低压保险丝 第3部分：非熟练人员操作保险丝的补充要求（主要用于家庭和类似用途的保险丝） A 至 F 保险丝标准化系统示例

[中文适用范围]： 本文件规定了非熟练人员使用的低压熔断器的补充要求（主要用于家庭或类似应用），其中包括标准化熔断器系统A至F的示例。本部分仅适用于"m"熔断器。非熟练人员缺乏技术知识或足够的经验。为避免电力可能造成的危险，相关的熔断器标准部分应提供在服务中最大安全的要求。IEC 60269-3提供了四个供非熟练人员使用的系统。关于熔断器安全操作的说明由制造商文献提供。所有系统都提供了各自的机械解决方案，以避免使用额定电流更高的熔断器（不可互换性），从而确保电缆和线路的保护。申请人需小心更换为相同类型的熔断器。本部分适用于以下熔断器系统：熔断器系统A（D型熔断器系统）、熔断器系统B（圆柱形熔断器，NF圆柱形熔断器系统）、熔断器系统C（圆柱形熔断器，BS圆柱形熔断器系统）、熔断器系统F（用于插头的圆柱形熔断体，BS插头熔断器系统）。 [外文原描述]： IEC 60269-3:2024 CMV contains both the official standard and its commented version. The commented version provides you with a quick and easy way to compare all the changes between IEC 60269-3:2024 edition 5.0 and the previous IEC 60269-3:2010+AMD1:2013+AMD2:2019 CSV edition 4.2. Furthermore, comments from IEC SC 32B experts are provided to explain the reasons of the most relevant changes, or to clarify any part of the content. IEC 60269-3:2024 is divided into four fuse systems, each dealing with a specific example of standardized fuses for use by unskilled persons. This part applies to “gG” fuses only. Unskilled persons do not have technical knowledge or sufficient experience. To avoid dangers, which electricity may create, the relevant part of the fuse standard shall provide requirements for maximum safety in service. IEC 60269-3 provides four systems for use by unskilled persons. Instructions for the safe operation of fuse-links are provided in the manufacturer’s literature. All systems provide their own mechanical solution to avoid the use of a fuse-link with higher current rating (non-interchangeability) whereas the protection of cables and lines is ensured. The applicant is required to take care to replace a fuse-link by the same type. The content of the corrigendum 1 (2025-11) has been included in this copy.