Mercury switches consist of a mercury-filled tube with electrodes at each end. When the tube is tilted, the mercury flows to either end. This process cuts off the circuit on one end and opens it on the other. Mercury switches often function as on/off switches. There are many different types of mercury switches. Examples include mercury tilt switches and a mercury float switch. Mercury tilt switches are small tubes with electrical contacts at one end of the tube. When the tube tilts, the mercury collects at the lower end and creates a conductive path to complete the circuit. When the switch is tilted back, the circuit is broken. A mercury float switch is used in sump pumps and bilge pumps to turn equipment off when water reaches a certain level. A mercury float switch can automatically control the flow of electricity in electrically-driven pumps. A mercury float switch keeps the circuit closed until the float reaches a certain height. When the mercury slides down, it opens the circuit and shuts off the pump. When mercury switches are used on doors to open and close the doors they can be referred to as mercury door switch. An automotive mercury switch is used in cars to turn on the light when the door is opened. Other mercury switches are also commonly available.

There are several ways in which mercury switches function. Mercury switches can be used to detect all sorts of motion. When mercury in the switch is tilted, it is affected by gravity, and will flow to the lowest point in the glass bulb. The orientation of the switch causes the mercury to flow, opening or closing the contacts. Some specifications associated with mercury tilt switches are the maximum current they allow to flow, contact resistance, ohm life, and the contact mercury. A mercury float switch is round or cylindrical in shape. A mercury float switch ensures the highest level of reliability and provides a freedom of movement in equipments without sticking or corrosion. All float switch installations should be GFCI-protected and should only be installed on thermally protected equipment. Mercury float switches can have 10' SJOW-A class underwater-rated cable with a piggyback plug to enable devices to conveniently be plugged into it at the power receptacle. A mercury box switch allows two or more mercury switches to be placed in one switch box to control two or more equipments. A mercury box switch can have a CDI switch box and ignition coil attached to a mounting plate for easy installation. Mercury switches are designed and manufactured to meet most industry specifications.

Mercury switches consist of a mercury-filled tube with electrodes at each end. When the tube is tilted, the mercury flows to either end. This process cuts off the circuit on one end and opens it on the other. Mercury switches often function as on/off switches. There are many different types of mercury switches. Examples include mercury tilt switches and a mercury float switch. Mercury tilt switches are small tubes with electrical contacts at one end of the tube. When the tube tilts, the mercury collects at the lower end and creates a conductive path to complete the circuit. When the switch is tilted back, the circuit is broken. A mercury float switch is used in sump pumps and bilge pumps to turn equipment off when water reaches a certain level. A mercury float switch can automatically control the flow of electricity in electrically-driven pumps. A mercury float switch keeps the circuit closed until the float reaches a certain height. When the mercury slides down, it opens the circuit and shuts off the pump. When mercury switches are used on doors to open and close the doors they can be referred to as mercury door switch. An automotive mercury switch is used in cars to turn on the light when the door is opened. Other mercury switches are also commonly available.

There are several ways in which mercury switches function. Mercury switches can be used to detect all sorts of motion. When mercury in the switch is tilted, it is affected by gravity, and will flow to the lowest point in the glass bulb. The orientation of the switch causes the mercury to flow, opening or closing the contacts. Some specifications associated with mercury tilt switches are the maximum current they allow to flow, contact resistance, ohm life, and the contact mercury. A mercury float switch is round or cylindrical in shape. A mercury float switch ensures the highest level of reliability and provides a freedom of movement in equipments without sticking or corrosion. All float switch installations should be GFCI-protected and should only be installed on thermally protected equipment. Mercury float switches can have 10' SJOW-A class underwater-rated cable with a piggyback plug to enable devices to conveniently be plugged into it at the power receptacle. A mercury box switch allows two or more mercury switches to be placed in one switch box to control two or more equipments. A mercury box switch can have a CDI switch box and ignition coil attached to a mounting plate for easy installation. Mercury switches are designed and manufactured to meet most industry specifications.

Mercury switches are used in many applications. Examples include their use in automobiles, pumps, lab equipment, high voltage industrial equipment, and motors. A mercury tilt switch is usually present when no switch is visible. They are used in thermostats, silent light switches, clothes washer lids, and chest freezers. A mercury float switch is visible. A mercury float switch can be used to automatically operate pumps or alarms. A mercury float switch is usually present and visible in a septic tank. Mercury float switches are used at larger factories and sewage plants to maintain a given level of liquid. An automotive mercury switch is used in cars and other vehicles to turn on the hood, trunk, or door lights when they are opened. An automotive mercury switch can also be used to operate anti-lock brake systems (ABS). Mercury switches should adhere to standards such as NEMA-1, UL, FM, and CSA.