Part No.: R221 (often miswritten as AR221) Leroy Somer Single Phase Automatic Voltage Regulator
Brand: Leroy Somer
Type: Single-phase dedicated AVR for brushless alternator
Sensing Input: 85–139 VAC, 50/60 Hz
Regulation Accuracy: ±0.5%
Max Excitation Output: 4 A DC
Adjustable Output Voltage: 90–130 VAC
Protection: Under-frequency protection
Response Time: ≤ 500 ms
Operating Temp.: -20℃ ~ +60℃
AR221 Specifications
| Part No | R221 (often miswritten as AR221) Leroy Somer Single Phase Automatic Voltage Regulator |
|---|---|
| Brand | Leroy Somer |
| Type | Single-phase dedicated AVR for brushless alternator |
| Sensing Input | 85–139 VAC, 50/60 Hz |
| Regulation Accuracy | ±0.5% |
| Max Excitation Output | 4 A DC |
| Adjustable Output Voltage | 90–130 VAC |
| Protection | Under-frequency protection |
| Response Time | ≤ 500 ms |
| Operating Temp | -20℃ ~ +60℃ |
About the AR221
The Leroy Somer AR221 is a generator（engine） used in industrial automation, control and power systems. It is rated at Part No R221 (often miswritten as AR221) Leroy Somer Single Phase Automatic Voltage Regulator, Brand Leroy Somer, Type Single-phase dedicated AVR for brushless alternator. Manufactured by Leroy Somer, this generator（engine） is supplied as new, original industrial-grade stock. Each unit is identified by manufacturer part number AR221 for accurate procurement and cross-referencing.
Why source the AR221 from HDE123
- Verified part number: every AR221 is checked against its manufacturer specification before shipment.
- 10 confirmed technical parameters available on this page for engineering review.
- Global delivery with clear lead time and commercial invoice for B2B buyers.
- Fast B2B support: send us the equipment model or an existing part number and our engineers confirm compatibility before you order.
Ordering the AR221
To order the Leroy Somer AR221, add it to your cart and complete checkout, or use the Request a Quote form for volume purchases and replacement / cross-reference enquiries. Lead time: typically 3–10 working days for in-stock items, subject to confirmation. Worldwide shipping is available and a commercial invoice is provided for customs.