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    3 Pole Double Throw Knife Switch with LED Indicator

    3 pole double throw switch with a transparent LED indicator, designed for cutting off or connecting the circuit through manual operation to realize the functions of power system division, equipment maintenance, emergency shutdown, debugging and backup. 32A, 63A, 100A or 225A knife switch for selection.
    SKU: ATO-HK11-3P
    30-day Returns
    Free Shipping
    Delivery date: 6-12 days

    Buy a low price 3 pole double throw knife switch online, with a resin base, transparent LED indicator and optional current 32A/63A/100A/160A/225A. Reliable manual changeover switch can effectively isolate the power supply when disconnecting the circuit.


    Model ATO-HK11
    Pole 3 Pole
    Mode Manual
    Current 32A 63A 100A 225A
    Voltage AC 380V AC 380V, DC 12V-600V AC 380V AC 380V
    Material The knife holder/blade/bottom are all made of copper.

    Dimensions (Unit: mm)

    3 pole double throw knife switch dimensions

    Wiring Diagram

    3 pole knife switch wiring

    Tips: What is a double throw knife switch?

    The double-throw knife switch is a type of electrical switch used to control the flow of electricity in a circuit. It consists of a metal lever, often shaped like a knife, that can be manually moved to make or break electrical connections. The "double throw" aspect refers to the switch's ability to control two separate circuits, providing a choice between two different paths for the electrical current.

    In a double-throw knife switch, there are typically three terminals: one common terminal and two other terminals corresponding to the two possible positions of the switch. When the switch is in one position, the common terminal is connected to one of the other terminals, completing one circuit. When the switch is flipped to the other position, the common terminal is connected to the second terminal, establishing a different circuit.

    These switches were commonly used in early electrical systems, and while they have been largely replaced by more modern switches in many applications, they are still employed in certain niche situations where their specific features are advantageous. The distinctive design of the switch, resembling a knife, contributes to its name.

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