switch

Abstract

The invention discloses a switch, which is composed of a main switch and a changeover switch integrated with it in the same box body. switch and other automatic control switches, or the main switch is a manual delay switch. As an improvement: the transfer switch is a manual switch, such as a single-pole single-throw switch or a single-pole double-throw switch. When a certain electrical appliance is suddenly damaged, the transfer switch can be used to transfer the circuit to the standby electrical appliance immediately, so that people's life, work, and study will not be affected, and there is no need to risk repairs and replacements under harsh conditions, which is for the safety of people's lives It provides protection and is widely used in wall switches in stairs, corridors, basements, doorways, garages, etc., and other places that require backup electrical appliances.

Description

Technical field [0001] The invention relates to electrical equipment, in particular to a switch capable of connecting main electrical appliances and standby electrical appliances, especially a wall switch. Background technique [0002] Such as figure 1 As shown, the light bulb in the staircase is connected in series with the switch and then connected to the circuit. Because the switching frequency of the light bulb in the staircase is very high, the light is often turned on and off, and the inrush current when the light is turned on is very large, which is very easy to burn the filament. The damage time is generally at night again, and it is difficult to change the light bulb at night, which brings great inconvenience to people's going up and down stairs. [0003] This situation also exists in places such as stairs, corridors, basements, doorways, and garages. Contents of the invention [0004] The purpose of the present invention is to provide a switch that can connect ...

AI Technical Summary

Problems solved by technology

[0002] like figure 1 As shown, the light bulb in the staircase is connected in series with the switch and then connected to the circuit. Because the switching frequency of the light bulb in the staircase is very high, the light is often turned on and off, and the inrush current when the light is turned on is very large, which is very easy to burn the filament. The damage time is generally at night, and it is difficult to replace the light bulb at night, which brings great inconvenience to people's going up and down stairs.

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