GB/T 16917.21-2008
ActiveResidual current operated circuit-breakers with integral overcurrent protection for household and similar uses (RCBO) Part 21：Applicability of the general rules to RCBO functionally independent of line voltage
家用和类似用途的带过电流保护的剩余 电流动作断路器（RCBO） 第21部分：一般规则对动作功能与电源电压无关的RCBO的适用性
Application Summary AI generated
This standard specifies the technical requirements and test methods for residual current operated circuit-breakers with integral overcurrent protection (RCBOs) that operate independently of line voltage. It is applied in household and similar electrical installations to ensure these devices reliably detect earth faults and provide overcurrent protection without relying on the power supply for their tripping function. The standard is used by manufacturers and testing laboratories for product certification and compliance verification in low-voltage electrical systems.
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Transparency note: The application summary and key sentences on this page were automatically generated by AI from the standard's original text. This content has not been human-verified and should not be used for compliance or regulatory purposes. Always refer to the official standard document from the issuing authority.