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Mercury Tilt Switch

SKU: 11078

1) Operating Voltage: 3.3V to 5V
2) Diameter: 4mm
3) Length: 35mm
4) Output Format: digital switching outputs (0 and 1)

    ₹ 25.00 25.0 INR ₹ 25.00 (Incl. GST)

    ₹ 21.19

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    Mercury switches have one or more sets of electrical contacts in a sealed glass envelope that contains a small quantity of mercury. The envelope may also contain hydrogen at pressure, an inert gas, or a vacuum. Gravity constantly pulls the drop of mercury to the lowest point in the envelope. When the switch is tilted in the appropriate direction, the mercury touches a set of contacts, thus completing an electrical circuit. Tilting the switch in the opposite direction moves the mercury away from that set of contacts, breaking that circuit.


    • The contacts are enclosed, so oxidation of the contact points is impossible.

    • In hazardous locations, interrupting the circuit does not emit a spark that could ignite flammable gases.

    • Contacts stay clean, and even if an internal arc occurs, the contact surfaces renew on every operation, so they don’t wear out.

    • Even a small drop of mercury has low resistance, so switches can carry useful amounts of current in a small size.

    • The sensitivity of the drop to gravity provides a unique sensing function and lends itself to simple, low-force mechanisms for manual or automatic operation.

    • The switches are quiet, as no contacts abruptly snap together.

    • The mass of the moving mercury drop provides an over-center effect to avoid chattering as the switch tilts.

    Package Includes:

    • 1 x Mercury Tilt Switch

    Technical Specification
    Operating Voltage (VDC)
    3.3 ~ 5
    Output Format
    digital switching outputs (0 and 1)
    Diameter (mm)
    Length (mm)
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