Bipolar switches are used for lighting switches and can also be used for socket power switches.
Determined according to needs, a single-pole switch can only control one line, and a double-pole switch can control two lines separately. A single-pole switch saves half of the volume compared to a double-pole switch. A single-pole switch is a rocker switch that controls one branch. A double-pole switch is a switch with two rockers that controls two branches. A single-pole switch generally controls Live wire, while the two-pole switch is controlled at the same time by the live wire and zero wire, but both of them will trip as long as the load specified by the switch is exceeded, which plays a safety role.
The number of poles of a single-pole switch refers to the number of lines that the switch breaks (closes) the power supply. For example, for a 220V single-phase line, a single-stage switch can be used to break the phase line (live wire, L line), and the neutral line (N line) does After the switch, a 2-level switch can also be used to open and disconnect the phase line and the N line at the same time. Corresponding to 3-phase 380v, there are 3 or 4-level switch usage conditions respectively. The switch here generally refers to a circuit breaker.
Their respective uses:
1. Double pole switch
A dual-control switch is a switch with two contacts (that is, a pair) of normally open and normally closed at the same time. Usually two dual-control switches are used to control a lamp or other electrical appliances, and there can be two switches to control the switches of lamps and other electrical appliances.
For example, turn on the switch when going downstairs, and turn off the switch when going upstairs. If you use a traditional switch, you have to run downstairs to turn off the light if you want to turn off the light. Using a dual-control switch can avoid this trouble. The dual-control switch is also used to control the lamps that need to be ignited forcibly in the emergency lighting circuit. The two ends of the dual-control switch are connected to dual power supplies, and one end is connected to the lamps, that is, one switch controls one lamp.
2. Single pole switch
Single control is an ordinary switch, one switch controls one light, and dual control is used where two switches control one light.
Post time: Nov-08-2021