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Limit Switch SWT01274, Opens @ 125 Close@ 95 Trane OEM Replacement

Limit Switch SWT01274, Opens @ 125 Close@ 95 Trane OEM Replacement

Low stock: 5 left

Regular price $73.99 USD
Regular price Sale price $73.99 USD
Sale Sold out
Shipping calculated at checkout.

Quick Feature Highlights

  • Genuine OEM Replacement for Trane & American Standard systems.

  • 125°F Safety Trip point for overheat protection.

  • Auto-Reset at 95°F for seamless operation.

  • High Amperage rating: 5.8 FLA @ 120V AC.

  • Direct Replacement for part numbers C340056P12 and SWT1274.

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Specifications

Product Details Specification

  • Brand: Trane / American Standard
  • Part Number: SWT01274
  • Description: Thermal Limit Switch
  • Open Temperature (Cut Out): 125°F
  • Close Temperature (Cut In): 95°F (30°F Differential)
  • Insert Length: Surface/Board Mount (Typically 3" overall size, not probe)
  • Electrical Rating: 5.8 FLA / 34.8 LRA @ 120V AC
  • Terminal Type: Quick Connect
  • Number of Poles: 1
  • Shipping Weight: 1.5 lbs

description

Trane / American Standard SWT01274 Genuine OEM Furnace Limit Switch (125°F / 3" Insert)


The Trane / American Standard SWT01274 is an original equipment manufacturer (OEM) safety component designed to prevent furnace overheating. This thermal limit switch is specifically calibrated to monitor the internal temperature of the plenum. It acts as a critical safety shut-off, designed to open the electrical circuit at 125°F, which safely shuts down the heating unit. Once the switch cools down to 95°F, it automatically closes the circuit, allowing the furnace to resume normal operation. This switch ensures the furnace remains within safe thermal parameters, protecting vital components like the heat exchanger.


Key Features

  • Low-Temperature Safety Limit: Calibrated to "Open" at 125°F, providing immediate shutdown in specific commercial or packaged units that operate at lower airflow temperatures.
  • Automatic Reset Function: The switch "Closes" the circuit at 95°F, ensuring the system can automatically recover after a temporary overheat condition is resolved.
  • Robust Electrical Rating: Handles substantial electrical loads (5.8 FLA @ 120V AC), compatible with a wide range of residential and commercial units.
  • Genuine OEM Reliability: This is an authentic Trane/American Standard part, built to precise factory standards, ensuring perfect fitment and safety compliance.


Product Details Specification

  • Brand: Trane / American Standard
  • Part Number: SWT01274
  • Description: Thermal Limit Switch
  • Open Temperature (Cut Out): 125°F
  • Close Temperature (Cut In): 95°F (30°F Differential)
  • Insert Length: Surface/Board Mount (Typically 3" overall size, not probe)
  • Electrical Rating: 5.8 FLA / 34.8 LRA @ 120V AC
  • Terminal Type: Quick Connect
  • Number of Poles: 1
  • Shipping Weight: 1.5 lbs


🛠️ HVAC Depot Pro Tip

A limit switch with a 125°F set point is usually a secondary or auxiliary limit in high-BTU downflow furnaces or specific packaged commercial units. It's often monitoring a different zone than the main limit. If this limit trips, ensure the ductwork configuration matches the manufacturer's specification (e.g., minimum duct length or required elbows). Low-temperature tripping often points to excessive airflow, which is rare, or more likely a misapplication of the limit switch location or a non-OEM replacement issue.


Cross-Reference

  • Superseded Part:

    SWT01274, SWT1274, 389649, 349020
  • Legacy / Manufacturing Numbers:

    C340056P12, X13540649120, 270159794707
  • Rating ID:

    L125-30F (Indicating 125°F trip and 30°F differential).


Model Compatibility

  • This limit switch is compatible with various Trane and American Standard high-efficiency furnaces and packaged units. Below are common compatible model prefixes; always verify the exact fit with your unit's data plate.


