--- product_id: 657751978 title: "AS440 AVR - Automatic Voltage Regulator - Exact Generic Replacement - 2 Year Warranty!" brand: "thunder parts" price: "£46.42" currency: GBP in_stock: true reviews_count: 4 category: "Thunder Parts" url: https://www.desertcart.co.uk/products/657751978-as440-avr-automatic-voltage-regulator-exact-generic-replacement-2-year store_origin: GB region: United Kingdom --- # ±1.0% Voltage Regulation Remote Voltage Trimmer Compatible Fast 20ms AVR Response Time AS440 AVR - Automatic Voltage Regulator - Exact Generic Replacement - 2 Year Warranty! **Brand:** thunder parts **Price:** £46.42 **Availability:** ✅ In Stock ## Summary > ⚡ Power Perfected: Stay Ahead with Precision Voltage Control! ## Quick Answers - **What is this?** AS440 AVR - Automatic Voltage Regulator - Exact Generic Replacement - 2 Year Warranty! by thunder parts - **How much does it cost?** £46.42 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.co.uk](https://www.desertcart.co.uk/products/657751978-as440-avr-automatic-voltage-regulator-exact-generic-replacement-2-year) ## 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 - • **Robust & Reliable:** Built to endure harsh environments from -40°C to +70°C with vibration resistance. - • **Customizable Output:** Fine-tune generator voltage remotely with an external trimmer for tailored power delivery. - • **Rapid System Response:** Experience lightning-fast 20ms AVR response, minimizing fluctuations and downtime. - • **Plug-and-Play Replacement:** Exact generic fit with 2-year warranty ensures hassle-free upgrade and peace of mind. - • **Precision Voltage Control:** Maintain stable power with ±1.0% regulation for flawless device performance. ## Overview The AS440 AVR is a high-performance automatic voltage regulator designed for 1-phase generators, offering ±1.0% voltage regulation, jumper-selectable input voltage ranges (100-130V or 190-264V AC), and a rapid 20ms response time. It supports remote voltage adjustment, external analog inputs, and parallel generator operation with droop CT connection. Engineered for durability, it operates reliably in extreme temperatures and vibration conditions, backed by a 2-year warranty for dependable power management. ## Description AS440 AVR - Automatic Voltage Regulator - Exact Generic Replacement - 2 Year Warranty! Provision is made for the connection of a remote voltage trimmer, allowing the user fine control of the generator's output. An analogue input is provided allowing connection to a Newage Power Factor controller or other external devices with compatible output. he AVR has the facility for droop CT connection, to allow parallel running with other similarly equipped generators. Technical specification SENSING INPUT Voltage Jumper selectable 100-130 Vac 1 phase or 190-264 Vac 1 phase Frequency 50-60 Hz nominal POWER INPUT Voltage 100-264 V ac 1 phase Frequency 50-60 Hz nominal OUTPUT Voltage 82 V d. C. @ 200 V a. C. Current continuous 4A (see note 1). Transient 7.5A for 10 secs. Resistance 15 ohms min (10 ohms min when input volts is less than 175 ac) REGULATION +/- 1.0% (see note 2) THERMAL DRIFT 0.03% per deg. C change in AVR ambient (see note 3) TYPICAL SYSTEM RESPONSE AVR response: 20 ms Filed current to 90%: 80 ms Machine Volts to 97%: 300 ms EXTERNAL VOLTAGE ADJUSTMENT +/-10% with 1 k ohm 1 watt trimmer (see note 4) Increasing resistance lowers voltage. UNDER FREQUENCY PROTECTION Set point: 94 -98% Hz (see note 5) UNIT POWER DISSIPATION 12 watts maximum BUILD UP VOLTAGE 4 Volts @ AVR terminals ANALOGUE INPUT Maximum input: +/- 5 Vdc (see note 6) Sensitivity: 1V for 5% Generator Volts (adjustable) Input resistance 1k ohm QUADRATURE DROOP INPUT 10 ohms burden Max. Sensitivity: 0.07 A for 5% droop 0PF Max. Input: 0.33 A OVER EXCITATION PROTECTION Set point 75 V dc Time delay 10-15 seconds (fixed) ENVIRONMENTAL Vibration: 