Skip Content

Line Volt Mechanical Tstat,24 to 277VAC close
close x

Using 360° Viewing:

  1. Rotate: Use top-to-bottom, side-to-side by use of mouse arrow.
  2. Zoom In: Double click on image.
  3. Zoom Out/Reset: Put photo at full zoom & then double click.
How can we improve our Product Images?

Line Volt Mechanical Tstat, 24 to 277VAC

Price $66.00 / each

Please sign in or register to access lists

Confirm ZIP Code to determine availability.


Invalid Zip Code


Ship to: (Change)


Invalid Zip Code

  • Item # 4E636
  • Mfr. Model # TF115-001
  • NSN # 5930-01-354-6684
  • UNSPSC # 41112209
  • Catalog Page # 4220
  • Shipping Weight 0.7 lbs.
Country of Origin ChinaCountry of Origin is subject to change.
Note: Product availability is real-time updated and adjusted continuously. The product will be reserved for you when you complete your order. More

Technical Specs

  • ItemLine Volt Mechanical Tstat
  • Switch TypeSPDT
  • Switch ActionOpen/Close on Rise
  • Number of Switches1
  • Control Range40 Degrees to 110 Degrees F
  • Differential+/- 3 Degrees F
  • Height7"
  • Width3"
  • Depth2-39/64"
  • Temp. Sensitivity+/- 3 Degrees F
  • Sensor TypeStainless Steel, Fluid Filled Coil
  • Sensing Bulb Dia.1-1/4"
  • FeaturesAgricultural Temperature Control, Tolerate Continuous Spraying with Water, High Humidity, Airborne Contaminants, Resistant to Corrosive Conditions, Ventilation Control
  • For Use WithAgricultural, Commercial and Industrial Applications
  • ColorGray
  • ApplicationHeating and Cooling
  • Enclosure TypeRain Tight NEMA 4X
  • Voltage Range24, 120 to 277VAC
  • Full Load Amps @ 120V15A
  • Full Load Amps @ 240VAC12A
  • Locked Rotor Amps @ 120V80A
  • Locked Rotor Amps @ 240V60A
  • Contact Rating Resistive @ 120V25A
  • Resistive Amps @ 208VAC25A
  • Contact Rating Resistive @ 240V25A
  • Contact Rating Resistive @ 277V20A
  • Pilot Duty Contacts (VA)125VA
  • Mounting TypeSurface
  • Mounting LocationIndoor/Outdoor
  • Number of Stages1
  • StandardsUL, CSA, NEC 547

Compliance and Restrictions



Versatile heating/cooling unit is designed with stainless steel sensing elements that can handle corrosive conditions. Can be easily mounted to a standard 2" x 4" vertical box and include a SPDT switch. Analog display. Also features NEMA 4X enclosure that is suitable for locations that are wet or mildly corrosive, with high humidity or airborne contaminants.

Alternate Products

Rated 3 out of 5 by 3reviewers.
Rated 4 out of 5 by My work Sunglo Greenhouses purchases these for our 110V power packages. We order them in bulk and really have not had any trouble with them. Maybe 1-2 times a year there will be a defective one but other than that our customers do not complain and we even use 1 on our display greenhouse. I would say you get what you pay for! September 22, 2014
Rated 2 out of 5 by I bought 3 of these to control heaters in greenhouses and they appear to be well-made and resistant to water and humidity. However, comparing the three of them side-by-side, they are very inconsistent with regard to temperature and to the on/off range. One was so far out that I had to ask for a replacement. For my purposes, I would not buy them again. November 16, 2012
Rated 3 out of 5 by We use a lot of this product For the cost factor they are OK. They work great for something where you don't need a tight temperature range. They hold up well in electrical storm conditions and we use them for backups on electronic controls that may be damaged in the same manner. April 5, 2012
1-3 of 3

Product Reviews Disclaimer:
Grainger is neither responsible for, nor does it endorse, the content of any product review or statement posted. Any statements posted constitute the statements of the poster and are not the statements of Grainger. The statements posted by Grainger employees with the Grainger employee badge represent the views of such employees and are not the statements of Grainger. Grainger makes no representations as to the appropriateness, accuracy, completeness, correctness, currentness, suitability, or validity of any product review or statements posted, including those posted by employees with the Grainger employee badge, and is not liable for any losses, injuries or damages which may result from any such product review or statements. Use of any linked web site provided in a product review or post is at the user's own risk.

Product Q&A

(1 Question : 1 Answer)

Ask your questions. Share your answers.

« Back
2 years, 2 months ago
Read all my Q&A
Please wait while more information about Therm is loaded.
Additional information about Therm could not be loaded.
0out of 0found this question helpful.
Was this helpful?helpful0unhelpful0
1 Person needs an answerI have this question too


From the specifications I can find for the WT11A, it would be interchangable with the 4E636. Both are NEMA 4X enclosures, 25 resistive amps, and SPDT switching.

Thank you for using Grainger Ask and Answer.
2 years, 2 months ago
Read all my Q&A
Please wait while more information about jmurillo is loaded.
Additional information about jmurillo could not be loaded.
0out of 0found this answer helpful.
Was this helpful?helpful0unhelpful0
1 of 1
1 of 1