What is the application of surge protectors in residential homes?

What is the application of surge protectors in residential homes?

Lightning protection and overvoltage protection

Surge protectors are mainly used in residential homes to prevent damage to electrical equipment caused by transient overvoltage caused by lightning or grid fluctuations. Its core function is to quickly introduce abnormal currents into the earth and achieve household electricity safety through the following methods:

1、 Main application scenarios

1. Protection of the main distribution box

It is usually installed at the main inlet of the household distribution box to provide basic protection for all electrical appliances in the house. Some modern residential communities have pre installed surge protectors in the main power distribution cabinets of the buildings. At this time, power lightning protection plugs can be used as a supplement within the household.

2. Key electrical protection

• Install surge protectors at the sockets of important household appliances such as televisions, refrigerators, and computers to provide additional protection.
• During thunderstorms, it is recommended to cut off electrical power and network connections to enhance safety.

3. Special area protection

Suitable for old residential areas or rural residences with incomplete lightning protection facilities, suitable surge protectors need to be installed at the household power supply. These devices have convenient functions such as 35mm rail installation and hot swappable design.

2、 Mechanism of Action and Technical Characteristics

• Response speed: Nonlinear components such as varistors can reduce impedance in nanoseconds and direct surge currents into the ground.
• Voltage adaptation: Supports 220V/380V AC system, covering household electricity needs.
• Protection range: In addition to direct lightning strikes, it can also cope with power grid fluctuations and instantaneous overvoltage generated by electrical switches.

For modern residences equipped with comprehensive lightning protection systems, existing protective measures can be relied upon within the household; However, old or rural residential buildings need to actively install surge protectors to reduce risks.