Company News
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YUYE brand frame circuit breaker passed the national CQC certification
Frame circuit breaker (ACB) Frame circuit breaker is also called universal circuit breaker. All its parts are installed in an insulated metal frame, which is usually open. It can be equipped with a variety of accessories. It is convenient to replace contacts and components, and is mostly used i...Read more -
Happy Mid-Autumn Festival to You All
The Mid-Autumn Festival is the traditional festival of the Chinese nation, here we One Two Three Electric Co., Ltd. wish everyone a happy Mid-Autumn Festival, happy family. In order to celebrate the festival, 123 Electric Co., Ltd. will take a holiday in accordance with the national regulations. ...Read more -
What’s the difference among the ATS, EPS and UPS? How to choose?
ATS (YES1 series products) referred to as Automatic Transfer Switch or Dual Power Transfer Switch is mainly made of the components of molded case circuit breaker MCCB (CB) or isolating switch (PC). According to the provisions of the national standard GB/T14048.11-2008, it is divided into three ...Read more -
Design Principle and Wiring Diagram of Dual Power Automatic Transfer Switch ATSE
The selection of automatic transfer switching appliances (ATSE) should mainly meet the following requirements: When using PC-class automatic transfer switching appliances, should be able to withstand the expected short-circuit current of the circuit, and the rated current of ATSE should not be l...Read more -
Special Type ATSE- New Integration Special Type ATSE Dual Power Supply Configuration Scheme
New integration special type ATSE dual power supply configuration scheme is a circuit breaker with parallel two sets of single module spring operation mechanism. Pole adopts two vacuum arc extinguishing chambers in each phase as one solid seal design, and the upper contact arm is separated from ...Read more -
The Requirements of Dual Power Switch for Switching Pole Number
Whether the neutral line needs to be disconnected when switching between transformer power supply and generator power supply (including the use of dual power automatic transfer switch) depends on a number of conditions or factors, including the type of grounding system of the two power loops, whe...Read more -
Why is Automatic Transfer Switch （ATSE ）Important?
What is the automatic transfer switch ATSE? An automatic transfer switch or ATSE is a transfer switch used in conjunction with a diesel generator or other backup power supply to automatically switch between the power supply and the generator or backup power supply in the event of a power failure....Read more -
Single – Phase Leakage Protector Can be Connected to the Three – Phase Four – Wire Circuit
Single-phase leakage maintainer (made up of miniature-circuit-breaker)can not be connected to the three-phase four-wire circuit. The technique has specialized, single-phase leakage switch MCB in the leakage maintenance device inside the zero-sequence current transformer detection is a phase line ...Read more -
New Arrival YUS1-63NJT Automatic Transfer Switch for Household Type
Today we launched a new household double power automatic transfer switch-YUS1-63NJT, this automatic transfer switch to use innovative design concept, and use modular structure design, in line with the use of the majority of household users characteristics, can solve to make up for the previous ...Read more -
New Arrival YUS1-63MA Automatic Transfer Switch for Household Type
One two three electric Co., LTD., we are a professional R& D, production and sales of a variety of dual power automatic transfer switch manufacturers. We are about to launch our first brand new product of the year – YUS1-63MA Automatic transfer switch for household type.This automatic t...Read more -
Cast First Class Automatic Transfer Switch Quality
One Two Three Electric Co,.Ltd as the largest and most professional automatic transfer switch manufacturer in China, the quality of automatic transfer switch determines the future development of our company. Therefore, in the field of automatic transfer switch, we always uphold such a policy: f...Read more -
Automatic Transfer Switch Working Mode and Fire Protection Function
1.Automatic transfer switch (ATS)working position of contact Three-position：Contact can stay in the main and standby power on and double three working position. All the motor drives are three-position automatic transfer switch without two positions. Two-position: Ccontact can only stay in two wo...Read more