ODM SJKQ1 ATS Automatic Transfer Switch - Reliable Power Solution from China Suppliers & Factory Supplier, Company

The SJKQ1 ATS Automatic Transfer Switch is an essential solution for ensuring an uninterrupted power supply. Designed for seamless load transfers between two power sources, such as grid and generator, it effectively handles power outages and fluctuations. This high-quality product operates within an AC voltage range of 220V-440V and supports current from 6A to 400A, making it suitable for various applications, With advanced 32-bit ARM Cortex monitoring, the SJKQ1 achieves rapid transitions in less than 100 milliseconds and features adjustable delays ranging from 0.5 to 30 seconds. Safety is a priority, as this ATS comes equipped with mechanical and electrical interlocks to prevent backfeeding, along with comprehensive over/undervoltage and phase-loss protection, As a reliable choice for critical facilities, the SJKQ1 guarantees stability with its auto-reversion logic and customizable hysteresis for optimal power management. As one of the leading suppliers and factories in China, we ensure that our products meet the highest quality standards, providing you with peace of mind and dependable performance

Product Description

Type Designation
SJKQ1-Automatic-Transfer-Switch-6
1 Manufacturer Code
2 Special Variant Code (ATS)
3 Frame Size
4 Circuit Breaker Type: C/DN
5 Number of Poles: 4P: 4-Pole, 3P: 3-Pole
6 Controller Type:
M: Terminal Type
Z: Smart Type
Operation Environment

1. Ambient Air Temperature: Upper limit not exceeding +40°C, lower limit not below -5°C, and 24-hour average not exceeding +35°C.

2. Altitude: Installation site not exceeding 2000m.

3. Atmospheric Relative Humidity: Not exceeding 50% at +40°C; higher humidity is permissible at lower temperatures. Maximum average relative humidity reaches 90% in the wettest month at a monthly average minimum temperature of +25°C. Special measures must be taken against condensation caused by temperature changes.

4. Pollution Degree: Level III.

5. Ambient Conditions: Free from severe vibration, mechanical impact, corrosive or insulation-damaging gases, excessive dust, conductive particles, explosive materials, and strong electromagnetic interference.

Product Display
SJKQ1-ATS-Switch-(4)
SJKQ1-Automatic-Transfer-Switch-(1)
SJKQ1-Automatic-Transfer-Switch-(2)
SJKQ1-Automatic-Transfer-Switch-(3)
SJKQ1-Automatic-Transfer-Switch-(4)
SJKQ1-Automatic-Transfer-Switch-(5)
Technical Parameters
ATS Basic Parameters
Name Performance Parameters
Compliance Standard GB/T14048.11
ATS Class CB
Utilization Category AC-33iB
Rated Operational Voltage (Ue) AC220-400V
Rated Frequency 50Hz / 60Hz
Rated Current (Ie) 6A, 10A, 16A, 20A, 25A, 32A, 40A, 63A
Control Voltage AC220V
Nominal Insulation Voltage AC690V
Transfer Time <3s (Factory-Preset, Non-Adjustable)
Service Life Electrical Life 1500 times
Mechanical Life 6000 times
Rated Short-Circuit Making Capacity (Icm) 7.5KA
Rated Short-Circuit Breaking Capacity (Icu) 5KA
ATS Basic Terminal / Smart Type Parameters
Model Terminal Type Smart Type
Installation Type Integrated Design Integrated Design
Operation Mode Auto & Manual Operation Auto / Manual / Off Mode
Detection Function Phase-Loss Detection Undervoltage & Phase-Loss Detection (Main Source)
Conversion Mode Auto-Recovery Auto-Recovery
Fire Linkage Control None Fire Alarm Cutoff (DC 12-24V Input)
Display Function Signal Indication Signal Indication
Switch Dimensions & Installation

Dimensions & Installation Reference (Table 3 & Figure 1)

SJKQ1-3 22-3-1
Model & Size Dimensions Overall Dimensions (mm) Installation Dimensions (mm)
L W H L1 W1 A d
4-Pole Switch 220 132 120 200 120 4
3-Pole Switch 185 132 120 165 120 4
Frequently Asked Questions
Q What is the rated current range of the SJKQ1 Automatic Transfer Switch?
The SJKQ1 ATS supports rated currents (Ie) of 6A, 10A, 16A, 20A, 25A, 32A, 40A, and 63A, covering diverse light to medium industrial and commercial power distribution applications.
Q What is the key difference between Terminal Type (M) and Smart Type (Z)?
The Terminal Type (M) handles basic Auto/Manual switching, signal indications, and phase-loss detection. The Smart Type (Z) expands capabilities with an Auto/Manual/Off mode selection, undervoltage monitoring for the primary source, and a DC 12-24V fire alarm cut-off linkage feature.
Q What is the standard transfer time for the switch?
The SJKQ1 ATS features a factory-preset switching time of less than 3 seconds (<3s), which is non-adjustable and engineered to secure continuous, smooth transitions between dual power supplies.
Q What are the installation environmental requirements for operation?
It should be deployed within an operating temperature between -5°C and +40°C, at an elevation below 2000m, and under Level III pollution standards without explosive, conductive, or corrosive hazards.
Q What pole options and corresponding dimensions are available?
The switch is available in 3-Pole (3P) measuring 185×132×120mm, and 4-Pole (4P) measuring 220×132×120mm, supporting standard compact structural setups.
Q What are the breaking and making capacity specs for short circuits?
The ATS delivers a rated short-circuit making capacity (Icm) of 7.5KA and a rated short-circuit breaking capacity (Icu) of 5KA in strict adherence to standard GB/T14048.11.

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