Pressure Switches

Model 221
with SPDT Switch

Availability: In Stock

Items marked as "In Stock" are either ready for urgent delivery or can be made ready in less than 10 days.

Do you need to protect your refrigeration system from excessively low suction pressure or excessively high discharge pressure with economic prices?Switch-Mate 221 is the answer. They are reliable to start or stop your refrigeration compressors or fans on air-cooled systems. They are easy to set up followed with the instruction manual. InstruMate model 221 offers various application possibilities with non-corrosive media like oil, water and air.



  • Refrigeration and air conditioning systems
  • Stop or start of fans in air-cooled condensers
  • With control circuit of DC motors or large AC motors
  • Connect directly to a single-phase AC motor (Max. 2kw)
  • Non-corrosive media like oil, water and air

Special Features

  • Snap-action SPDT contacts
  • Compact design
  • Fully welded bellows
  • Promised switch accuracy ≤ 2%
  • Adjustable on site


Ambient Temperature: -40…+65 °C
Media Temperature Inside the Pressure Switch: -25…+65 °C
Rated Impulse Voltage: 4kV
Short Circuit Protection Fuse: 16A
Insulation: 400V
Connection: Free cutting steel, Nickel plated


Data sheets

Mechanical Pressure Switches model 221
  • EN

Instruction Manuals

Mechanical Pressure Switches model 221
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  • ar

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