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    20 hp 3 Phase Magnetic Motor Starter

    Buy a 2 or 3 phase magnetic starter online. It is a 20 hp magnetic motor starter with 15kW power, 220V or 380V voltage, 32A rated current, 63A frame current and 50/60Hz, widely used in various industrial applications.
    SKU: ATO-MS-20HP
    30-day Returns
    Free Shipping
    Delivery date: 6-12 days

    Quality 20 hp magnetic starter with 220V or 380V voltage, 15kW power, 32A rated current, 63A frame current, screw installation, 50/60Hz Hertz for controlling motors in industrial machines or equipment. 2 phase or 3 phase magnetic motor starter can ensure safe and efficient motor operation.


    • Model: ATO-QCX5
    • Power: 20 hp (15kW)
    • Applicable Voltage: 220V (2 Phase) or 380V (3 Phase)
    • Rated Current: 32A
    • Frame Current: 63A
    • Breaking Capacity: 15kA
    • Rated Frequency: 50/60Hz
    • Ambient Temperature: -5°C~+40°C
    • Installation Method: Screw Installation
    • Installation Category: II
    • Dimension: 235x135x145mm


    • 20 hp magnetic starter provides overload protection and phase failure protection to ensure that the motor can be powered off promptly under abnormal operating conditions to prevent damage and extend the life of the equipment. Equipped with overheating protection to effectively prevent the motor from overheating, which may cause equipment damage or accidents.
    • ATO magnetic motor starter has high elasticity, insulation and air tightness to ensure the safety and stability of circuit operation. It is equipped with a flame-retardant and waterproof shell material to ensure the stable operation of the device for a long time.
    • 2/3 phase magnetic starter is easy to install, has a self-reset button operation, and is simple and convenient to operate. Green start and red stop self-reset buttons are used to intuitively display the device status.


    Magnetic starter wiring


    Magnetic starter applications

    Tips: How does a magnetic motor starter work?

    A magnetic motor starter operates by controlling the electrical power supply to an electric motor. It consists of two main components: a contactor and an overload relay. When the motor is to be started, a start button is pressed, sending a signal to the magnetic motor starter. The contactor, an electromagnetic switch, is energized by a coil. As the coil receives power, it creates a magnetic field that attracts the contactor's movable armature, closing the contacts and allowing electrical current to flow from the power source to the motor.

    Simultaneously, the overload relay monitors the current drawn by the motor. If the current exceeds a predetermined threshold, indicating a potential overload or fault, the overload relay trips, opening the circuit and disconnecting power to the motor. This serves to protect the motor from overheating and potential damage.

    The combination of the contactor for motor power control and the overload relay for motor protection makes the magnetic motor starter a crucial component in ensuring the safe and efficient operation of electric motors in various industrial and commercial applications.

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