ATS:Common usage scenarios of dual power switches

Dual power switch
Speaking of dual power switches, they are the "safe" in the field of electrical engineering! Whether it's for home or industrial applications, understanding its operating principles and circuit switching can help you stay on track at critical moments. Today, let's talk about this magical little device that can instantly transform you into an electrician expert!

Basic operation of dual power supply
The dual power indicator lights are both red, indicating that both the primary and backup power sources have power; When the green light is on, it indicates that the common power is being used. When the backup light is off, the backup power supply is on standby.
Open the box door, and both the main and backup power switches are in the closed state. Rotate the handle to point to the commonly used closed state, which means the main power is currently in use.
Do you want to switch to automatic mode? Simple! Turn the switch to automatic mode, and as soon as the main power is cut off, the backup power supply will be immediately connected for seamless switching!
In manual mode, you need to personally rotate the handle to switch power. Don't forget to turn it back to automatic after testing!

Simple dual power switching circuit
Two AC contactors can handle it! When selecting a contactor, remember that the rated current should be greater than the load current, safety comes first!
The working principle is super simple: the main power supply is cut off, the normally closed contacts are reset, the backup contactor coil is powered on, and the backup power supply is put on!
Adding an intermediate relay is more secure! When the main power supply is used, the relay works to control the contactor to close; When the power is cut off, the relay resets and the backup contactor is put into operation.

Dual power automatic switching circuit
Automatic circuit switching, that's really worry free! The intermediate relay and contactor cooperate seamlessly, and when the main power is cut off, the backup is immediately put on top, seamlessly connecting!
There are many application scenarios: switching between two sets of batteries, temporary power supply on construction sites, and even fire-fighting facilities cannot do without it!
💬 A netizen asked, "Is it easy to break?" In fact, as long as the components are selected correctly, installed properly, and maintained regularly, the dual power switching circuit can be quite reliable!