请注意:此版本的所有临时修订版将在您购买时提供。1.1这些要求包括仅用于交流电路的接地故障电路断路器，其中一根电线按照以下要求接地: 符合国家电气规范。这些设备适用于120伏交流电或120/240伏交流电、60赫兹电路。1.2这些要求不包括用于变压器供电电路的接地故障断路器，该变压器的绕组与每个断路器完全绝缘 另外1.3这些要求所涵盖的接地故障断路器是一种装置，其功能是在故障电流到达负载时中断与负载的电路 接地超过某个预定值，该值小于操作电源电路过电流保护装置所需的值。 1.4包含新特性、特性、组件、材料或系统的产品，或与本标准要求涵盖的特性、特性、组件、材料或系统不同的产品，以及 涉及火灾、触电或人身伤害风险的，应使用适当的附加组件和最终产品要求进行评估，以 保持本标准意图最初预期的安全水平。特性、特性、组件、材料或系统发生冲突的产品 本标准的具体要求或规定不符合本标准。要求的修订应以一致的方式提出和采用 制定、修订和实施本标准所采用的方法。

Please note: All interim revisions for this edition available at time of your purchase will be included.1.1 These requirements cover ground-fault circuit-interrupters intended for use only in alternating-current circuits wherein one of the wires is grounded in accordance with the National Electrical Code. These devices are intended for use on 120 Vac or 120/240 Vac, 60 Hz circuits.1.2 These requirements do not cover ground-fault circuit-interrupters intended for use in circuits served by a transformer having windings wholly insulated from each other.1.3 A ground-fault circuit-interrupter as covered by these requirements is a device whose function is to interrupt the electric circuit to the load when a fault current to ground exceeds some predetermined value that is less than that required to operate the overcurrent protective device of the supply circuit.1.4 A product that contains features, characteristics, components, materials, or systems new or different from those covered by the requirements in this standard, and that involves a risk of fire or of electric shock or injury to persons shall be evaluated using appropriate additional component and end-product requirements to maintain the level of safety as originally anticipated by the intent of this standard. A product whose features, characteristics, components, materials, or systems conflict with specific requirements or provisions of this standard does not comply with this standard. Revision of requirements shall be proposed and adopted in conformance with the methods employed for development, revision, and implementation of this standard.