--- product_id: 44372060 title: "Functional Devices RIB2401B Power Relay, 20 Amp SPDT, 24 Vac/dc/120 Vac Coil, NEMA 1 Housing" brand: "rib" price: "286.50 DT" currency: TND in_stock: true reviews_count: 13 category: "Rib" url: https://www.desertcart.tn/products/44372060-functional-devices-rib2401b-power-relay-20-amp-spdt-24-vac store_origin: TN region: Tunisia --- # 20 Amp heavy-duty current NEMA 1 indoor-rated housing SPDT versatile switching Functional Devices RIB2401B Power Relay, 20 Amp SPDT, 24 Vac/dc/120 Vac Coil, NEMA 1 Housing **Brand:** rib **Price:** 286.50 DT **Availability:** ✅ In Stock ## Summary > ⚡ Elevate your electrical setup with the relay that means business! ## Quick Answers - **What is this?** Functional Devices RIB2401B Power Relay, 20 Amp SPDT, 24 Vac/dc/120 Vac Coil, NEMA 1 Housing by rib - **How much does it cost?** 286.50 DT with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/44372060-functional-devices-rib2401b-power-relay-20-amp-spdt-24-vac) ## Best For - rib enthusiasts ## Why This Product - Trusted rib brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Built to Last:** Durable NEMA 1 housing designed for reliable indoor use. - • **Smart Home Ready:** Perfect for integrating with Alexa/Echo for advanced automation. - • **Precision Engineering:** Silver contacts ensure low resistance and long-lasting operation. - • **Powerhouse Performance:** Handles up to 20 Amps for robust electrical control. - • **Dual Voltage Flexibility:** Operates seamlessly on 24 VAC/DC or 120 VAC coil voltages. ## Overview The Functional Devices RIB2401B is a high-performance 20 Amp SPDT power relay featuring dual coil voltage compatibility (24 VAC/DC and 120 VAC). Housed in a durable NEMA 1 enclosure, it’s engineered for reliable indoor applications including smart home automation and critical solar inverter setups. With silver contacts and screw mounting, it offers precision switching and easy installation, making it a top choice for professionals demanding dependable electrical control. ## Description 20 amp SPDT, 24 VAC/DC/120 VAC coil, sold as each, Functional Devices RIB2401B enclosed relay, 20 amp SPDT with 24 VAC/DC/120 VAC coil. Made in United States. Manufactured by Functional Devices, Inc. Review: ⭐⭐⭐⭐⭐ Works perfectly — gives smart control to old heaters - Used this Functional Devices RIB2401B relay to have an Ecobee Lite control a kerosene heater in my workshop to prevent freezing. Setup was simple — installed in minutes, and it’s handling 20A with no issues. I set it to maintain 40°F by offsetting the temperature delta and only trigger when it’s 3° below set point. Now I have full remote control, and the heater cycles exactly as intended. If you want to add smart control to a traditional heater or other high-current device, this relay makes it easy, reliable, and safe. Review: Good product for the $ - Arrived earlier than promised and worked as expected. Good purchase! ## Features - Product Type:Dip Switch - Item Package Weight:0.204 Kilograms - Item Package Dimension:6.35 cm L X11.176 cm W X17.018 cm H - Country Of Origin: United States ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B000LEUJU6 | | Best Sellers Rank | #21,601 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #9 in Electromechanical Relays | | Brand | RIB | | Brand Name | RIB | | Coil Resistance | 2.78 Ohms | | Coil Voltage | 120 Volts | | Connector Type | Screw | | Contact Current Rating | 20 Amps | | Contact Material | Silver | | Contact Type | Normally Open | | Current Rating | 20 Amps | | Customer Reviews | 4.6 out of 5 stars 465 Reviews | | Included Components | Accessories | | Item Weight | 7.84 ounces | | Manufacturer | Functional Devices, Inc | | Maximum Switching Current | 20 Amps | | Minimum Switching Voltage | 120 Volts (AC) | | Model | RIB2401B | | Mounting Type | Screw Mount | | Number of Terminals | 3 | | Operation Mode | Manual | | Part Number | RIB2401B | | UPC | 643129353819 | | Unit Count | 1.0 Count | | Upper Temperature Rating | 60 Degrees Celsius | | Warranty Description | No Warranty | | Wattage | 900 watts | ## Product Details - **Connector Type:** Screw - **Contact Material:** Silver - **Contact Type:** Normally Open - **Current Rating:** 20 Amps - **Mounting Type:** Screw Mount ## Images ![Functional Devices RIB2401B Power Relay, 20 Amp SPDT, 24 Vac/dc/120 Vac Coil, NEMA 1 Housing - Image 1](https://m.media-amazon.com/images/I/81amxWRLnuL.jpg) ## Questions & Answers **Q: Please verify: contacts are 20amp, 120v and 'coil' voltage can be anything from 24vac/dc to 120vac?