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4140 Pressure and Temperature Switches

SKU 4140

AMOT Model 4140 switches are available as a single (4140C & F), dual step pressure or temperature switch (4140D & E), or a combined pressure and temperature switch (4140A). Model 4140 temperature switches and combined switches are supplied with a thermal well or slip coupling and are mounted by inserting the temperature sensing element into a properly located pipe boss.

Note: 4140 Pressure and Temperature Switch replaces model numbers 8252, 8253, 8254, 8255, 8256 and 2340.

Features and Benefits

  • Gold and silver plated contacts - for use in I/S circuits
  • Weatherproof enclosure IP56
  • Single and dual set points - alarm and shutdown capabilities in one unit
  • Combined temperature and pressure with independent, fully adjustable set points - for use in diverse applications
Housing material: Diecast aluminum alloy casting
Fully gasketed and weatherproof
Pressure sensing wetted parts: Fitted with nitrile rubber diaphragm
Temp. sensing probe: Wax element enclosed in copper sheath or bi-metallic disc (range 6)
Vibration: Resistant up to 14G/100Hz Refer to microswitch type
Temperature: Temp. switch:
Pressure switch:
-40 to 120°C
-40 to 90°C
-40 to 248°F
-40 to 194°F
Types: Single
Combined pressure and temperature

Suitable for industrial and marine applications, providing protection and safety of:

  • Diesel engines

  • Compressors

  • Pumps

  • Transmissions

  • Gearboxes