IEC 61009-2-1:2024

IEC 61009-2-1:2024 applies to residual current operated circuit-breakers with integral overcurrent protection for household and similar uses (hereafter referred to as RCBOs), classified according to IEC 61009-1:2024, 4.1.1. RCBOs according to this document are intended for voltages not exceeding 440 V AC with frequencies of 50 Hz, 60 Hz or 50/60 Hz and currents not exceeding 125 A and rated short‑circuit capacities not exceeding 25 000 A for operation at 50 Hz or 60 Hz. This second edition cancels and replaces the first edition published in 1991. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: a) harmonization of all clauses between the IEC 61008, IEC 61009 and IEC 60755 series using blocks and modules approach; b) harmonization of all tables and figures between the IEC 61008, IEC 61009 and IEC 60755 series; c) terms and definitions are now referred to IEC 62873-2; d) modification of Subclause 4.1 for classification according to supply conditions; e) specific tests for operating characteristics (9.9) of RCBO according to classification 4.1.1; f) specific test conditions for temperature-rise (9.8), verification of trip-free (9.15), surge current tests (9.19), reliability (9.20) and ageing (9.21).