--- product_id: 138876120 title: "Endurance Pro 90-T40F3 Class 2 Transformers Thermostat Energy Limiting with Foot Mount, 24V Replacement for White Rodgers Emerson" brand: "endurance pro" price: "€ 31.38" currency: EUR in_stock: true reviews_count: 8 url: https://www.desertcart.it/products/138876120-endurance-pro-90-t40f3-class-2-transformers-thermostat-energy-limiting store_origin: IT region: Italy --- # 24V Power Corded Electric Easy Installation Endurance Pro 90-T40F3 Class 2 Transformers Thermostat Energy Limiting with Foot Mount, 24V Replacement for White Rodgers Emerson **Brand:** endurance pro **Price:** € 31.38 **Availability:** βœ… In Stock ## Summary > πŸ”§ Transform Your Control Game! ## Quick Answers - **What is this?** Endurance Pro 90-T40F3 Class 2 Transformers Thermostat Energy Limiting with Foot Mount, 24V Replacement for White Rodgers Emerson by endurance pro - **How much does it cost?** € 31.38 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.it](https://www.desertcart.it/products/138876120-endurance-pro-90-t40f3-class-2-transformers-thermostat-energy-limiting) ## Best For - endurance pro enthusiasts ## Why This Product - Trusted endurance pro brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - β€’ **Risk-Free Purchase:** Comes with a 1-year warranty for peace of mind. - β€’ **Durable Construction:** Built for industrial applications, ensuring longevity and reliability. - β€’ **Powerful Performance:** Designed for 24V AC control systems, ensuring reliable operation. - β€’ **User-Friendly Design:** Color-coded leads simplify installation for a hassle-free setup. - β€’ **Versatile Compatibility:** Replaces various transformers with equal or smaller VA ratings. ## Overview The Endurance Pro 90-T40F3 Class 2 Transformers Thermostat is a robust and versatile solution for your HVAC needs, designed to operate seamlessly in 24V AC control systems. With easy installation features and a 1-year warranty, it’s the perfect choice for professionals seeking reliability and efficiency. ## Description Endurance Pro 90-T40F3 Class 2 Transformers Thermostat Energy Limiting with Foot Mount, 24V Replacement for White Rodgers Emerson ## Features - [Product description]: Endurance Pro 90-T40F3 Class 2 Transformers Thermostat, Energy Limiting with Foot Mount, 24V Replacement for White Rodgers Emerson. The transformers are designed for use in 24, 12, or 2.5 Volts AC control system, including air conditioning circuits, thermostats, gas valves, relays and or other applications that do not exceed the listed ratings. It can be used to replace any transformers of same primary voltage and equal or smaller VA ratings. - [Specification]: Primary: 120/208/240V, 50/60Hz, White, Black, Red, Orange, Secondary: 24V, 40VA, Blue, Brown - [Usage]: For industrial, heating and air conditioning controls applications. Foot Mounting - [Ease of use]: Color coded primary leads for easy installation. Instructions included. - [Risk free shopping]: This part by Endurance Pro come with a 1 year, no questions asked, no hassle war ranty. ## Technical Specifications | Specification | Value | |---------------|-------| | Brand | Endurance Pro | | Model Name | Endurance Pro 90-T40F3 Class 2 Transformers Thermostat Energy Limiting with Foot Mount, 24V Replacement for White Rodgers Emerson | | Specific Uses For Product | Air Conditioning Circuits, Thermostats, Gas Valves, Relays | | Power Source | Corded Electric | | Item Weight | 1.26 Pounds | | Voltage | 24 Volts | | Control Method | Touch | | Mounting Type | Foot Mount | | Style | Industrial | | Backlight | No | | UPC | 816325013409 | | Manufacturer | Endurance Pro | | Part Number | 6080-110: 90-T40F3, 40301F | | Item Weight | 1.26 pounds | | Product Dimensions | 2.25 x 3.25 x 2 inches | | Item model number | 90-T40F3, 40301F, 90T40F3 | | Item Package Quantity | 1 | | Batteries Included? | No | | Batteries Required? | No | ## Images ![Endurance