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China W2 W3 Automatic Transfer Switch Digital Controller - Reliable ATS Solutions from Top Suppliers & Factory

The W2, W3 Dual Power Controller is an advanced intelligent device designed for automatic switching systems (ATS) that manage dual power sources efficiently. This essential equipment is engineered to monitor and control the operational status of both a primary power supply and a backup power source. In the event of a power failure, the controller seamlessly facilitates an automatic switch-over to ensure uninterrupted power supply to your essential loads, Manufactured in China, our W2, W3 Dual Power Controller is compatible with various dual power supply types, including C-type, Y-type, and W-type. It provides real-time monitoring of crucial parameters such as three-phase voltage, three-phase current, frequency, and power levels, all showcased through a user-friendly liquid crystal display, As a reputable factory and leading suppliers in the industry, we prioritize quality and reliability in our products, ensuring that you receive the best solutions to meet your power management needs. Experience the benefits of our innovative dual power control technology and maintain continuous power supply with confidence
    LMS1-LA Series Manual

    LMS1-LA as our ingenuity research and development of a new generation of dual power automatic transfer switch, in the performance and technology to achieve a major breakthrough. The product provides 63A, 125A, 250A, 400A, 630A and other rated current specifications, whether it is the continuous operation of massive servers in data centers, or the uninterrupted power supply of life support equipment in hospital ICU wards, the stable operation of elevator and fire fighting system in high-rise buildings can fully meet the power demand in different scenarios. ​

    Its switching speed can be called industry-leading, switching time only 10ms-50ms, with millisecond response speed to complete power conversion. In the data center, the LMS1-LA automatic transfer switch can switch to the standby power supply in a very short period of time in the face of sudden power failure, avoiding data loss and system collapse caused by momentary power failure; in the hospital environment, the LMS1-LA automatic transfer switch can switch to the standby power supply in a very short period of time, millisecond-level power switching can guarantee the stable operation of precision instruments and first-aid equipment in operating rooms, and escort the safety of patients. When applied to high-rise buildings, fast power changeover ensures smooth parking of elevators, normal operation of fire fighting systems and improved building Factor of safety. ​
    The transfer switch is composed of a high performance excitation contactor and an intelligent controller. When working, the electromagnetic coil produces a strong and stable attraction to drive the switching action to ensure the instant completion of power switching. This feature not only effectively guarantees the rapid switching of the power supply when the equipment is powered off, but also realizes the seamless connection of the power supply, which provides a reliable and solid power guarantee for the equipment with strict requirements for power continuity. ​

    Main Functions
    🔄 1. Automatic Switching

    Main & standby switching: When the main power fails, automatically switches to the standby power supply to ensure uninterrupted power.

    Restore main power: After the main power is restored, automatically switches back and disconnects the standby supply.

    🖐️ 2. Manual Switching

    Manual operation: Supports manual power switching for easy maintenance and testing.

    📡 3. Condition Monitoring

    Real-time monitoring: Continuously monitors main and standby power supply voltage, frequency, and other parameters.

    Fault alarm: Issues sound and light alarms when power supply is abnormal, prompting timely action.

    🛡️ 4. Protective Functions

    Over/under-voltage protection: Automatically switches or disconnects when supply voltage is abnormal.

    Overload protection: Automatically disconnects when load is too large to prevent equipment damage.

    Short circuit protection: Automatically cuts off power during a short circuit to protect equipment and lines.

    5. High Reliability

    Stable operation: Uses high-quality components for long-term stable performance.

    Anti-interference: Excellent electromagnetic interference resistance, suitable for complex environments.

    🎛️ 6. Multiple Control Modes

    Auto/manual mode: Select automatic or manual control according to requirements.

    Remote control: Some models support remote monitoring and operation.

    🔧 7. Easy Installation

    Modular design: Easy to install and maintain.

    Versatile mounting: Supports wall-hanging, cabinet, and other installation methods.

    🏭 8. Widespread Application

    Suitable for hospitals, data centers, factories, and any location requiring uninterrupted power supply.

    🌱 9. Energy Saving & Eco-Friendly

    High efficiency: Optimizes power management to reduce energy consumption.

    Eco materials: Uses environmentally friendly materials that comply with environmental standards.

    📶 10. Communication

    Communication interface: Supports RS485, Modbus, and other protocols for easy integration into intelligent monitoring systems.

    Operating Functions
    W2、W3 Automatic Transfer Switch Plug-In Led Digita03
    ①   Auto / Manual button
    ②   Input main power button
    ③   Main power AN / BN / CN three-phase voltage
    ④   Automatic LED
    ⑤   Break button
    ⑥   Manual LED
    ⑦   Emergency AN / BN / CN three-phase voltage
    ⑧   Main power ON indication
    ⑨   Emergency ON indication
    ⑩   Main and Emergency voltage and frequency real-time LED display
    ⑪   Input emergency button
    automatic-transfer-switch-7-3
    ①   Main ON indication
    ②   Auto / Manual button
    ③   Main power ON button
    ④   LCD display area
    ⑤   OFF button
    ⑥   Emergency ON button
    ⑦   Emergency ON indication
    ⑧   LED button
    Type and Size of Connection
    W2、W3-Automatic-Transfer-Switch-Plug-In-Led-Digita02
    W2、W3-Automatic-Transfer-Switch-Plug-In-Led-Digita05
    W2、W3-Automatic-Transfer-Switch-Plug-In-Led-Digita04
    W2、W3-Automatic-Transfer-Switch-Plug-In-Led-Digita01
    Frequently Asked Questions (FAQ)
    Q What is an Automatic Transfer Switch (ATS) and how does it work?
    An Automatic Transfer Switch (ATS) is a device that automatically transfers the power supply from the main source to a standby source when the main power fails. It continuously monitors the main power voltage and frequency, and upon detecting an abnormality, seamlessly switches to the backup supply — ensuring uninterrupted power to critical equipment.
    Q Does the ATS support both automatic and manual switching modes?
    Yes. The ATS supports both automatic and manual switching modes. In automatic mode, the device handles power transfer without any human intervention. In manual mode, operators can manually initiate the switching process, which is especially useful during routine maintenance or testing procedures.
    Q What protective functions does the ATS provide?
    The ATS is equipped with multiple protection mechanisms, including over-voltage and under-voltage protection, overload protection, and short circuit protection. These features automatically disconnect the power supply under abnormal conditions to safeguard connected equipment and wiring from damage.
    Q What communication protocols does the ATS support for system integration?
    The ATS supports RS485, Modbus, and other standard communication protocols. This allows it to be easily integrated into intelligent building management systems or remote monitoring platforms, enabling centralized control and real-time data acquisition.
    Q Where is the Automatic Transfer Switch typically used?
    The ATS is widely used in environments where continuous power supply is critical, including hospitals, data centers, industrial factories, commercial buildings, and telecommunications facilities. Any application that cannot tolerate power interruptions benefits from deploying an ATS.
    Q How is the ATS installed, and what installation methods are supported?
    The ATS features a modular design that simplifies both installation and maintenance. It supports multiple installation methods including wall-mounting and cabinet-mounting, making it adaptable to various installation environments and electrical panel configurations.

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