NKP Plastic Level Switch

Brand: KOBOLD Instruments, Inc.

The plastic level switch NKP is designed for economical control of liquids in vessels. Many industrial applications can be realized with two different plastic versions each with three different mountings.

The switch is remarkable for its maintenance-free design, small dimensions and reed contacts with high switch capacity.

The switch is mounted on the side of the vessel. A hinged plastic float with a magnet floats up and down through the liquid level. The encapsulated reed contact is operated by the magnet.

The switching function (N/O contact / N/C contact) is determined by the installation position. The switching function is reversed by simply rotating the switch through 180°.



  • Car Washes
  • Cleaning Machines
  • Plastic Tanks

Approvals & Certifications

  • cCSAus
  • CSA

BSP Connection

  • G 1/2"

Cable Length

  • 10 feet (3 metres)

Cable Material

  • Polyurethane (PUR)
  • PVC
  • Silicone Sheathed Cable

Electrical Connectors

  • AWG 20, 2-Core Cable
  • M16

Electrical Contacts

  • Normally Closed
  • Normally Open
  • Reed Contact

Electrical Rating

  • Maximum

Enclosure / Body Material

  • Aluminum
  • PVDF

Environmental Protection

  • IP65

Materials of Construction

  • Polypropylene - Float
  • PVDF - Float

Maximum System Pressure

  • psi: 145 (bar: 10, kPa: 1,000)

Mounting Position

  • Horizontal ± 30°

NPT Connection

  • 1/2"-14 Male NPT

Nut & Bolt Material

  • Polypropylene


  • 400 Vdc/1 seconds - Minimum Electric Strength


  • Maximum

Seat / Seal Material

  • EPDM
  • FPM
  • NBR

Switch Type

  • Normally Open or Normally Closed

Temperature Range

  • Maximum

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