20-100 Hz 50mm/sec 100Hz -2kHz 3.3g Operating temperature: -40 to +70o C (note 7) Relative Humidity: 0-70o C 95% (note 8) Storage temperature: -55 to +80o C Review: Material delivered sooner as expected delivery, excellent in quality. Review: Malo se reventó explotó ## Features - SENSING INPUT: Voltage Jumper selectable: 100-130 Vac 1 phase or 190-264 Vac 1 phase - FREQUENCY 50-60 Hz nominal - OUTPUT: Voltage 82 V d.c. @ 200 V a.c. - Current continuous 4A - Resistance 15 ohms min - REGULATION: +/- 1.0% - Generic replacement - 2 year warranty ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B01IDRW0MM | | Item model number | AS440 AVR | | Manufacturer | Thunder Parts | | Package Dimensions | 16.26 x 11.68 x 6.1 cm; 340.19 g | ## Images ![AS440 AVR - Automatic Voltage Regulator - Exact Generic Replacement - 2 Year Warranty! - Image 1](https://m.media-amazon.com/images/I/61HxCHybZ+L.jpg) ![AS440 AVR - Automatic Voltage Regulator - Exact Generic Replacement - 2 Year Warranty! - Image 2](https://m.media-amazon.com/images/I/71uDwpScznL.jpg) ![AS440 AVR - Automatic Voltage Regulator - Exact Generic Replacement - 2 Year Warranty! - Image 3](https://m.media-amazon.com/images/I/71BNil6DwtL.jpg) ![AS440 AVR - Automatic Voltage Regulator - Exact Generic Replacement - 2 Year Warranty! - Image 4](https://m.media-amazon.com/images/I/61S3EcBXZXL.jpg) ![AS440 AVR - Automatic Voltage Regulator - Exact Generic Replacement - 2 Year Warranty! - Image 5](https://m.media-amazon.com/images/I/810X98NAuSL.jpg) ## Questions & Answers **Q: is this genuine stamford or is it a replacement** A: Hi ChristopherThis is a generic reoplacement that carries a 1 year warranty. We also have the original available at our Amazon store.Ed **Q: Quiero saber si es buen producto y si lo recomiendan** A: Hasta el momento funciona a la perfección. Y salvo problemas de fabricación como cualquier producto electrónico es recomendable **Q: do you have a wiring diagram for converting from 350-28700 avr to the as440 avr?** A: If you are going to use the AS440, you won't be connecting P2,P3&P4, for the PMG. They will need to be safely isolated and taped off. 7 &8 are your voltage sensing wires, may also be labeled 2& 3, go on the terminals marked as such. The exciter wires are x and xx and go on the terminals marked as such. All the markings are on the back side of the regulator. Don't forget to set the jumpers for you correct Hz and pole arrangement. This is also shown on the paperwork sent with the regulator. **Q: My as 440 has a transformer on it, this one does not appear to. what is the diference?** A: First make certain it is the same model. Second,the transformer may have been replaced with other components. None of the replacement AS440 have a transformer. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Review *by M***S on 25 August 2019* Material delivered sooner as expected delivery, excellent in quality. ### ⭐ Review *by M***L on 18 April 2024* Malo se reventó explotó ### ⭐ Review *by Y***A on 18 July 2019* No funsiono vinos defectuosa .. la envie a Venezuela y perdí el dinero de la compra más el dinero del envió la tarjeta no sirve ## Frequently Bought Together - Thunder Parts | AS440 | Generic Replacement for Cummins AS440 Automatic Voltage Regulator | 2 Year Warranty - Thunder Parts SX460 AVR Generic Replacement for Cummins SX460 Automatic Voltage Regulator | 2 Year Warranty! - AVR SE350 Automatic Voltage Regulator Control Module for Generator Genset with 2 Year Warranty! --- ## 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.uk/products/657751978-as440-avr-automatic-voltage-regulator-exact-generic-replacement-2-year](https://www.desertcart.co.uk/products/657751978-as440-avr-automatic-voltage-regulator-exact-generic-replacement-2-year) --- *Product available on Desertcart United Kingdom* *Store origin: GB* *Last updated: 2026-05-17*