Overview

The BASLER BE350 Automatic Voltage Regulator (AVR) represents a breakthrough in generator control technology, offering a cost-effective analog solution that maintains the exceptional quality standards Basler Electric is known for worldwide. Engineered as a direct replacement for the Marathon Electric SE350, the BE350 delivers precise voltage regulation for industrial, commercial, and standby generator applications. This advanced AVR continuously monitors generator output voltage and automatically adjusts the excitation current to the alternator field windings, ensuring stable, clean power regardless of load changes or input voltage fluctuations. Whether you're operating critical backup power systems, prime power generators, or mobile power units, the BE350 provides the reliability and performance your applications demand while significantly reducing your replacement parts budget.

Basler Electric developed the BE350 specifically to provide generator owners and operators with a commercially priced alternative without sacrificing the robust performance characteristics that define professional-grade voltage regulation equipment. This analog regulator incorporates proven circuit design, high-quality components, and comprehensive protection features including over-excitation limiting, under-frequency roll-off, and voltage build-up circuitry. The BE350 is a complete 100% side-by-side replacement for the SE350 at approximately half the cost, making it an intelligent choice for maintenance teams, OEM equipment manufacturers, rental fleet operators, and end users who require dependable voltage regulation without the premium price tag. With its compact form factor, straightforward installation process, and wide compatibility across numerous alternator platforms, the BE350 has quickly become a preferred solution for generator voltage control applications across multiple industries.

Key Specifications

Compatible Alternator Models

The Basler BE350 AVR is engineered for broad compatibility across multiple alternator brands and generator configurations, making it a versatile solution for replacement and original equipment applications. This voltage regulator is specifically designed to work with Marathon Electric alternators that originally utilized the SE350 AVR, as well as numerous Basler-compatible generator systems in the 50-350 kW power range. Compatible alternator series include Marathon 400, Marathon 500, and Marathon 600 series alternators, as well as select models from Stamford, Mecc Alte, and Leroy Somer alternators configured for shunt or PMG (Permanent Magnet Generator) excitation systems. The BE350 has been successfully deployed in applications ranging from emergency backup generators in hospitals and data centers to prime power units in remote industrial sites and mobile generator sets used in construction and events. Before ordering, we recommend verifying your specific alternator model number and existing AVR configuration to ensure proper compatibility. Our technical support team at 1-888-769-3758 is available to assist with cross-reference verification and provide application-specific guidance for your generator system.

Why Buy from General Power

When you purchase your Basler BE350 AVR from General Power, you're partnering with an authorized dealer committed to providing genuine OEM parts, expert technical support, and exceptional customer service. We maintain extensive inventory of Basler Electric voltage regulators and generator control components, enabling same-day shipping on most orders placed before our daily cutoff time. Every BE350 we sell is a 100% genuine OEM product sourced directly from authorized distribution channels, complete with manufacturer warranties and full technical documentation. Our knowledgeable team includes bilingual support specialists who can assist you in English or Spanish, ensuring clear communication throughout your purchasing experience. Whether you need help identifying the correct replacement AVR, require installation guidance, or have questions about compatibility with your specific generator model, our experienced staff is ready to help. We understand that generator downtime costs money and disrupts operations, which is why we've built our business around fast delivery, accurate order fulfillment, and responsive customer support. Call us today at 1-888-769-3758 to speak with a generator parts specialist who can answer your questions, verify compatibility, and expedite your order to minimize downtime and get your generator system back to optimal performance.

Installation Overview

Installing the Basler BE350 Automatic Voltage Regulator is a straightforward process for qualified electricians and generator technicians, though all work should be performed with the generator completely shut down and following proper lockout/tagout safety procedures. Here's a general overview of the installation process:

