1.1 In general, this standard applies to automatic electrical controls for household and similar use, including
electrical controls for heating, air conditioning, and similar applications.
1.1.1 This standard applies to the inherent safety; to the operating values, operating times, and operating sequences where such are associated with equipment safety; and to the testing of automatic electrical control devices used in, or in association with, household or similar equipment.
This standard is also applicable to controls for appliances within the scope of IEC Publication 335-1: Safety of Household and Similar Electrical Appliances, Part 1: General requirements.
Throughout this standard the word "equipment" means "appliance and equipment".
1.1.2 This standard applies to automatic electrical controls, mechanically or electrically operated, respon-sive to or controlling such characteristics as temperature, pressure, passage of time, humidity, light, electrostatic effects, flow, or liquid level, current, voltage or acceleration. It also applies to controls incorporating electronic parts.
1.1.3 This standard applies to starting relays, which are a specific type of automatic electrical control, designed to switch the starting winding of a motor. Such controls may be built into, or be separate from, the motor.
1.1.4 This standard applies to manual controls when such are electrically and/or mechanically integral with automatic controls.
Requirements for manual switches not forming part of an automatic control are contained in IEC Publication 328: Switches for Appliances.
1.2 This standard applies to controls with a rated voltage not exceeding 660 V and with a rated current not
exceeding 63 A.
1.3 This standard does not take into account the response value of an automatic action of a control, if such a
response value is dependent upon the method of mounting the control in the equipment. Where a response value is of significant purpose for the protection of the user, or surroundings, the value defined in the appropriate household equipment standard or as determined by the manufacturer shall apply.