--- product_id: 15546048 title: "50A Low Cost Transfer Switch" brand: "southwire" price: "₪1259" currency: ILS in_stock: true reviews_count: 13 category: "Southwire" url: https://www.desertcart.co.il/products/15546048-50a-low-cost-transfer-switch store_origin: IL region: Israel --- # 30-second auto transfer delay 50A current rating Automatic generator/shore power switch 50A Low Cost Transfer Switch **Brand:** southwire **Price:** ₪1259 **Availability:** ✅ In Stock ## Summary > ⚡ Stay powered, protected, and ahead of the pack on every adventure! ## Quick Answers - **What is this?** 50A Low Cost Transfer Switch by southwire - **How much does it cost?** ₪1259 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.co.il](https://www.desertcart.co.il/products/15546048-50a-low-cost-transfer-switch) ## Best For - southwire enthusiasts ## Why This Product - Trusted southwire brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Full RV Protection:** Bumper-to-bumper surge guard shields your entire RV from faulty park power, safeguarding your investment. - • **Mechanical Reliability:** Durable mechanical interlocking contactors provide robust, fail-safe switching every time. - • **Seamless Power Switching:** Automatically transfers to generator power after a 30-second delay, ensuring uninterrupted RV operation. - • **Smart Power Prioritization:** Generator power dominates when available, with shore power reactivating smoothly after shutdown. - • **Easy Installation & Monitoring:** Panel mount design with clear diagnostics compatibility lets you install and monitor with confidence. ## Overview The Technology Research 40100 50 Amp Surge Guard Automatic Transfer Switch is a premium RV power management device that automatically switches between shore and generator power with a 30-second delay. Featuring mechanical interlocking contactors and full RV surge protection, it ensures safe, reliable power delivery while protecting your vehicle from faulty park power. Designed for easy panel mounting and continuous operation, this switch is a must-have for sophisticated motorized coaches seeking seamless power transitions and peace of mind. ## Description TRC SURGE GUARD AUTOMATIC TRANSFER SWITCHES. Permanently install Surge Guard protection in your RV. Protects RV bumper to bumper from faulty park power. Due to the increased sophistication of high-end motorized coaches, the additional monitoring and diagnostic features plus the benefits of a transfer switch are a plus for some RV owners. Mechanical interlocking contactors. Time delay at power up. Transfers to generator power automatically when energized after 30 second delay. When both shore power and generator power are available, generator dominates after a 30 second delay. Once the generator is shut down, shore power activates after a 3-4 second delay. Review: Exactly what I needed and works great. - When I first purchased I questioned if this actually a SouthWire product, due to the description saying Technology Research. I needed this quickly as we were headed out camping the next day. I wired our shore power to the generator relay and disconnected the generator. The inverter end up arriving late that night we left. Opened when we got back and found it is a true SouthWire product. Installed and tested. Works as it should. None of the RV places around us had one in stock. It does have a slight buzz to it, but the old one did also. Installation was simple for me with regular hand tools. Review: The Unit has some weight to it but makes it feel like it's quality - Update 2016May7: I used some rubber washers that I found at lowes to put behind the mounting holes of the unit and now you can only hear the buzzing if you're standing directly in front of it trying to hear it. So far this has been in production for about a month now, and i haven't had any reason to worry. Works 100% as expected thus far. I have also posted a picture of what the actual unit looks like. I have added a Volt meter in the front of mine so I know what is going on so don't expect that when you order one. The unit is indeed plastic. The EMT holes are a considerable distance from anything you might be mounting it to so you'll need to bend pipe to get it in these holes. I drilled new ones lower for a cleaner install. The Unit has some weight to it but makes it feel like it's quality. There is a low buzzing coming from the unit. Nothing too crazy but a buzz none the less. I've only had the unit in operation for about 24 hours so far. I will post an update should I have any issues. This unit will be in operation 24/7 from here on. ## Features - TRC SURGE GUARD AUTOMATIC TRANSFER SWITCHES - Permanently install Surge Guard protection in your RV - Protects RV bumper to bumper from faulty park power - Benefits of a transfer switch are a plus for some RV owners; mechanical interlocking contactors, time delay at power up, Transfers to generator power automatically when energized after 30 second delay ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B00PVG2I3A | | Actuator Type | mechanical | | Best Sellers Rank | #40,094 in Electronics ( See Top 100 in Electronics ) #363 in Surge Protectors | | Brand | Southwire | | Brand Name | Southwire | | Circuit Type | parallel | | Color | Multi | | Compatible Devices | RV power systems | | Compatible with Vehicle Type | Recreational Vehicle (RV) | | Connectivity Protocol | X-10 | | Connector Type | 4-pin Mini Din | | Contact Material | Metal | | Contact Type | Normally Open | | Control Method | Touch | | Control Type | automatic | | Controller Type | mechanical interlocking contactors | | Current Rating | 50 A | | Customer Reviews | 4.4 out of 5 stars 242 Reviews | | Global Trade Identification Number | 00024098401006 | | Included Components | ITEM | | International Protection Rating | IP40 | | Item Dimensions | 13.5 x 9.13 x 6 inches | | Item Type Name | 50A Low Cost Transfer Switch | | Item Weight | 6 pounds | | Manufacturer | Technology Research | | Material Type | Blend | | Model | 40100 | | Mounting Type | Panel Mount | | Number of Items | 1 | | Number of Positions | 2 | | Operating Voltage | 120 volts_of_alternating_current | | Operation Mode | automatic | | Part Number | 40100 | | Specification Met | certified frustration-free | | Switch Type | Mechanical Interlocking Contactors | | Terminal | Physical | | UPC | 024098401006 | | Unit Count | 1 Count | | Upper Temperature Rating | 130 °F | | Wattage | 6000 watts | ## Product Details - **Brand:** Southwire - **Connector Type:** 4-pin Mini Din - **Contact Type:** Normally Open - **Current Rating:** 50 A - **Item dimensions L x W x H:** 13.5 x 9.13 x 6 inches - **Material:** Blend - **Operating Voltage:** 120 volts_of_alternating_current - **Operation Mode:** automatic - **Switch Type:** Mechanical Interlocking Contactors - **Terminal:** Physical ## Images ![50A Low Cost Transfer Switch - Image 1](https://m.media-amazon.com/images/I/51rPtteDaaL.jpg) ## Questions & Answers **Q: I have an inverter, generator and shore power. my current transfer switch is an old iota. will the 40100 work and are the wiring diagrams any good?** A: Yes, I just used this to replace my Iota. **Q: Can this be used in a small home outside of the US where regulations are not so strict?** A: Food Trucks used **Q: Will this replace a model 41260?** A: you should call south wire i think it will i have a 2020 Berkshire 45A XLT it fits that for sure just be care full mark all the wires and take pictures if you mix up the wires it will start a fire **Q: i have a 94 pace arrow in need of this item , I am a pretty good diy guy , is it a hard or unsafe replacement job? thanks** A: Not unsafe as long as the generator isn't running and you don't have the coach plugged into the wall. I just labeled the old wires and took a couple photos of it before taking it apart to make sure I didn't mix the feeds up and then the install took less than an hour so it should be pretty straight forward as long as you are able to get to the area easily. Good Luck :) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Exactly what I needed and works great. *by S***L on June 27, 2026* When I first purchased I questioned if this actually a SouthWire product, due to the description saying Technology Research. I needed this quickly as we were headed out camping the next day. I wired our shore power to the generator relay and disconnected the generator. The inverter end up arriving late that night we left. Opened when we got back and found it is a true SouthWire product. Installed and tested. Works as it should. None of the RV places around us had one in stock. It does have a slight buzz to it, but the old one did also. Installation was simple for me with regular hand tools. ### ⭐⭐⭐⭐⭐ The Unit has some weight to it but makes it feel like it's quality *by J***P on March 25, 2016* Update 2016May7: I used some rubber washers that I found at lowes to put behind the mounting holes of the unit and now you can only hear the buzzing if you're standing directly in front of it trying to hear it. So far this has been in production for about a month now, and i haven't had any reason to worry. Works 100% as expected thus far. I have also posted a picture of what the actual unit looks like. I have added a Volt meter in the front of mine so I know what is going on so don't expect that when you order one. The unit is indeed plastic. The EMT holes are a considerable distance from anything you might be mounting it to so you'll need to bend pipe to get it in these holes. I drilled new ones lower for a cleaner install. The Unit has some weight to it but makes it feel like it's quality. There is a low buzzing coming from the unit. Nothing too crazy but a buzz none the less. I've only had the unit in operation for about 24 hours so far. I will post an update should I have any issues. This unit will be in operation 24/7 from here on. ### ⭐⭐⭐⭐⭐ Great price *by T***Y on January 15, 2026* Was exact replacement at a much better price. I originally bought a replacement contactor but this was much easier replacement --- ## 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.co.il/products/15546048-50a-low-cost-transfer-switch](https://www.desertcart.co.il/products/15546048-50a-low-cost-transfer-switch) --- *Product available on Desertcart Israel* *Store origin: IL* *Last updated: 2026-11-11*