** A: Yes to both questions. Enclosed Power Relay 20Amp SPDT. Coil voltage input is 24VAC/DC ; 120VAC ; 50-60 Hz **Q: Can a 24 volt thermostat connection be used with this to turn on a 120 volt circulator pump?** A: I am using the unit to power a duct booster fan, (120 V-1/4hp)from my 24v out put terminal on my HVAC circuitboard powering the relay, so you should be OK. **Q: What are the detentions of this relay?** A: did you mean the dimensions if so its 60mmx82mmx47mm tall **Q: I have two food warmers 120v @ 12amp that can not be on at the same time. Can I use this to allow only one warmer at a time?** A: The connection is a single switch (SPDT, means Single pole double throw, and that means on or off) If you connect one warmer it will turn on only that one. If you connect both to the relay it will overload it...it's a 20 amp device and 12 + 12 is 24, overload. If you want to get creative you can connect a manual switch that connects to one warmer or the other then connect this relay to that device. Then, depending on which way the manual switch is, that warmer will be controlled, move the manual switch the other way and it will operate the other warmer. ## Customer Reviews ### ⭐⭐⭐⭐⭐ ⭐⭐⭐⭐⭐ Works perfectly — gives smart control to old heaters *by B***U on February 7, 2026* Used this Functional Devices RIB2401B relay to have an Ecobee Lite control a kerosene heater in my workshop to prevent freezing. Setup was simple — installed in minutes, and it’s handling 20A with no issues. I set it to maintain 40°F by offsetting the temperature delta and only trigger when it’s 3° below set point. Now I have full remote control, and the heater cycles exactly as intended. If you want to add smart control to a traditional heater or other high-current device, this relay makes it easy, reliable, and safe. ### ⭐⭐⭐⭐⭐ Good product for the $ *by S***N on April 10, 2026* Arrived earlier than promised and worked as expected. Good purchase! ### ⭐⭐⭐⭐⭐ Perfect for 2-speed Whole House Fan control in conjunction with Alexa/Echo *by D***K on September 1, 2017* Well OK, it's not easy to get excited about a relay, but this one has worked perfectly for my application. I'm using it to switch speeds when controlling my 2-speed QuietCool ES-3100 whole house fan via my Alexa+SmartThings setup, in conjunction with two on/off Z-Wave switches (one switch controls power to the fan, the other selects Hi/Lo by using this relay). I know the 20 amp rating on this relay is overkill for the 670W fan motor, but I wanted to be prepared in case I want to up-size the fan in the future. I mounted this relay right onto the junction box that's part of the fan; a perfect fit. A lock nut is included with the relay for attaching through 1/2" openings on junction boxes. Very good quality product, highly recommended, with the connection diagram clearly marked on the unit itself. ## Frequently Bought Together - Functional Devices RIB2401B Power Relay, 20 Amp SPDT, 24 Vac/dc/120 Vac Coil, NEMA 1 Housing - Functional Devices RIBU1C Enclosed Pilot Relay, 10 Amp Spdt with 10-30 Vac/Dc/120 Vac Coil - AC Infinity RAXIAL S6, Inline Booster Duct Fan 6” with Speed Controller - Low Noise Inline HVAC Blower Can Fan for Basements, Bathrooms, Kitchens, Workshops --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.tn/products/44372060-functional-devices-rib2401b-power-relay-20-amp-spdt-24-vac](https://www.desertcart.tn/products/44372060-functional-devices-rib2401b-power-relay-20-amp-spdt-24-vac) --- *Product available on Desertcart Tunisia* *Store origin: TN* *Last updated: 2026-06-16*