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Dwyer Instruments
Dwyer TSW Temperature Switch
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Dwyer TSW: PTC −50…150 °C; NTC −50…110 °C; relay output. RFQ sensor.
Download datasheet PDF
RFQ cart holds BOM lines only. Submit for engineering quote.
Key parameters
Measuring range
PTC probe −58 to 302 °F (−50 to 150 °C); NTC −58 to 230 °F (−50 to 110 °C)
Accuracy
±1% FS
Output
R1 SPDT 20 A @ 240 VAC; R2 SPDT 8 A @ 240 VAC (dual-stage); inductive 3 A
Ambient temperature
32 to 104 °F (0 to 40 °C)
Display
3-digit LED plus sign; single-stage 1° resolution; dual-stage 0.1° below 100
Approvals
CE; cURus
Fits simple temperature switching where you need a Dwyer TSW—temperature switch covering PTC ranges −50 to 150 °C or NTC −50 to 110 °C with relay switch output for equipment protection and HVAC trip points.
Key advantages
- PTC range — −50 to 150 °C
- NTC range — −50 to 110 °C
- Output — Relay switch
- Platform — Dwyer TSW temperature switch
- Use — Temperature trip / control
Typical applications
- Equipment overtemp trips.
- HVAC temperature switching.
- Simple process temp alarms.
Selection guide
- PTC vs NTC
- Setpoint / differential
- Probe length
Common mistakes
- Wrong sensor type.
- Ignoring ambient vs process.
- Relay load overrating.
When to RFQ / what to tell us
- Sensor type, setpoint.
- Quantity, ship-to.
Request a Quote · Get selection help
Specs
| Spec | Value |
|---|---|
| SKU | 40987 |
| Brand | Dwyer Instruments |
| Model | TSW |
| Product type | Temperature Switch |
| Range | PTC −50 to 150 °C; NTC −50 to 110 °C |
| Output | Relay switch output |
Documents
FAQ
Q: PTC range? A: −50 to 150 °C.
Q: Output? A: Relay switch output.
Q: What should I send for a quote? A: Sensor/setpoint, quantity, ship-to.
Links
| Parameter | Value |
|---|---|
| Measuring range | PTC probe −58 to 302 °F (−50 to 150 °C); NTC −58 to 230 °F (−50 to 110 °C) |
| Accuracy | ±1% FS |
| Output | R1 SPDT 20 A @ 240 VAC; R2 SPDT 8 A @ 240 VAC (dual-stage); inductive 3 A |
| Ambient temperature | 32 to 104 °F (0 to 40 °C) |
| Display | 3-digit LED plus sign; single-stage 1° resolution; dual-stage 0.1° below 100 |
| Approvals | CE; cURus |
| Input | PTC 1000 Ω @ 25 °C or NTC 10 kΩ @ 25 °C thermistor |
| Horsepower | R1 2 HP @ 240 VAC |
| Control Type | On/off single-stage or dual-stage |
| Power | 90–255 VAC or 12–24 VAC/VDC (±10%) by model; 3.6 VA |
| Enclosure | NEMA 4X (IP66) weatherproof housing |
| Weight | 1.2 lb (544 g) |
| Memory | Non-volatile parameter memory; physical jumper + passcode lock |
| Special Features | Configuration key programming; multiple conduit knockouts; TS-8T probe included on non-NP models |