Catalogs > Industrial Controls Catalog > Condition Sensing Switches and Controls > Float
Float
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Standards Compliance and Certifications | |
Introduction | |
Technical Data | |
Ordering Information | |
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Ordering Accessories | |
Approximate Dimensions | |
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Description
Bulletin 840 Automatic Float Switches are heavy duty horsepower or control circuit rated devices which can be used to control and monitor liquid levels in a tank or sump. As the liquid level rises or falls in a sump or tank, at a preset level the switch can either start a motor to adjust the liquid level or activate a circuit to turn on a light or sound an alarm. Bulletin 840 Float Switches are designed for long life and heavy duty operation. They are offered in five different styles with many different float operator assemblies. These assemblies come in either floor or base mounted versions to meet a wide range of applications.
Applications
- Water Treatment Plants
- Plating Plants
- Controlling Irrigation Channels
- Almost any other tank or sump application to control or monitor liquid levels
Style A — Industrial Low Operating Force
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Style A
- Wall or floor mounting accessories
- 2-pole switch: 1 N.O. and 1 N.C., 2 N.O., or 2 N.C. contacts
- Converts from tank to sump operation
- Maximum switch operating force of 0.9 lbs
- Sensitive to liquid level changes of 2 in.
- Type 1, Type 4, and Type 7 & 9 enclosures
- Contact ratings: NEMA A600 and N300
- Switch temperature operating range from -22…+150 °F (-30…+66 °C)
Style B — Heavy Duty Industrial
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Style B
- Wall or floor mounting accessories
- 2-pole switch with N.O. contacts
- Converts from tank to sump operation
- Maximum switch operating force of 3.8 lbs
- Sensitive to liquid level changes of 5 in.
- Type 1, Type 4, and Type 7 & 9 enclosures
- Contact ratings: NEMA A600 and N300
- Switch temperature operating range from -22…+150 °F (-30…+66 °C)
Style C — Motor Rated Industrial
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Style C
- Wall or floor mounting accessories
- 3-pole switch with N.O. contacts
- Converts from tank to sump operation
- Maximum switch operating force of 3.8 lbs.
- Sensitive to liquid level changes of 5 in.
- Type 1, Type 4, and Type 7 & 9 enclosures
- Contact ratings: NEMA A600 and N300
- Switch temperature operating range from -22…+150 °F (-30…+66 °C)
Styles D & DS — Low Cost, Low Operating Force
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Style D and DS
- Wall or floor mounting accessories
- 2-pole switch with N.O. contacts
- Style D, tank operation only
- Style DS, sump operation only
- Maximum switch operating force of 0.6 lbs
- Sensitive to liquid level changes of 3 in.
- Type 1 enclosure only
- Contact ratings: NEMA A600 and N300
- Switch temperature operating range from -22…+150 °F (-30…+66 °C)