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Manual Transfer Switch ATS LMGLZ 63A-3150A - China Suppliers & Factory Certified CE, CB, CCC

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Model Name: LMGLZ
Rated Voltage: AC400V
Rated Current: 63A~3150A
Pole: 3P, 4P
Product Category: Manual Changeover Switch
Certification: CE, CB, CCC
Standard: IEC 60947-3
Email: sale@lvma-ele.com

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Discover the excellence of the LMGLZ Manual Changeover Switch, expertly manufactured by our factory in China. Known for its robust performance, this switch operates at a rated voltage of AC400V and supports a wide current range from 63A to 3150A. With options for 3 poles and 4 poles, it is designed to meet diverse electrical needs. Our products are certified by CE, CB, and CCC, ensuring high quality and reliability. As leading suppliers in the industry, we adhere to the IEC 60947-3 standards to guarantee safety and performance. Contact us today for more information!

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    LMS1-LA Series Manual
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    Product Details

    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. ​

    In a power supply system, a manual transfer switch manually switches a load from one power supply to another, ensuring that the load remains powered in the event of a power failure or need for maintenance, ensuring the continuous operation of the equipment. It is commonly used in hospitals, banks and other places that require high reliability of power supply. Applies to AC 50Hz, rated voltage below 660V (690V), apply to rated voltage below 440V. Rated current is 63A–3150A.
    Model Description
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    Product Features
    1
    Simple and Reliable

    Simple Structure: Manual transfer switch adopts mechanical structure, intuitive operation, low failure rate.

    High Reliability: Without complex electronic components, manual switches can operate reliably in harsh environments.

    2
    Low Cost

    Lower Cost: Manual transfer switches are cheaper than automatic transfer switches (ATS) and are suitable for projects with limited budgets.

    Low Maintenance Cost: Simple structure, low maintenance and repair costs.

    3
    Flexible Operation

    Manual Control: Can fully control the power switching time, suitable for scenarios that need human intervention.

    Small-Scale Applications: Suitable for homes, small shops or places that do not require frequent power switching.

    4
    High Security

    Prevent Misoperation: Manual operation requires manual confirmation, avoiding misoperation that may occur with automatic switching.

    Electrical Isolation: Ensures that the main power supply and standby power supply will not be connected simultaneously to avoid short circuit or equipment damage.

    5
    Adaptability

    Variety of Power Sources: Can be used to switch between mains and generators, solar cells, UPS and other power sources.

    Environmental Adaptability: Able to work in high temperature, high humidity and other harsh environments.

    6
    Easy Installation

    Simple Installation: Manual transfer switch is usually small in size, simple to install, and does not require complex wiring or debugging.

    Small Footprint: Suitable for places with limited space.

    7
    No External Power Required

    Independent Operation: Manual transfer switch does not need external power supply or control signal, completely dependent on manual operation — suitable for unstable power environments.

    8
    Handover Without Delay

    Instant Power Switch: Manual operation can complete power switching immediately, without waiting for detection or delay.

    9
    Transparency

    Visible Operation: You can intuitively see the switch state to ensure that the switching process is clear and controllable.

    Main Technical Parameters
    Rated current (A) 63 100 125 160 200 225 250 315 400 500 630 800 1000 1250 1600 2000 2500 3150
    Rated insulation voltage 690V 800V 1000V
    Rated working voltage AC400V
    Rated frequency 50Hz
    Rated short-circuit connecting capacity 17 40 105
    Mechanical life 1700 1400 800 500 300
    Electric life 300 200 100
    Structure and Mounting Dimensions
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    Frequently Asked Questions (FAQ)
    Q
    What is a manual transfer switch and how does it work?
    A manual transfer switch (MTS) is a device that allows an operator to manually switch a load from one power source to another — for example, from the main utility supply to a backup generator. Unlike automatic transfer switches, the switching is performed by hand, giving the operator full control over the timing and process of the power changeover.
    Q
    What is the rated current range for this manual transfer switch?
    This manual transfer switch supports a rated current range of 63A to 3150A, making it suitable for a wide variety of applications — from small commercial installations to large industrial power systems.
    Q
    What voltage and frequency does this manual transfer switch support?
    The switch applies to AC 50Hz with a rated working voltage of AC 400V. The rated insulation voltage varies by current rating: 690V for lower current models, 800V for mid-range, and 1000V for higher current models. It is designed for use in systems with rated voltage below 660V (690V).
    Q
    Where is a manual transfer switch commonly used?
    Manual transfer switches are widely used in environments that demand high power supply reliability, such as hospitals, banks, data centers, commercial buildings, and industrial facilities. They are also suitable for homes, small shops, and any location requiring a reliable backup power solution without frequent automatic switching.
    Q
    What is the difference between a manual transfer switch and an automatic transfer switch (ATS)?
    A manual transfer switch requires a person to physically operate the switch to change the power source, offering more control and lower cost. An automatic transfer switch (ATS) detects power failure and switches sources automatically without human intervention. Manual switches are simpler, more affordable, and more reliable in harsh environments, while ATS provides faster and hands-free response to outages.
    Q
    How long is the mechanical and electrical service life of this manual transfer switch?
    The mechanical life of this manual transfer switch ranges from 300 to 1700 operations depending on the current rating — higher current models have a lower cycle count. The electrical life ranges from 100 to 300 operations. For example, the 63A model offers up to 1700 mechanical operations and 300 electrical operations, while the 3150A model provides 300 mechanical and 100 electrical operations.

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