Automatic Change over Switch

Automatic Change over Switch is a power switching device that is capable of automatically switching loads to a backup power source when a fault or abnormality in the main power source is detected to ensure the continuity and reliability of power supply. This type of switch is often used in applications that require high reliability and continuous power supply, such as data centers, hospitals, airports, and other important facilities.

Model:STSF-125

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Product Description

ITEM	changeover switch STSF-63 ;STSF-125
Rated Working Current	16A,20A,32A,40A,63A ; 63A,80A, 100A, 125A
Pole	1P,2P,3P,4P
Rated Working Voltage	230/ 400V
Controling Voltage	AC230V/380V
Rated Insulation Voltage	AC690V
Transfer Time	≤2S
Frequency	50/60Hz
Operating Model	Manual
ATS Level	CE
Mechanical Life	10000 times
Electrical Life	5000 times

Principle of operation

The operating principle of an Automatic Change over Switch usually involves the following steps:

Power detection: The automatic transfer switch will continuously monitor the status of the main power supply, including parameters such as voltage, current and frequency.

Fault determination: When there is a fault or abnormality in the main power supply, such as low voltage, high current or unstable frequency, the automatic transfer switch will immediately determine and respond.

Switching operation: Once it is determined that there is a problem with the main power supply, the automatic transfer switch will quickly switch to the backup power supply to ensure continuous power supply to the load.

Recovery and reset: When the main power supply returns to normal, the automatic transfer switch can choose whether to switch the load back to the main power supply according to preset conditions and logic.

Types and Features

There are various types of automatic transfer switches, each with its own unique characteristics and applicable scenarios:

PC-class automatic transfer switch: mainly used in occasions that require high reliability and continuous power supply, such as data centers, hospitals and so on. It is characterized by fast switching and zero flying arc, which can ensure the continuity and safety of power supply.

CB class automatic transfer switch: mainly used in general industrial and commercial occasions, such as office buildings, shopping malls, etc.. It has overload, short-circuit and other protection functions, which can ensure the normal operation of power equipment.

In addition, the automatic transfer switch has the following characteristics:

Automation: it can automatically detect the power status and carry out switching operation without manual intervention.

Reliability: Made of high quality materials and advanced technology, it has a long service life and stable performance.

Flexibility: it can be customized and configured to meet the needs of different occasions.

Automatic Change over Switch