IEC 60269-2:20 13对授权人员使用的熔断器提供了补充要求，通常设计用于熔断器链路只能由授权人员接触和更换的装置。根据下列熔断器系统供授权人员使用的熔断器也符合IEC 60269-1相应子条款的要求，除非本标准另有规定。本标准分为保险丝系统，每个系统都涉及一个供授权人员使用的标准化保险丝的具体示例: -熔断器系统A:具有带刀片触点的熔断器链路的熔断器（NH熔断器系统）， -熔断器系统B:具有撞针熔断器的熔断器-具有刀片触点的熔断器（NH熔断器系统）， -保险丝系统C:保险丝轨(NH保险丝系统)， -保险丝系统D:保险丝-母线安装底座（NH保险丝系统）， -保险丝系统E:用于螺栓连接的带保险丝链的保险丝（BS螺栓保险丝系统）， -熔断器系统F:具有具有圆柱形接触帽的熔断器链路的熔断器(NF圆柱形熔断器系统)， -熔断器系统G:具有带有偏置刀片触点的熔断器链路的熔断器(BS夹入式熔断器系统)， -熔断器系统H:具有具有“gD”和“gN”特性的熔断器链路的熔断器(J类和时间延迟和非时间延迟熔断器类型)， -熔断器系统I:具有楔形紧固触点的gU熔断器， -熔丝系统J:具有具有“GD CC级”和“GN CC级”特性的熔丝链路的熔丝(CC级延时和非延时熔丝类型)， -保险丝系统K:用于螺栓连接的带刀片的gK保险丝链-高保险丝链额定值从1 250 A到4 800 A（主保险丝-链接）。IEC 60269-2第五版取消并取代了2010年发布的第四版。本版构成技术修订版。与上一版相比，此版本包括以下重大技术变更: 1.熔断器系统A和B:NH aM熔断器链路的功率耗散的修正值； 2.熔丝系统A和B:介绍NH熔丝的尺寸r； 3.增加新的熔断器系统K:gK熔断器-带用于螺栓连接的触点。 关键词:熔断器系统A至K，熔断器的要求 本出版物应与IEC 60269-1:20 06一起阅读。

IEC 60269-2:2013 provides supplementary requirements for fuses for use by authorized persons and are generally designed to be used in installations where the fuse-links are accessible to, and may be replaced by, authorized persons only. Fuses for use by authorized persons according to the following fuse systems also comply with the requirements of the corresponding subclauses of IEC 60269-1, unless otherwise defined in this standard. This standard is divided into fuse systems, each dealing with a specific example of standardized fuses for use by authorized persons:
- Fuse system A: Fuses with fuse-links with blade contacts (NH fuse system),
- Fuse system B: Fuses with striker fuse-links with blade contacts (NH fuse system),
- Fuse system C: Fuse-rails (NH fuse system),
- Fuse system D: Fuse-bases for busbar mounting (NH fuse system),
- Fuse system E: Fuses with fuse-links for bolted connections (BS bolted fuse system),
- Fuse system F: Fuses with fuse-links having cylindrical contact caps (NF cylindrical fuse system),
- Fuse system G: Fuses with fuse-links with offset blade contacts (BS clip-in fuse system),
- Fuse system H: Fuses with fuse-links having "gD" and "gN" characteristic (class J and class time delay and non time delay fuse types),
- Fuse system I: gU fuse-links with wedge tightening contacts,
- Fuse system J: Fuses with fuse-links having "gD class CC" and "gN class CC" characteristics (class CC time delay and non-time delay fuse types),
- Fuse system K: gK fuse-links with blade for bolted connections - High fuse-link ratings from 1 250 A up to 4 800 A (master fuse-links). This fifth edition of IEC 60269-2 cancels and replaces the fourth edition published in 2010. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition:
1. fuse systems A and B: modified values for the power dissipation of NH aM fuse-links;
2. fuse systems A and B: introduction of dimension r for NH fuse-links;
3. addition of new fuse system K: gK fuse-links with contacts for bolted connections. Key Words: fuse systems A to K, requirements for fuses

This publication is to be read in conjunction with IEC 60269-1:2006.