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SJKQ1 ATS Automatic Transfer Switch - Reliable Power Solution from China Suppliers & Factory

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
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    Product Details

    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 at installation site: not exceeding 2000m.

    3. Relative humidity of the atmosphere: not exceeding 50% at an ambient temperature of +40°C, with higher humidity permissible at lower temperatures; the maximum average relative humidity is 90% when the monthly average minimum temperature of the wettest month is +25°C. Special measures shall be taken to address condensation on the product surface due to humidity fluctuations.

    4. Pollution degree: Level III.

    Operating environment: free from severe vibration and 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
    Operation Mode Auto & Manual Operation Auto / Manual / Off Mode
    Detection Function Phase-Loss Detection Undervoltage & Phase-Loss Detection (Main Source)
    Conversion Mode Auto-Recovery
    Fire Linkage Control None Fire Alarm Cutoff (DC 12-24V Input)
    Display Function Signal Indication
    Switch Dimensions & Installation

    Dimensions & Installation (Table 3 & Figure 1)

    SJKQ1-322-3-1
    Model & Size    Dimensions Overall Dimensions Installation Dimensions
    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 a wide range of applications from light-duty to medium industrial loads.
    Q What is the difference between the Terminal Type (M) and the Smart Type (Z) controller?
    The Terminal Type (M) offers basic Auto & Manual operation with phase-loss detection and signal indication. The Smart Type (Z) adds Auto/Manual/Off mode selection, undervoltage detection for the main source, and fire alarm cutoff capability via DC 12–24V input.
    Q What is the transfer time of the SJKQ1 ATS?
    The SJKQ1 ATS has a factory-preset transfer time of less than 3 seconds. This value is non-adjustable and ensures fast switching between power sources to minimize supply interruption.
    Q What are the installation environment requirements for the SJKQ1 ATS?
    The SJKQ1 ATS should be installed in environments with ambient temperatures between -5°C and +40°C, at altitudes not exceeding 2000m, with pollution degree Level III. It should be free from severe vibration, corrosive gases, excessive dust, conductive particles, explosive materials, and strong electromagnetic interference.
    Q What are the available pole configurations for the SJKQ1 ATS?
    The SJKQ1 ATS is available in both 3-Pole (3P) and 4-Pole (4P) configurations. The 4-pole version has overall dimensions of 220×132×120mm, while the 3-pole version measures 185×132×120mm.
    Q What are the short-circuit capacity ratings of the SJKQ1 ATS?
    The SJKQ1 ATS has a Rated Short-Circuit Making Capacity (Icm) of 7.5KA and a Rated Short-Circuit Breaking Capacity (Icu) of 5KA, providing reliable protection under fault conditions in compliance with standard GB/T14048.11.