Trane Models:

  • TDD: TDD120R9V5A1, TDD120R9V5B0, TDD140C960A0, TDD140C960C1, TDD2C100ACV52AB, TDD2D120A9V5VAA
  • TUD: TUD1C080A9H41AA, TUD1C080A9H41BA


American Standard Models:

  • ADD: ADD120R9V5A1, ADD120R9V5C4, ADD140C960A1, ADD140R960C0, ADD2C100ACV52AC, ADD2D120A9V5VAB
  • AUD: AUD1C080A9H41BA, AUD1C080G9H41AA


Commercial Packaged Units:

  • 4YCC/4YCY/4YCZ: 4YCC4042A1090AA, 4YCC4060E1115AA, 4YCY5036A1090AD, 4YCZ5036E1090AA, 4YCZ6036C1090AB

Specification

Refund policy

Our refund and returns policy lasts 30 days. If 30 days have passed since your purchase, we can’t offer you a full refund or exchange. Please note there will be a 20% Re-stocking fee of product price.
To be eligible for a return, your item must be unused and in the same condition that you received it. It must also be in the original packaging. Model and serial number must match what is on the invoice and correct box information.
Exclusions:
•    Part with obvious signs of use of installation.
•    Original box was destroyed or could not be located by purchaser.
•    Any item not in its original condition, is damaged or missing parts for reasons not due to our error.
•    Any item that is returned more than 30 days after delivery
Part installation
HVAC Parts and Equipment Depot recommend this parts will be installed by a licensed professional contractor. HVAC Parts and Equipment Depot assumes no liability for any injuries or damages arising from the user information or products. 
Sale items
Only regular priced items may be refunded. Sale items cannot be refunded. Special Order items cannot be refunded. 
Exchanges
We only replace items if they are defective or damaged from Manufactory. If you need to exchange it for the same item, send us an email at hvacpartsstore@gmail.com and send your item to: HVAC Parts & Equipment Depot 1135 E Plano Parkway Suite 8 Plano Tx 75189.
Refunds
To complete your return, we require a receipt or proof of purchase within 30 days or less.
Once your return is received and inspected by management team, we will send you an email to notify you that we have received your returned item. We will also notify you of the approval or rejection of your refund.
If you are approved, then your refund will be processed, and a credit will automatically be applied to your credit card or original method of payment, within 7-14 Business days. HVAC Parts and Equipment Depot or its employees are not responsible for damaged items from manufactory.
Shipping returns
To return your product, you should mail your product to:
HVAC Parts & Equipment Depot
1135 E Plano Parkway Suite 8 Plano Tx 75074.
Customer will be responsible for paying for shipping. Shipping costs are non-refundable. If you receive a refund, the cost of return shipping will be deducted from your refund.
Depending on where you live, the time it may take for your exchanged product to reach you may vary.
If you are returning more expensive items, you may consider using a trackable shipping service or purchasing shipping insurance. We don’t guarantee that we will receive your returned item without a valid tracking number provided by your choice of delivery method.
Late or missing refunds
If you haven’t received a refund yet, first check your bank account again. This process takes approximately 7-14 business days depending on your Bank.
Then contact your credit card company, it may take some time before your refund is officially posted.
Next contact your bank. There is often some processing time before a refund is posted.
If you’ve done all of this and you still have not received your refund yet, please contact us at hvacpartsstore@gmail.com
Special Orders
Special orders should be picked up within 30 Days of purchase day. Your items will be considered abandoned and will be returned to manufacturer. There will be a 100% Re-stocking fee for abandoned items. 

Need help?
Contact us via email hvacpartsstore@gmail.com or Phone 214-734-5222 for questions related to refunds and returns.
Thank you for choosing HVAC Parts & Equipment Depot.

Michel & Siso are very knowledgeable and explain everything to where I could understand! Amazing experience! Thank you will always come here for any AC needs. Trustworthy and excellent customer service.

Celest G.
Verified Customer
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