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In modern electrical installations, safety is paramount. One critical device that protects people and equipment from electrical faults is the RCBO (Residual Current Operated Circuit-Breaker with Integral Overcurrent Protection). The international standard that defines the requirements and tests for these devices is IEC 61009-1 . What is IEC 61009-1? IEC 61009-1 – full title "Residual current operated circuit-breakers with integral overcurrent protection for household and similar uses (RCBOs) – Part 1: General rules" – is an international standard published by the International Electrotechnical Commission (IEC) .
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