Leroy Somer R120 Automatic Voltage Regulator - Original OEM AVR

The Leroy Somer R120 AVR is a premium automatic voltage regulator designed and manufactured by Leroy Somer in France, representing the gold standard in generator voltage regulation technology. This genuine OEM voltage regulator delivers precise voltage control for a wide range of Leroy Somer alternators, ensuring stable power output and protecting your generator investment. The R120 voltage regulator is engineered to maintain consistent voltage levels regardless of load variations, temperature changes, or speed fluctuations, making it the ideal choice for both standby and prime power applications. When you need reliable voltage regulation for your Leroy Somer alternator, the R120 AVR provides the performance and durability that professional technicians and generator operators demand.

At General Power, we stock authentic Leroy Somer R120 voltage regulators, not aftermarket imitations. Each R120 AVR we sell is an original factory part, guaranteed to meet the exact specifications and quality standards set by Leroy Somer. Whether you're performing preventative maintenance, troubleshooting voltage fluctuations, or replacing a failed AVR, the R120 delivers the reliability your power generation system requires.

Technical Specifications - R120 Voltage Regulator

Compatible Leroy Somer Alternator Models

The R120 automatic voltage regulator is specifically designed for use with the following Leroy Somer alternator series and models. Verify your alternator model number before ordering to ensure proper compatibility:

• TAL040 Series: TAL040 B, TAL040 C, TAL040 C1, TAL040 D, TAL040 E, TAL040 F
• TAL042 Series: TAL042 A, TAL042 B, TAL042 C, TAL042 D, TAL042 E
• TAL044 Series: TAL044 A, TAL044 B, TAL044 C, TAL044 D
• TAL046 Series: TAL046 A, TAL046 B, TAL046 C, TAL046 D
• TAL048 Series: TAL048 A, TAL048 B, TAL048 C

This R120 AVR is the correct replacement voltage regulator for numerous generator configurations using these Leroy Somer alternators. The alternator data plate on your unit will display the exact model number. If you're unsure about compatibility with your specific alternator, our technical support team at General Power is ready to assist you in confirming the correct AVR for your application.

Key Features and Benefits of the R120 AVR

• Precise Voltage Regulation: Maintains stable output voltage within tight tolerances regardless of load changes
• Fast Response Time: Quickly compensates for voltage fluctuations to protect sensitive equipment
• Temperature Compensated: Adjusts for ambient temperature variations to ensure consistent performance
• Overload Protection: Built-in protective features safeguard the AVR and alternator from damage
• Compact Design: Space-efficient mounting configuration for easy installation
• High Reliability: Proven Leroy Somer engineering for long service life
• Simple Connection: Straightforward wiring harness integration with compatible alternators
• Wide Operating Range: Performs reliably across various environmental conditions

Installation Overview - R120 Voltage Regulator

Installing the Leroy Somer R120 voltage regulator requires basic electrical knowledge and proper safety procedures. Always disconnect all power sources before beginning installation work on your generator. The R120 AVR typically mounts directly to the alternator housing using the existing mounting bracket and hardware.

Basic Installation Steps:

• Shut down the generator and disconnect the battery or power source
• Remove the protective covers to access the existing AVR location
• Disconnect the wiring harness from the old voltage regulator, noting wire positions
• Remove mounting screws and extract the old R120 AVR (if replacing)
• Position the new R120 voltage regulator in the mounting bracket
• Secure with appropriate mounting hardware to ensure firm contact
• Reconnect the wiring harness according to the alternator wiring diagram
• Verify all connections are tight and properly seated
• Replace protective covers and restore power
• Start the generator and verify proper voltage output with a multimeter
• Adjust voltage settings if necessary using the AVR potentiometer

For detailed installation instructions specific to your alternator model, consult the technical manual provided with your Leroy Somer alternator. Professional installation by a qualified generator technician is recommended to ensure optimal performance and maintain warranty coverage. Improper installation can result in equipment damage or unsafe operating conditions.

Why Purchase Your R120 AVR from General Power?

