Single Pole, Single Throw (SPST) Liquid Level Switches Datasheets

Conductivity liquid-level controls are designed for use in electrically conductive liquids. When the liquid contacts the tip of the probes they act as a switch closure and can be used for pump or solenoid control, high and low alarm contacts or heater protection.[See More]

• Construction: Solid-state switch 
• Pole & Throw: Single Pole, Single Throw (SPST) 

• Configuration: Normally Open (NO) 
• Maximum  Pressure: 250 psi

• Construction: Electro-mechanical switch 
• Pole & Throw: Single Pole, Single Throw (SPST) 

• Configuration: Normally Open (NO); Normally Closed (NC) 
• Maximum Current: 1.50 amps

• Construction: Electro-mechanical switch 
• Pole & Throw: Single Pole, Single Throw (SPST) 

• Configuration: Normally Open (NO) 
• Maximum Current: 0.5000 amps

• Construction: Solid-state switch 
• Pole & Throw: Single Pole, Single Throw (SPST) 

• Configuration: Normally Open (NO) (optional feature); Normally Closed (NC) (optional feature) 
• Maximum Current: 0.5000 amps

When the magnetic field of permanent magnet inside the float is moved into to the proximity of the reed switch inside the stationary stem, the reed switch "snaps" the contact together and closes the electrical circuit. When the magnetic field is moved away from the reed switch, the reed switch does...[See More]

• Construction: Electro-mechanical switch 
• Pole & Throw: Single Pole, Single Throw (SPST) 

• Configuration: Normally Open (NO) 
• Maximum Current: 0.5000 amps

Bottle type level switches are ideal for large or small tanks or where access to the inside is impractical or impossible. These units mount completely outside the tank, at the level actuation point. LS-159000 Series - Low Cost, Compact Aluminum Housing. Inline NPT Ports.[See More]

• Construction: Electro-mechanical switch 
• Pole & Throw: Single Pole, Single Throw (SPST) 

• Configuration: Normally Open (NO); Normally Closed (NC) 
• Maximum AC Voltage: 240 volts

The KOBOLD NAE and NNE level switches provide mercury-free switching for tank applications requiring high AC current capability. Both units are constructed of industrial quality polypropylene. The NNE may be purchased with an optional Hypalon® coating for superior chemical resistance. The NAE has...[See More]

• Construction: Electro-mechanical switch 
• Pole & Throw: Single Pole, Single Throw (SPST); Single Pole, Double Throw (SPDT) 

• Configuration: Normally Open (NO) 
• Maximum Current: 10.00 amps

The M8000 miniature liquid level switch has a polypropylene stem and a polypropylene float. Polypropylene is typically suitable for use with acidic liquids such as those found in electroplating and metal cleaning. It is also a great option for lower temperature food operations (up to 105 degrees C)...[See More]

• Construction: Electro-mechanical switch 
• Maximum  Pressure: 100 psi

• Pole & Throw: Single Pole, Single Throw (SPST) 
• Material Temperature: 221 F

FB-5000 is a highly compact and durable float switch which is installed at a tank side through a nozzle. Made out of 316 SS, it has high corrosion resistance capability and is designed for high pressure ratings coupled with ease of handling. Float follows liquid level and actuates a Reed switch...[See More]

• Construction: Electro-mechanical switch 
• Maximum Current: 0.5000 amps

• Pole & Throw: Single Pole, Single Throw (SPST) 
• Maximum AC Voltage: 125 volts

• Construction: Electro-mechanical switch 
• Pole & Throw: Single Pole, Single Throw (SPST) 

• Configuration: Normally Open (NO) 
• Maximum Current: 0.5000 amps

• Construction: Electro-mechanical switch 
• Maximum Current: 0.0030 amps

• Pole & Throw: Single Pole, Single Throw (SPST); Double Pole, Double Throw (DPDT) (optional feature) 
• Maximum AC Voltage: 110 volts

The Model FSI Float Switch Indicator displays the status of up to 5 float switches. When a float switch closes, the corresponding LED lights. When a float switch opens, the corresponding LED goes out.[See More]

• Construction: Electro-mechanical switch 
• Switch Points: 1.00 to 5.00 #

• Pole & Throw: Single Pole, Single Throw (SPST) 
• Technology: Electrical Conductivity or Resistance 

Float switches are used to trip high/low level alarms, engage relays, control or start/stop pumps, open/close valves etc. They are a simple, inexpensive way to provide independent or redundant setpoints for emergency shut-down or backup.[See More]

• Repeatability: 0.0300 +/-inch
• Configuration: Normally Open (NO); Normally Closed (NC) 

• Construction: Electro-mechanical switch 
• Pole & Throw: Single Pole, Single Throw (SPST); Single Pole, Double Throw (SPDT) (optional feature) 

Walchem’s polypropylene tank level switches work well in chemicals that are clean and non-coating or scaling. Polypropylene should be compatible with nearly all water treatment chemicals. The reed switch output provides a reliable input to our WebMaster series controllers. These level...[See More]

• Measuring Range: 0.0 to 36.00 inch
• Construction: Electro-mechanical switch 

• Repeatability: 0.0787 +/-inch
• Configuration: Normally Open (NO)