IEC-61810-2-1 Complete Document History
Electromechanical elementary relays - Part 2-1: Reliability - Procedure for the verification of B10 values

Complete Current Edition:
   EDITION 2.0 - Part 2-1: Reliability - Procedure for the verification of B1 - May 1, 2017

Obsolete Revision Information:
   EDITION 1.0 - ELECTROMECHANICAL ELEMENTARY RELAYS - Feb. 1, 2011