--- product_id: 114237986 title: "R448 AVR for Leroy Somer | Automatic Voltage Regulator | Exact Generic Replacement for R448 | 2 Year Warranty!" brand: "thunder parts" price: "€ 212.98" currency: EUR in_stock: true reviews_count: 2 category: "Thunder Parts" url: https://www.desertcart.com.cy/products/114237986-r448-avr-for-leroy-somer-automatic-voltage-regulator-exact-generic store_origin: CY region: Cyprus --- # 10A overload current, 10s protection 150V - 5060Hz shunt supply range Built-in electronic overload & short circuit protection R448 AVR for Leroy Somer | Automatic Voltage Regulator | Exact Generic Replacement for R448 | 2 Year Warranty! **Brand:** thunder parts **Price:** € 212.98 **Availability:** ✅ In Stock ## Summary > ⚡ Power up with confidence — the ultimate voltage guardian for your generator! ## Quick Answers - **What is this?** R448 AVR for Leroy Somer | Automatic Voltage Regulator | Exact Generic Replacement for R448 | 2 Year Warranty! by thunder parts - **How much does it cost?** € 212.98 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.com.cy](https://www.desertcart.com.cy/products/114237986-r448-avr-for-leroy-somer-automatic-voltage-regulator-exact-generic) ## Best For - thunder parts enthusiasts ## Why This Product - Trusted thunder parts brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Effortless Reset:** Simple reset by stopping the generator or cutting supply voltage, minimizing downtime. - • **Reliable Longevity:** Backed by a 2-year warranty, guaranteeing durability and peace of mind. - • **Wide Voltage Sensing:** Supports multiple input voltage taps (110V, 220V, 380V) for versatile application. - • **Precision Power Control:** Exact generic replacement for R448 ensures seamless compatibility and peak performance. - • **Robust Overload Defense:** Automatically reduces excitation current after 10A overload for 10 seconds, protecting your generator. ## Overview The R448 AVR by Thunder Parts is a high-precision automatic voltage regulator designed as an exact generic replacement for the Leroy Somer R448 model. Featuring a robust 10A overload current protection, wide voltage sensing capabilities across 110V, 220V, and 380V inputs, and built-in electronic safeguards against overload, short circuit, and loss of sensing, it ensures stable and reliable generator performance. Supported by a 2-year warranty, this 2.47-pound device offers professional-grade durability and easy reset functionality, making it a trusted choice for maintaining optimal voltage regulation. ## Description Buy R448 AVR for Leroy Somer | Automatic Voltage Regulator | Exact Generic Replacement for R448 | 2 Year Warranty!: Voltage Regulators - desertcart.com ✓ FREE DELIVERY possible on eligible purchases Review: Worked well - Worked very well in generator FG Wilson Review: Buen producto ## Features - Exact Generic Replacement for R448 | 2 Year Warranty! Normal AVR supply power:2 auxiliary windings (X1, X2, ans Z, Z2) - Shunt supply: 150V - 5060Hz Rated overload current:10A, 10s. - Electronic built- in )overload, short circuit, and loss of sensing) protecting: If excitation current raises over 10 amps for more then 10 seconds, excitation current will drop automatically to about 1A. - To reset AVR protection, the generator must be stopped )or by cutting supply voltage to the AVR). Protection of power inputs by fuses F1 - Voltage sensing: 5VA insulated transformer with input voltage taps at: Terminals 0 - 110V = 95 to 140V. Terminals 0 - 220V = 170 to 260V. Terminals 0 - 380V = 340 to 520V ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B07LFCPGT6 | | Best Sellers Rank | #1,396,669 in Automotive ( See Top 100 in Automotive ) #469 in Automotive Replacement Alternator Voltage Regulators | | Brand | Thunder Parts | | Customer Reviews | 4.8 4.8 out of 5 stars (8) | | Date First Available | December 17, 2018 | | Is Discontinued By Manufacturer | No | | Item Weight | 2.47 pounds | | Item model number | R448 AVR | | Manufacturer | Thunder Parts | | Manufacturer Part Number | R448 AVR | | Package Dimensions | 8.9 x 6.38 x 2.64 inches | ## Product Details - **Brand:** Thunder Parts - **Color:** Black - **Manufacturer:** Thunder Parts - **Material:** Plastic | Metal - **UPC:** 194031263685 ## Images ![R448 AVR for Leroy Somer | Automatic Voltage Regulator | Exact Generic Replacement for R448 | 2 Year Warranty! - Image 1](https://m.media-amazon.com/images/I/61We4v+ycdL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Worked well *by R***R on February 27, 2025* Worked very well in generator FG Wilson ### ⭐⭐⭐⭐⭐ Review *by E***O on May 29, 2024* Buen producto ## Frequently Bought Together - R448 AVR for Leroy Somer | Automatic Voltage Regulator | Exact Generic Replacement for R448 | 2 Year Warranty! - Thunder Parts | AS440 | Generic Replacement for Cummins AS440 Automatic Voltage Regulator | 2 Year Warranty - DEVMO AVR SX460 Automatic Voltage Regulator Control Models Accessories Compatible with Stamford Generator Genset --- ## 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.com.cy/products/114237986-r448-avr-for-leroy-somer-automatic-voltage-regulator-exact-generic](https://www.desertcart.com.cy/products/114237986-r448-avr-for-leroy-somer-automatic-voltage-regulator-exact-generic) --- *Product available on Desertcart Cyprus* *Store origin: CY* *Last updated: 2026-04-25*