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  • 20A~3200A Suyang Automatic Transfer System
  • 20A~3200A Suyang Automatic Transfer System

20A~3200A Suyang Automatic Transfer System

Yangzhou Suyang Electric Co., LTD has proudly stood the test of time since its establishment in 2006. The mission of Suyang is become a leading company in providing outstanding ATS (the automatic transfer switching equipment) at a fair price. Its integrity is never compromised and it makes a positive contribution to society.Suyang creates partnerships to better connect with their customers. Suyang will support their dealers at national and regional trade show events to promote awareness of their products in the market place. It place a strong emphasis of its products on quality . All equipment will be inspected and tested, which should be conformed to its own quality standards , like “CCC”, “CE”,”ROHS” and so on .

Automatic Transfer Switch (ATS) is used which operation voltage is no more than 660VAC, and may transfer with load. The ATS rated current series is 40A, 63A, 80A,125A, 160A, 250A, 400A, 630A, 800A, 1000A, 1250A, 1600A, 2000A to 4000A, be divided up two types with 3 poles and 4 poles. The ATS of 40~125A is defined with ‘N’; 160~400 is defined with‘T’; 630A~2000A is defined with “M”. Above 2000A is also available.

Automatic Transfer Switch can automatically transfer load from mains power to emergency power without operator intervention. When mains power fails or voltage drop below 80% of normal voltage, the ATS will start emergency generator, after a preset time of 0 to 10 seconds(adjustable). At rated speed, the ATS will transfer load to emergency power with available size ranging from 40A to 4000A. There is a switch suitable for every project’s need.

ATS is an integral part of the power generation process, allowing smooth and immediate transfer of electrical current between multiple sources and the load. When the generator is operating, the transfer switch prevents dangerous feedback of current to the utility's system. It also ensures that different power sources are fully synchronized before their power is combined or loads are transferred, which is imperative for safe operation.

The transfer switch senses when utility power is interrupted, and starts up the generator if the utility power remains absent. In about five to ten seconds, when the generator is producing full power, the transfer switch disconnects the load from the utility and connects it to the generator, restoring electricity to the load. The transfer switch continues to monitor utility power, and when it is restored, switches the load from the generator back to the utility. Once the generator is disconnected, it goes through a cool-down routine and is automatically shut down.

Choosing the right ATS for the generator set

1. Generator Set Current: =Genset KVA*1000/Voltage/1.732

2. ATS Size should be 120% of the generator set current.


1) For emergency power usage in building, auto transfer switch(ATS) is essential. ATS can auto transfer load from mains power supplying to emergency power.

2) When the main power supplying failure or voltage drop below 80% of normal voltage, ATS will auto start emergency generator set after a preset.

3) Time of 0 - 10 sec (adjustable according to the users). Once generator reach at rated speed, the ATS will transfer the load to emergency generator sets automatically.

4) The ATS has large variety current.

20A~3200A Suyang ATS

ModelSYK1-20A 4PSYK1-40A 4PSYK1-63A 4PSYK1-80A 4PSYK1-100A 4PSYK1-125A 4PSYK1-160A 4PSYK1-250A 4PSYK1-400A 4PSYK1-630A 4PSYK1-800A 4PSYK1-1000A 4PSYK1-1250A 4PSYK1-1600A 4PSYK1-2000A 4PSYK1-2500A 4PSYK1-3200A 4P
Agreed thermal current Ith20A40A63A80A100A125A160A250A400A630A800A1000A1250A1600A2000A2500A3200A
Rated insulation voltage Ui750V750V
Rated impulse withstand voltage Uimp8KV12KV
Rated work voltage of the switch copper UeAC440V
Rated work current Ie20A40A63A80A100A125A160A250A400A630A800A1000A1250A1600A2000A2500A3200A
Rated connection capacity10Ie
Rated breaking capacity8Ie
Rated limit short-circuit current100KA70KA100KA120KA80KA
Rated current short-term tolerance IS7KA9KA13KA50KA50KA55KA
Transfer Time I-II or II-I≤3S≤0.6S≤1.3S≤1.3S≤2.4S
Control voltage of the switch motorStandard AC 220V    Optional AC 110V,280V,DC 24V
Cabinet modelBB3GCK2
Cabinet size500*250*600mm600*350*700mm1000*800*1900mm


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