1. Introduction

In modern electrical systems, fixed electrical switches for household and similar purposes are crucial components for ensuring electrical safety and stable operation. The IEC60669-1 standard has emerged to provide a comprehensive and authoritative specification for the design, production, testing, and certification of such switches, becoming an important guideline commonly followed by the global electrical industry.

2. Core Contents of the Standard

2.1 Electrical Performance Requirements

IEC60669-1 strictly regulates the making and breaking capacity of switches. Switches need to be tested by performing multiple operations under specific voltage and current conditions, such as 1.1 times the rated voltage and 1.25 times the rated current, to verify their ability to reliably make and break circuits, ensuring stable operation under normal and overload conditions. At the same time, there are clear limits on the temperature rise of switches to prevent potential safety hazards caused by overheating during long - term energization.

2.2 Mechanical Strength and Structural Requirements

In terms of mechanics, the standard requires switches to have sufficient strength to withstand stresses during installation and use. Tests such as the pendulum hammer impact test and screw tightening test are carried out to check whether the switches will be damaged when subjected to external impacts, screw tightening, and other operations. In addition, the standard also sets specifications for the structural design of switches. For example, creepage distances and clearances need to meet certain values to avoid electrical breakdown due to insufficient insulation distances and ensure the safety of users.

2.3 Requirements for Heat Resistance, Fire Resistance, and Tracking Resistance

Considering the actual usage environment, switches should be able to withstand abnormal heat and fire. The glow - wire test is carried out to simulate a high - temperature environment and test whether the insulating material will be ignited or its performance will deteriorate at high temperatures. For switches with a high protection level, their insulating materials also need to have good tracking resistance to prevent fires and other hazards caused by surface leakage.

2.4 Electromagnetic Compatibility Requirements

Although switches under this standard do not require complex immunity and emission tests due to their own characteristics, it is also ensured that the electromagnetic interference generated during their normal operation is within an acceptable range, avoiding adverse effects on surrounding electrical equipment and ensuring a harmonious and stable electromagnetic environment in the electrical system.

3. List of IEC60669-1 Equipments