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Ashcroft
Ashcroft LT-Series Watertight Temperature Switch
Quote on request
No online payment · add lines to RFQ BOM
LT: −40–750 °F; ±1% span; NEMA 4X alum; direct/remote. RFQ range.
Download datasheet PDF
RFQ cart holds BOM lines only. Submit for engineering quote.
Key parameters
Process connection
Direct: 1/2 NPT Male; Remote optional XBX 1/2 NPT Male bushing
Wetted parts
Direct stem 316 SS; remote bulb/capillary 316 SS; spiral armor 302 SS
Approvals
UL; CSA; CE/UKCA; RoHS
Set Repeatability
±1% of span
Temperature Range
-40 °F to 750 °F (range options from -40/60 °F through 500/750 °F)
Switch Type
SPDT or 2 SPDT independent / DPDT optional (-XC2)
Fits OEM and industrial temperature control where you need an Ashcroft LT (L-Series) temperature switch—ranges from about −40 °F to 750 °F, ±1% of span repeatability, and an epoxy-coated aluminum NEMA 4X / IP66 enclosure with direct or remote bulbs.
Key advantages
- Ranges — About −40 °F to 750 °F
- Repeatability — ±1% of span
- Enclosure — Epoxy-coated aluminum NEMA 4X / IP66
- Functions — LTS / LTA / LTD setpoint styles
- Mount — Direct stem or remote capillary 5–25 ft
Typical applications
- OEM machine temperature trips.
- HVAC / process high-temp alarms.
- Pump / compressor thermal interlocks.
Selection guide
- LTS vs LTA vs LTD
- Direct vs remote
- Switch element rating
Common mistakes
- Stainless GT needed but LT aluminum ordered.
- Capillary length mismatch.
- Deadband type wrong for control loop.
When to RFQ / what to tell us
- Function, range, mount.
- Quantity, ship-to.
Request a Quote · Get selection help
Specs
| Spec | Value |
|---|---|
| SKU | 37200 |
| Brand | Ashcroft |
| Model | L Series / LT |
| Product type | Temperature Switch |
| Type | Watertight temperature switch (Ashcroft LT / L-Series) |
| Ranges | About −40 °F to 750 °F class |
| Repeatability | ±1% of span |
| Enclosure | Epoxy-coated aluminum NEMA 4X / IP66 |
| Setpoint | LTS/LTA/LTD — fixed or adjustable deadband; single or dual |
| Mount | Direct stem or remote capillary 5–25 ft |
| Electrical | ¾ NPT female conduit |
Documents
FAQ
Q: Enclosure? A: Epoxy-coated aluminum NEMA 4X / IP66.
Q: Repeatability? A: ±1% of span.
Q: What should I send for a quote? A: Function/range/mount, quantity, ship-to.
Links
| Parameter | Value |
|---|---|
| Process connection | Direct: 1/2 NPT Male; Remote optional XBX 1/2 NPT Male bushing |
| Wetted parts | Direct stem 316 SS; remote bulb/capillary 316 SS; spiral armor 302 SS |
| Approvals | UL; CSA; CE/UKCA; RoHS |
| Set Repeatability | ±1% of span |
| Temperature Range | -40 °F to 750 °F (range options from -40/60 °F through 500/750 °F) |
| Switch Type | SPDT or 2 SPDT independent / DPDT optional (-XC2) |
| Setpoint | Single or dual adjustable; fixed or adjustable deadband (LTS/LTA/LTD) |
| Enclosure Rating | NEMA 4X / IP66 |
| Enclosure Material | Epoxy-coated aluminum (L-Series) |
| Electrical Termination | 3/4 NPT Female conduit (1/2 NPT / M20 optional) |
| Stem Lengths | Direct mount 2-3/4 in to 12 in (to 24 in on product page) |
| Capillary Lengths | Remote 5 ft to 25 ft in 5 ft increments |
| Setpoint Adjustability | 0–100% of range (product page notes 15%–100% typical) |
| Typical Uses | Refineries, chemical/petrochem, pulp/paper, power, boilers/burners, OEM equipment |