When you order the Leroy Somer R120 voltage regulator from General Power, you're partnering with an authorized dealer committed to providing genuine OEM parts and exceptional customer service. We understand that generator downtime costs money, which is why we maintain extensive inventory and offer same-day shipping on in-stock items when you order before our cutoff time.

General Power Advantages:

• Authorized Dealer: We source directly from Leroy Somer and authorized distributors
• Genuine OEM Parts: Every R120 AVR is an authentic Leroy Somer product, never aftermarket
• Expert Support: Our technical team can help verify compatibility and answer questions
• Fast Shipping: Same-day dispatch available for in-stock items
• Competitive Pricing: Fair pricing on genuine parts without compromising quality
• Quality Guarantee: All parts backed by manufacturer warranty
• Large Inventory: Extensive stock of generator parts and AVRs
• Secure Ordering: Safe, encrypted online ordering system

We've been serving the power generation industry for years, building our reputation on reliability, authenticity, and customer satisfaction. When you need a replacement R120 voltage regulator, trust General Power to deliver the genuine article quickly and affordably.

Frequently Asked Questions - Leroy Somer R120 AVR

Q: How do I know if my R120 voltage regulator needs replacement?

A: Common symptoms of AVR failure include unstable voltage output, voltage readings significantly higher or lower than rated output, failure to build voltage when the generator starts, or visible damage to the regulator such as burned components or loose connections. If your generator exhibits voltage fluctuations under load or won't produce power despite the engine running properly, the R120 AVR may need replacement. Always test with a multimeter and inspect wiring connections before replacing the voltage regulator.

Q: Is this R120 an original Leroy Somer part or an aftermarket replacement?

A: The R120 voltage regulator sold by General Power is a 100% genuine, original Leroy Somer product manufactured in France. We do not sell aftermarket copies or remanufactured units. Each R120 AVR comes in original Leroy Somer packaging and includes the manufacturer's warranty. Genuine OEM parts ensure proper fit, reliable performance, and compatibility with your Leroy Somer alternator.

Q: Can I install the R120 AVR myself, or do I need a professional technician?

A: While the R120 installation process is straightforward for those with electrical experience, we recommend professional installation by a qualified generator technician. Working with generator electrical systems requires proper safety procedures, knowledge of wiring configurations, and the ability to test and adjust voltage output. Improper installation can damage the AVR, alternator, or connected equipment. If you have electrical experience and follow proper safety protocols, self-installation is possible with the alternator's technical manual.

Q: How long does the R120 voltage regulator typically last?

A: The service life of an R120 AVR depends on operating conditions, maintenance practices, and environmental factors. Under normal operating conditions with proper maintenance, a Leroy Somer R120 voltage regulator can provide many years of reliable service. Factors that affect lifespan include operating temperature, humidity, voltage spikes, load cycling, and overall generator maintenance. Regular inspections and keeping connections clean and tight will maximize the service life of your voltage regulator.

Q: What is your return policy if the R120 doesn't fit my alternator?

A: General Power stands behind every sale with a customer-friendly return policy. If you receive an R120 AVR that is not compatible with your alternator due to ordering the wrong part, we accept returns of unused, unopened items in original packaging within our specified return window. Before ordering, we encourage you to verify your alternator model number or contact our technical support team to confirm compatibility. This ensures you receive the correct voltage regulator for your specific application and avoids unnecessary returns or delays.

Order Your Genuine Leroy Somer R120 AVR Today

Don't let a failed voltage regulator keep your generator offline. The Leroy Somer R120 automatic voltage regulator is in stock at General Power and ready to ship. With our same-day shipping on orders placed before our cutoff time, you can minimize downtime and get your power generation system back to full operation quickly. Every R120 AVR we sell is a genuine Leroy Somer product backed by manufacturer warranty and our commitment to customer satisfaction.

Order your R120 voltage regulator now through our secure online ordering system, or contact our knowledgeable sales team if you have questions about compatibility or installation. At General Power, we're your trusted source for authentic Leroy Somer parts, competitive pricing, and the expertise you need to keep your generator running at peak performance. Add the R120 AVR to your cart today and experience the General Power difference!