4140 Pressure and Temperature Switches
The AMOT 4140 is a highly durable pressure and temperature switch designed to deliver accurate engine protection in demanding industrial and marine environments. This single or dual-function switch is available in multiple configurations—pressure-only, temperature-only, or combined—making it a flexible solution for compressors, pumps, gearboxes, and diesel engines.
With weatherproof IP56 housing and vibration resistance up to 14G/100Hz, the 4140 is ideal for vibration-heavy or outdoor installations. The unit is built with fully adjustable set points and supports both alarm and shutdown functions in a single device, reducing the need for separate instrumentation.
Key Features:
- Available as single, dual, or combined switch
- Independent pressure & temperature set points
- Temperature range: -40°C to +120°C
- Pressure: up to +90
- IP56-rated diecast aluminum enclosure
- Vibration-resistant design (14G at 100Hz)
- Gold and silver-plated contacts for reliable low-current switching
- Nitrile rubber diaphragm with copper/sheath or bi-metallic sensing options
- Supplied with thermal well or slip coupling for pipe mounting
Application Areas:
- Diesel engines and gensets
- Compressors and pumps
- Marine engines and gearboxes
- Industrial hydraulic systems
- Transmission monitoring
| Housing material: | Diecast aluminum alloy casting Fully gasketed and weatherproof |
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| 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 Dual Combined pressure and temperature |
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Suitable for industrial and marine applications, providing protection and safety of:
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Diesel engines
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Compressors
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Pumps
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Transmissions
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Gearboxes
