BS EN 50152-1:2008 Railway applications. Fixed installations. Particular requirements for a.c. switchgear. Single-phase circuit-breakers with Un above 1 kV
2012BS EN 50152-1:2012+A1:2013 Railway applications. Fixed installations. Particular requirements for alternating current switchgear. Circuit-breakers with nominal voltage above 1 kV
2008BS EN 50152-1:2007 Railway applications — Fixed installations — Particular requirements for a.c. switchgear — Part 1: Single-phase circuit-breakers with Un above 1 kV
1999BS EN 50152-1:1999 Railway applications - Fixed installations - Particular requirements for a.c. switchgear - Single-phase circuit-breakers with Um above 1 kV