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TSW-TT
Immersion Snap-Action Bimetallic Temperature Switches
Models In Stock
- Low Voltage/Low Current Applications
- 1/4 NPT Mounting Threads
- Factory Preset Temperature
- Direct Action Contacts/Minimum Hysteresis
TSW-TT
From
C$
79.92
Models In Stock
Product Overview
- Accuracy ± 3 °C (± 5.4 °F)
- Cable Length 6 in
- Electrical Connection Wire Leads
- Electrical Rating 3 A @ 240 Vac
- Operating Humidity 0 to 80% RH
- Operating Temperature, Max 325 °F
- Operating Temperature, Min 0 °F
- Measurement Pressure, Max 5000 psi
- Probe Diameter 0.38 in
- Probe Length 1 in
- Process Connection Size 1/4 in
- Process Connection Type NPT Male
- Sensor Material Brass
- Series ID TSW-TT
- Setpoint Type Fixed
- Storage Humidity, Max Humidity < 90%
- Switch Activation Rising
Supported Applications
The Omega TSW-TT Series consists of bi-metal immersion temperature switches designed for low voltage and low current applications requiring economical temperature control. These devices activate with a rise in temperature, providing direct action switching suitable for environments rated NEMA 4 and NEMA 13.
Operating Conditions & Performance
The series offers factory-preset setpoints ranging from 4 to 149°C (40 to 300°F) with a tolerance of ±2.8°C (5°F). The maximum process temperature is rated at 163°C (325°F), and the switches are designed to withstand an external pressure up to 5000 psi. Electrical performance includes current ratings of 3 A @ 240 Vac or 2 A @ 24 Vdc for resistive loads.
Key physical specifications include:
- Probe Diameter: ø9.5 mm (0.38 in)
- Insertion Length: 25.4 mm (1")
- Process Connection: ¼ NPT male
- Electrical Connection: 152.4 mm (6") wire leads
Contact and Circuit Details
The switches feature gold diffused fine silver contacts with minimum hysteresis. The circuit form is available as SPST-NO or SPST-NC depending on the specific model selection.
Configuration Options
The TSW-TT series provides a comprehensive range of fixed setpoints to accommodate diverse control points within the 4°C (40°F) to 149°C (300°F) envelope. Variants are distinguished by their contact configuration and specific temperature activation point.
- Contact Types: Models are available with Normally Open (NO) or Normally Closed (NC) contacts.
- Setpoint Increments: Factory-preset options cover the full range in 10°F increments, starting at 4°C (40°F) and extending to 149°C (300°F).
- Housing Rating: All variants are suitable for NEMA 4 and NEMA 13 environments.
Key Product Differences
The primary distinction between models in the TSW-TT series is the contact state (Normally Open vs. Normally Closed) and the specific setpoint temperature encoded in the model number. The ordering pattern follows TSW-TT-F<CONTACT_TYPE><SETPOINT>0R/WL.
- Normally Open Models: Identified by the suffix "F3A" (e.g., TSW-TT-F3A-100R/WL for 4°C/40°F).
- Normally Closed Models: Identified by the suffix "F3B" (e.g., TSW-TT-F3B-100R/WL for 4°C/40°F).
The series carries RoHS compliance and includes a 1 YEAR WARRANTY. Specific wetted materials, sheath material, or housing material are not specified in the source documentation.
PDFs & Manuals
Show Ratings & Reviews
Rated 4 out of
5
by
escyr from
Leads are way too short.
Good unit for the price, but the leads are way to short to be usable without splicing.
Date published: 2016-07-29
Rated 4 out of
5
by
Fred2020 from
Temperature sensor
Works as expected. A bit disappointed that it came with individual conductors as flying leads as opposed to a cable with jacket as pictured. Reviewing the description in detail it is indeed stated it comes with conductors. I suggest updating the picture.
Date published: 2020-04-27
Rated 5 out of
5
by
Allen from
Review of Omega stock
Found this company on the internet. So happy to find the item in stock and didn't have weeks of wait time. Just what we needed.
Date published: 2016-04-04
Rated 5 out of
5
by
Raymond2102 from
Bi-Metal review
Work as designed, have been buying this for years now.
Date published: 2024-07-31
Rated 5 out of
5
by
Mark W from
Temperature switch
Good quality product. Works well for our application.
Date published: 2024-07-09
Rated 3 out of
5
by
Anonymous from
almost perfect
works great. needs threaded end on wire side for conduit
Date published: 2020-09-14
what is the minimum ambient temperature
For Maximum Temperature. The Minimum Temperature is 32°F.
Date published: 2020-06-27
Does this temperature switch have UL or CSA approval? If so can you email me the certification document
Thank you for your request. Unfortunately the part numbers you have provided are not CSA, UL and/or cUL listed/rated.
Date published: 2023-03-10
Please clarify NO vs NC. The TSW-TT-F3B-90R/WL is a NC model. Its temperature SP is 90 deg-F. Does this mean that the contacts are closed at 60 deg-F and open at 100 deg-F?
Thank you for your inquiry. All switches activate with a rise in temperature meaning the relay will switch its state when the temperature exceeds the set point.
Date published: 2025-03-23
Hello, I like to question the immersion temperature switch TSW-TT-F3B-190R/WL applications. Can the switch also be used for non-liquid applications? Such as air temperature?
Air is also consider a fluid. It does work for air
Date published: 2024-08-14
Does the switch use the brass body as an electrical connection(ground)? Or does the lead provide two wires?
Thank you for your inquiry. This device provide to two wires, (+) and (-).
Date published: 2022-05-23
Is this switch UL353 approved?
Thank you for your inquiry. This product does not carry any UL Approvals.
Date published: 2021-10-21
can I use this switch to make a relay with a 115v coil
Hi George,
The switch can be used for small loads such as relay coil.
Best regards
OMEGA
Date published: 2021-01-05
If contact opens at 230 Degrees F, what temperature closes circuit again? Also is this compatible with 120v (AC)? Thank you.
Thank you for your inquiry Al1510. The relay contact would close when the temperature drops below 230 F and yes this is compatible with 120 VAC.
Date published: 2021-12-31