Pro 90-T40F3 Class 2 Transformers Thermostat Energy Limiting with Foot Mount, 24V Replacement for White Rodgers Emerson - Image 1](https://m.media-amazon.com/images/I/61kKE1SQMmL.jpg) ![Endurance Pro 90-T40F3 Class 2 Transformers Thermostat Energy Limiting with Foot Mount, 24V Replacement for White Rodgers Emerson - Image 2](https://m.media-amazon.com/images/I/610x41qEGwL.jpg) ![Endurance Pro 90-T40F3 Class 2 Transformers Thermostat Energy Limiting with Foot Mount, 24V Replacement for White Rodgers Emerson - Image 3](https://m.media-amazon.com/images/I/619k5NgZazL.jpg) ![Endurance Pro 90-T40F3 Class 2 Transformers Thermostat Energy Limiting with Foot Mount, 24V Replacement for White Rodgers Emerson - Image 4](https://m.media-amazon.com/images/I/61dLnFxT7vL.jpg) ![Endurance Pro 90-T40F3 Class 2 Transformers Thermostat Energy Limiting with Foot Mount, 24V Replacement for White Rodgers Emerson - Image 5](https://m.media-amazon.com/images/I/61B6RDYr6bL.jpg) ## Questions & Answers **Q: Is the blue or brown wire common on 24v side** A: There is no "common" on the 24 vac side. The 24 vac side (secondary) is electrically isolated from the input side (primary). **Q: Can this be used for 18 volts AC and no more than 1.5 amps** A: Yes, but not easily. The safe & easy way would be to use a variable transformer: https://www.amazon.com/Mophorn-Variable-Transformer-Voltage-Converter/dp/B07XKXQXWL/ref=sr_1_6?dchild=1&keywords=variable+transformer&qid=1594088888&s=electronics&sr=1-6 **Q: Is the output 24 v ac volts** A: yes **Q: Can this be hooked up to both a relay and the c/r for thermostat? If so how?** A: If you're wanting to energize a relay along with the contactor then that shouldn't be a problem. Make sure the coil of the contactor and relay combined are below the transformer VA capacity and that the relay has a 24vac coil. With that you should be able to connect the relay coil in parallel with the contactor coil. ## Customer Reviews ### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars Great product *by A***R on Reviewed in the United States on July 21, 2024* I like the mounting and the 120 / 240 volt option ### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars 24 V transformer *by C***. on Reviewed in the United States on December 18, 2023* Works well as described ### ⭐⭐⭐⭐ 4.0 out of 5 stars Does the job but doesn't seem to be made nearly as well as original equipment. *by D***D on Reviewed in the United States on April 5, 2022* I used this to replace the low voltage transformer on my circa 1993 FHP "water chilled" Heat Pump. The low voltage is used to power the thermostat, blower motor relay, compressor relay and the heat pump flow reversing valve relay. It works, and wiring was pretty simple but I wouldn't try installing this if you don't know what you are doing as you could easily fry those relays and your thermostat if you wire it incorrectly. I'm getting 27vac which is a little high but I guess that's just the low quality rearing it's ugly head (made in China like everything else these days? :-( ). This was a temporary fix anyway until I can get an OEM replacement. --- ## Why Shop on Desertcart? - πŸ›’ **Trusted by 1.3+ Million Shoppers** β€” Serving international shoppers since 2016 - 🌍 **Shop Globally** β€” Access 737+ million products across 21 categories - πŸ’° **No Hidden Fees** β€” All customs, duties, and taxes included in the price - πŸ”„ **15-Day Free Returns** β€” Hassle-free returns (30 days for PRO members) - πŸ”’ **Secure Payments** β€” Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** β€” Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.it/products/138876120-endurance-pro-90-t40f3-class-2-transformers-thermostat-energy-limiting](https://www.desertcart.it/products/138876120-endurance-pro-90-t40f3-class-2-transformers-thermostat-energy-limiting) --- *Product available on Desertcart Italy* *Store origin: IT* *Last updated: 2026-05-11*