Leroy Somer R449 Automatic Voltage Regulator
The Leroy Somer R449 Automatic Voltage Regulator (AVR) is a highly reliable and robust control unit engineered specifically for synchronous alternators. Manufactured in France, this authentic Leroy Somer component ensures optimal power generation and system stability for your industrial applications. It is equipped with precise, user-adjustable controls for output voltage (VOLT), stability (STAB), and maximum excitation current (EXC.MAX), allowing for fine-tuned performance. Furthermore, the R449 utilizes 3-phase voltage sensing (3 Ph.) for highly accurate regulation and integrates a built-in soft-start function. This critical feature safely limits inrush current during generator startup, effectively protecting your equipment and extending the operational lifespan of your alternator.
Technical Specifications:
- Brand: Leroy Somer
- Model: R449
- Sensing Input: 3-Phase (3 Ph.)
- Adjustable Controls: Voltage (VOLT), Stability (STAB), Maximum Excitation Current (EXC.MAX)
- Special Features: Built-in Soft-Start function to limit startup inrush current
- Country of Origin: Made in France

| Brand | Leroy Somer |
|---|---|
| Model | R449 |
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ENERAL DELIVERY INFORMATION
Orders will be processed and shipping during standard working hours (0830 – 1700 GMT+8) Monday to Friday (excluding Bank Holidays)
On rare occasions, your order may be handled and/or processed on a Saturday. However, we are unable to ship items on weekends, therefore any orders dealt with on the weekend will be send out the next following working day.
The cut-off point for orders to be shipped the same day is 14:00 – please contact us to confirm stock levels before placing your order
Any orders placed after the cut-off will ship the next working day assuming all parts are in stock and ready for dispatch.
All orders:
- must be paid for in full before any goods are dispatched
- require a signature upon delivery. Please ensure delivery can be made to an address where someone will be available to sign for the delivery
- are packaged with great care, ensuring your order and the contents it contains, makes it safely through the delivery network
Leroy Somer R449 Automatic Voltage Regulator
Optimize your synchronous alternator’s performance with the genuine Leroy Somer R449 AVR. Manufactured in France, this premium automatic voltage regulator features precise 3-phase sensing, a protective soft-start function, and fully adjustable voltage and stability controls for reliable, industrial-grade power generation.

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