低压开关设备和控制设备 第 4-1 部分：接触器和电机启动器 机电接触器和电机启动器

[中文适用范围]： 本部分IEC 60947适用于以下设备： - 机电接触器和启动器，包括电机保护开关设备（MPSD和IMPSD）； - 接触器继电器的执行机构； - 专门用于接触器或接触器继电器线圈电路的触点； - 专用附件（例如专用接线、专用锁定附件）； 旨在连接到配电电路、电机电路和其他负载电路，其额定电压不超过1000 V交流或1500 V直流。 本文件不适用于： - 直流电动机的启动器； - 接触器的辅助触点和接触器继电器的触点。这些由IEC 60947-5-1覆盖； - 启动器中集成的短路保护设备，不包括MPSD。这些由IEC 60947-2和IEC 60947-3覆盖； - 通过内置热保护（PTC）的控制单元实现的电机过载保护功能。这些由IEC 60947-8覆盖； - 在爆炸性环境中使用设备时的额外措施。这些由IEC 60079系列给出； 本文件的目的是说明： • 设备的特性和组成（第5条）； • 适用于设备的条件，包括： - 其操作（5.2.5）和保护功能（5.2.6、5.7、5.8）， - 其预期环境（6.5、8.3.1）和应用（5.4、附录C、附录D、附录G、附录H、附录I、附录M、附录O），包括安全应用（附录F、附录K、附录L）， - 其结构和性能（第8条），包括减少电击、热危害、能量危害、火灾危害和机械危害的风险、合理可预见的误用、电磁兼容性（EMC）问题、软件错误和安全问题的要求； • 用于确认这些条件已满足的测试，以及这些测试所采用的方法（第9条）； • 设备或产品文档中包含的信息（第6条）。 [外文原描述]： CORRECTED VERSION 2026-03 IEC 60947-4-1:2023 is applicable to the following equipment: - electromechanical contactors and starters including motor protective switching devices (MPSD and IMPSD); - actuators of contactor relays; - contacts dedicated exclusively to the coil circuit of the contactor or the contactor relay; - dedicated accessories (e.g. dedicated wiring, dedicated latch accessory); intended to be connected to distribution circuits, motors circuits and other load circuits, the rated voltage of which does not exceed 1 000 V AC or 1 500 V DC. This fifth edition cancels and replaces the fourth edition published in 2018. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: a) objective in the scope; b) instantaneous only motor protective switching device IMPSD (3.5.33); c) kinds of equipment (5.2.1); d) methods of overload protection of motors (5.2.6); e) adoption of the AC-7d from IEC 61095:2023 (in 5.4.2); f) separately mounted overload relay of a starter (in 5.7.3 b)); g) starter and contactor suitable for use downstream to basic drive module (6.1.2 w)); h) reference to IEC TS 63058 for environmental aspects (in 6.4); i) wiring subject to movement (in 8.1.3); j) use of voltage transient limiting device (8.1.18); k) accessible parts subject to temperature limits (in 8.2.2.3); l) reference to Annex X of IEC 60947-1:2020 for the co-ordination of MPSD with SCPD (8.2.5.4); m) reference to IEC TR 63216 with different EMC environments (8.3.1); n) reference to IEC TR 63201 for the embedded software design (8.4); o) reference to IEC TS 63208 for cybersecurity aspects (8.5); p) update and completion of the measurement method of the power consumption of the electromagnet (9.3.3.2.1.2); q) update of Annex C including rational about AC-3e; r) determination of the critical load current for photovoltaic applications (M.8.7). The content of the corrigendum 1 (2026-03) has been included in this copy.