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    Under Voltage Protector, 50A/63A, 220V, 2/4 Pole

    Get an over and under voltage protection device at low price. It comes with 50A/63A rated current, 220V rated voltage, lower incoming line mod, rail installation,and optional 2 pole or 4 pole. Reliable under voltage protector with a flame retardant material shell, can be installed in a standard distribution box.
    SKU: ATO-OVP-63A
    30-day Returns
    Delivery date: 6-12 days

    The 50A/63A over voltage protector is used to protect circuits or electrical equipment from damage caused by excessively high or low voltage. 220V rated voltage, lower incoming line mode, 2 pole or 4 pole auto recovery voltage protective device for selection.


    • Model: ATO-GPV8-63
    • Rated Voltage: 220V
    • Rated Current: 50A/63A
    • Incoming Line Mode: Lower Incoming Line
    • Pole: 2 Pole/4 Pole
    • Voltage Detection Error: ≤1%
    • Output Voltage: Over / Under Voltage (1s) Phase, Failure/ Phase Sequence (1s)
    • Delay Error: ±10%
    • Electrical Life: 100000 times
    • Mechanical Life: 1 Million times
    • Ambient Temperature: -20°C~55°C
    • Maximum Wire Area: 25m2

    Dimensions (Unit: mm)

    Overvoltage protector dimensions


    Over voltage protection device details

    Wiring Diagram

    over and under voltage protector wiring diagram

    Note: This overvoltage protector has no isolation function. Please disconnect the superior circuit breaker during maintenance.

    Tips: Under Voltage Protector vs. Surge Protective Device

    An under voltage protector and a surge protective device (SPD) are two distinct types of protection devices for electrical equipment.

    An under voltage protector is designed to monitor the voltage level supplied to equipment and take action when the voltage drops below a predetermined lower limit. Its purpose is to prevent damage or malfunction caused by insufficient voltage. It may trigger alarms, activate backup power sources, or disconnect the equipment to ensure safe operation within the specified voltage range.

    On the other hand, a surge protective device is specifically designed to protect equipment from voltage surges or transients. It diverts or limits high-voltage surges, such as those caused by lightning strikes or power disturbances, to prevent them from reaching and damaging the connected equipment. SPDs provide a pathway for excess energy to be safely grounded, safeguarding equipment from potential damage.

    While both devices relate to voltage protection, they address different issues. An under voltage protector focuses on preventing damage from low voltage, while an SPD protects against transient voltage surges. Selecting the appropriate device depends on the specific requirements and risks faced by the electrical system and the equipment it supports.

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