630A 4P Dual Power Automatic Transfer Switch
The 630A 4P dual power automatic transfer switch is designed for power source changeover between a normal supply and a standby supply, including generator backup systems. As a PC isolation type ATS, the YSQ3-630/4P helps distribution panels switch power paths safely, quickly, and visibly during utility power failure or recovery.
With 220V control voltage, 440V rated voltage, 50Hz frequency, and a 630A rated current, this automatic generator changeover switch is suitable for industrial distribution equipment, commercial electrical rooms, generator control panels, and facilities that need reliable main and backup power transfer.
Specification
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Type
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PC
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Place of Origin
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China
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Zhejiang
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Brand Name
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SANYUE
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Model Number
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YSQ3-630/4P
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Frame current
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630
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Product name
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Automatic Transfer Switch
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Pole
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4P
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Rated current
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630A
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Rated voltage
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440V
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Rated Frequency
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50HZ
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Control voltage
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220V
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Customized support
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OEM/ODM
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1. Conform to the standard: GB/T14048.11 / IEC60947-6
2. Conversion mode: Municipal electricity to municipal electricity, municipal electricity to generator
3. Function type: Automatic transfer and automatic recovery (If require automatic transfer without automatic transfer back, please specify)
4. Wiring method: Front-mounted wiring
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Enterprise
Code
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Product
Code
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Shell
Current
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Pole
Number
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YS
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Q3
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100
160
250
400
630
1000
1250
1600
2000
2500
3200
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2P
3P
4P
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With "F" indicates the fire type,that is the three-stage type:main power supply - double division - backup power supplyNo "F" indicates the two-stage type, that is the main power supply - backup power supply (Note: except 100A, the others are
two-stage and three-stage general purpose) |
"E" indicates 2 input and 1 output.The active and standby power supplies on the load side are connected together for easy
installation |
"Z" means intelligent, split controller: Y701 controller - over voltage, under voltage, phase loss, start generator and other
functions; Y702 controller - over voltage, under voltage,phase loss, start generator,485 communication and other functions. |
1.Electrical key lock: Controls the power supply of the internal control circuit of the switch. When the electrical lock is on,
the switch can achieve automatic, remote control, and forced "0" operation. When the electrical lock is off, the switch can only be operated manually.
2.Operating handle: When operating manually with the operating handle, the electric lock must be closed first.
3.Institutional padlock: For maintenance purposes only. First, use the operating handle to set the switch to the "0" position,
then pick up the padlock mechanism and apply the padlock before conducting maintenance. (When the padlock is picked up, the internal control power of the switch is cut off, and the switch cannot operate automatically or manually.)
4.Indicator: Indicates the working status position (Ⅰ, 0, Ⅱ) of the switch.
(1) Switch Function
1.Fully automatic function: when the main power is cut off, the switch automatically converts to the standby power; when the main power is restored to normal, the switch automatically returns and converts back to the main power.
2.Force "0" function: Press the force "0" button and the switch will cut off the dual power supply.
3.Remote control function: That is for long-distance control. Press the "Ⅰ" gear button, the main power works; press the "Ⅱ" gear button, the standby power works; press the "0" gear button, both power circuits are cut off.
4.Please select the switch function as needed and connect the wires according to the corresponding function.
5.When placing an order, please specify the switch model, current specification and required functions.Letter and Symbol Explanations
1) C1 and N1 are respectively the fire line and neutral line of the common power supply, C2 and N2 are respectively the fire line and neutral line of the standby power supply. HL1 and HL2 are respectively the power indication of the common power supply and the standby power supply. HD1, HD2 and HD3 are respectively the indication of the input of the common power supply, the standby power supply and the fire protection (double division). FU1 and FU2 are 2A fuses.
2) Terminals 101-106 and 201-206 are for automatic conversion of secondary wiring.
3) Terminals 301 - 306 are for the external indicator lights of the automatic transfer switch.
4) In the fully automatic wiring mode, 201 and 206 must be short-circuited wiring.
5) Forced "0" contact (passive) also can input DC24V power.
6) K1 is the output of the power generation signal (when the main power is exhausted).
7) SA is the switch for choosing automatic/manual functions. SB1 and SB2 are respectively the manual input buttons for the main power supply and the standby power supply (passive contacts).
Product Features
Dual Power Automatic Changeover
The ATS detects the status of the normal and standby power supplies and performs automatic transfer when the main supply fails. When the main supply returns to normal, the switch can automatically transfer back according to the selected operating mode.
PC Isolation Type Switch Structure
The PC isolation structure provides visible switching status for safer operation and maintenance. It is suitable for low-voltage distribution systems where electrical isolation and clear position indication are important.
Automatic, Remote, and Manual Operation
The switch supports automatic operation, remote electric control, forced 0 operation, and emergency manual operation. This helps users manage different power transfer scenarios in distribution cabinets and generator backup systems.
4-Pole Design for Distribution Panels
The YSQ3-630/4P model uses a 4-pole design, making it suitable for electrical systems that require switching of multiple conductors in main and standby power circuits.
Integrated Logic Control
The built-in logic control circuit manages motor operation and switching commands without requiring a separate external controller, helping simplify ATS panel design and installation.
Applications
Generator Backup Power Systems
This 630A automatic transfer switch can be used in generator backup panels to transfer loads between utility power and generator power during outage and recovery conditions.
Industrial Power Distribution
The switch is suitable for factories, workshops, production lines, and industrial distribution cabinets where stable main and standby power switching is required.
Commercial Building Electrical Rooms
Commercial facilities can use the ATS for lighting, emergency loads, mechanical systems, and other distribution circuits that require reliable source changeover.
Electrical Control Panels
Panel builders can integrate the YSQ3-630/4P ATS into low-voltage switchgear, generator control cabinets, and power distribution assemblies.
Why Choose SANYUE
- Manufacturing supply for automatic transfer switches and low-voltage electrical components.
- OEM and ODM support for distributors, electrical panel builders, and project contractors.
- Model confirmation support for current rating, pole number, control voltage, wiring mode, and ATS function.
- Product options for two-stage and three-stage transfer requirements depending on project needs.
- Export-ready supply support for electrical equipment buyers and international sourcing teams.
FAQ
What is the YSQ3-630/4P automatic transfer switch used for?
It is used to transfer electrical loads between a normal power supply and a standby power supply, such as utility and generator power, in low-voltage distribution systems.
What does 630A mean on this ATS?
630A refers to the rated current of this automatic transfer switch. Users should confirm the load current, system voltage, wiring method, and short-circuit protection design before selection.
Is this switch suitable for generator changeover?
Yes. The switch supports municipal-to-generator transfer applications and can be used in generator backup power panels when the selected wiring and control functions match the project design.
What should buyers confirm before ordering?
Confirm the rated current, pole number, control voltage, rated voltage, frequency, wiring method, two-stage or three-stage function, controller requirement, and installation space before purchasing.
Can the ATS be operated manually?
Yes. In addition to automatic and remote electric control, the switch supports emergency manual operation through the operating handle when the system is configured correctly.
Does SANYUE support OEM or ODM orders?
Yes. SANYUE can support OEM and ODM automatic transfer switch supply, including model matching, project sourcing, private label requirements, packaging support, and batch purchasing for distributors and panel builders.
OEM & ODM Support
SANYUE provides OEM and ODM support for automatic transfer switches and low-voltage electrical switching products. Buyers can provide the target current rating, pole number, control voltage, system voltage, wiring mode, controller function, packaging requirement, and estimated order quantity. The team can help distributors, switchgear builders, generator panel suppliers, and electrical project contractors select suitable ATS products for stable power transfer applications.
