LT-Series NEMA 4 Watertight Multifunction Temperature Switch
The Ashcroft® LT NEMA 4 temperature switch is engineered for use in virtually all OEM and industrial applications. The simple design allows for easy wiring and field installation, while its proven technology delivers repeatable, long-term performance. With temperature ranges from -40°F to 750°F this switch is ideal for temperature control, shutdown or alarm operations.
Key Features:
- Choice of temperature ranges (from -40° to 750°F)
- Direct or remote reading thermal systems
- Wide selection of switch elements
- Adjustable setpoints from 15%-100% of range
- Fixed or adjustable deadbands
- Single or Dual adjustable set points
- UL, CSA and CE approved
Applications:
Process Market:
- Refineries
- Chemical and Petrochemical Plants
- Pulp and Paper Mills
- Power Plants
- Steel Mills
- Water and Sewage Treatment Facilities
Industrial Market:
- Pumps, Compressors and Turbines
- Dairies and Breweries
- Boilers and Burners
- Reverse Osmosis Systems / Filters
- Filters and Presses
- Paint spraying Equipment
- Specialized OEM Equipment
Product Information
Specifications
- Setpoint Repeatability (Accuracy)
- ±1% of span (Additional setpoint shift of ±1% of range per 50°F from initial setpoint set at 70°F typical)
- Setpoint
- Dual setpoint, fixed deadband
- (Setpoints - factory set or field adjustable)
- Single setpoint, adjustable deadband
- Single setpoint, fixed deadband
- Deadband
- Fixed or adjustable
- Enclosure Ratings
- NEMA 4X / IP66
- Pressure Ranges
- -40°F to 60°F through 500°F to 750°F
- Enclosure Material
- Epoxy coated aluminum
- Pressure Connection
- Direct Mount: ½ NPT Male
- Remote Mount: ½ NPT Male Bushing (XBX) (OPT.)
- Electrical Termination
- 3/4 NPT Female conduit connection
- ½ NPT Female, M20 X 1.5 (OPT.)
- Direct Mount
- Stem lengths from 2¾˝ to 24˝
- Remote Mount
- Capillary lengths from 5´ to 25´ (5 ft. increments) Consult Factory for longer lengths
- Wetted Material
- Direct Mount: 316 Stainless steel
- Remote Mount: Bulb capillary: 316 Stainless steel
- Spiral armor: 302 Stainless steel
Certifications & Approvals

CE

CSA

RoHS

UL
Data Sheets:
Instruction Manuals:
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Resources & Tools
Materials Selector
Use the selector to review compatible wetted materials and requirements of your application.
Unit Converter
Need to convert measurement units? Check out our quick and easy tool to convert pressure, temperature and flow units of measure.
Product Information
To learn more about the technical details for options available, review our product information (PI) pages.
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