The Institute for Standardization of Bosnia and Herzegovina, through its Technical Committee BAS/TC 52, Control and switchgear installation, has adopted the second edition of BAS EN IEC 62271-108:2023, High-voltage switchgear and controlgear - Part 108: High-voltage alternating current disconnecting circuit-breakers for rated voltages above 52 kV, which is a translation of the English version of the European standard EN IEC 62271-108:2020.

BAS EN IEC 62271-108:2023, which is part of the IEC 62271 series, applies to high-voltage alternating current disconnecting circuit-breakers for operation at frequencies of 50 Hz and 60 Hz on systems having voltages above 52 kV.

The document identifies which requirements of IEC 62271-1, IEC 62271-100 and IEC 62271-102 are applicable. It also gives the additional requirements specific to these devices.

This standard covers single switching devices which perform the functions of both a circuit-breaker and a disconnector by means of contacts housed in a single enclosure and in which the circuit-breaker contacts in the open position satisfy, or contribute to, the isolating requirements of the disconnector function. The document details the requirements for disconnecting circuit-breaker, identifying where these differ from the separate requirements of a discrete circuit-breaker and disconnector.

The original texts of the standard were prepared by the International Technical Committee TC 17/SC 17A, Switching devices.