Applications - Fixed Installations - D.c. Switchgear - Part 4: Outdoor D.c. Switch-disconnectors, Switch-disconnectors And Earthing Switches
出版：Swiss Standards
專家解讀視頻
Defines requirements for outdoor d.c. switch-disconnectors, disconnectors and earthing switches for use in outdoor fixed installations of traction systems.
AMD 1 2013 is only available in English & French. (01/2014)
DIN EN 50123-4:2003 - Identical
NF EN 50123-4:2004 - Identical
NBN EN 50123-4 Ed. 1 (1999) - Identical
I.S. EN 50123-4:2003 - Identical
UNE EN 50123-4:2004 - Identical
SS EN 50123-4 Ed. 2 (2003) - Identical
NEN EN 50123-4:2003 - Identical
BS EN 50123-4:2003+A1:2013 - Identical
NBN EN 50123-4:2003 - Identical
BS EN 50123-4:2003 - Identical
DIN EN 50123-4 (2003-09) - Identical