• Step 1: Safety and Preparation – Completely shut down the generator and disconnect all power sources. Allow adequate cooling time for hot components. Photograph or carefully document all existing wire connections on your current AVR before disconnecting anything. Verify that you have the correct replacement AVR model and consult the installation manual provided with your BE350 unit.
• Step 2: Remove Existing AVR – Carefully disconnect all wire terminals from the old voltage regulator, labeling each wire as you remove it to ensure correct reconnection. Remove any mounting screws or brackets securing the old AVR to the control panel or generator frame. Extract the failed AVR unit and inspect all wire connections for signs of damage, corrosion, or overheating that may have contributed to the failure.
• Step 3: Install BE350 AVR – Position the new Basler BE350 in the same mounting location as the original AVR. Secure it using appropriate mounting hardware. Reconnect all wires according to your documentation and the wiring diagram provided with the BE350, ensuring tight, secure connections at each terminal. Double-check that all connections match the terminal designations (sensing inputs, excitation outputs, power supply connections).
• Step 4: Testing and Calibration – After verifying all connections are correct and secure, restore power to the generator system and perform a no-load startup. Monitor the voltage output and verify stable regulation. Adjust the voltage trim potentiometer if necessary to achieve the desired output voltage. Gradually apply load to the generator while monitoring voltage stability and AVR operation. Confirm proper operation under various load conditions before returning the unit to service.

Important: This is a general installation overview only. Always consult the official Basler BE350 installation manual and follow all manufacturer guidelines. If you're not qualified to perform electrical work on generator systems, contact a licensed electrician or certified generator technician. Improper installation can result in equipment damage, unsafe operating conditions, or personal injury.

Frequently Asked Questions

Q: What does the Basler BE350 AVR do?
A: The BE350 Automatic Voltage Regulator continuously monitors your generator's output voltage and automatically adjusts the excitation current supplied to the alternator's field windings. This precise control maintains stable output voltage regardless of changes in load demand or engine speed, protecting your connected equipment from potentially damaging voltage fluctuations. The AVR is essential for delivering clean, consistent power suitable for sensitive electronics, motors, and other electrical loads.

Q: How do I know if my AVR is failing or needs replacement?
A: Common symptoms of a failing voltage regulator include unstable or fluctuating output voltage, unusually high or low voltage readings that don't respond to adjustment, generators that fail to build voltage on startup, or complete loss of power output despite the engine running normally. You might also notice that voltage drops significantly when loads are applied or that the generator cannot maintain voltage under load. If you're experiencing any of these issues, the AVR should be tested and likely replaced. Our technical team at 1-888-769-3758 can help you diagnose AVR-related problems.

Q: Is the BE350 a genuine OEM Basler Electric product?
A: Yes, absolutely. The BE350 is manufactured by Basler Electric, a globally recognized leader in power control and protection systems with decades of industry experience. This is not an aftermarket imitation or third-party copy—it is a genuine OEM product designed, engineered, and produced by Basler Electric to their exacting quality standards. When you purchase from General Power, you receive authentic Basler products complete with manufacturer documentation and warranty coverage.

Q: What warranty coverage is included with the BE350 AVR?
A: The Basler BE350 includes manufacturer warranty protection against defects in materials and workmanship. Specific warranty terms and duration are outlined in the documentation included with your AVR. Warranty coverage typically requires proper installation according to manufacturer specifications and use within rated parameters. For detailed warranty information specific to your purchase, contact our customer service team at 1-888-769-3758, and we'll be happy to explain the coverage and help with any warranty-related questions or claims.

Q: Can I get technical support for installation or troubleshooting?
A: Absolutely. General Power provides comprehensive technical support for all the products we sell, including the Basler BE350 AVR. Our knowledgeable staff can assist with compatibility verification, installation questions, wiring diagrams, troubleshooting guidance, and general application support. We offer bilingual assistance in English and Spanish. You can reach our technical support team at 1-888-769-3758 during business hours, and we'll connect you with a specialist who can help resolve your technical questions and ensure successful installation and operation of your voltage regulator.

Order Today

Don't let a failed voltage regulator keep your generator offline and your operations at a standstill. The Basler BE350 AVR delivers professional-grade voltage regulation performance at a competitive price point, providing the perfect balance of quality and value for your generator system. Whether you're replacing a failed SE350 or upgrading your existing voltage control system, the BE350 offers proven reliability backed by Basler Electric's reputation for excellence. At General Power, we make ordering fast and simple—our extensive inventory ensures product availability, our same-day shipping commitment gets your parts moving quickly, and our experienced team provides the expert support you need for a successful installation. Order your BE350 Basler Automatic Voltage Regulator today by calling 1-888-769-3758 or placing your order through our website. Our bilingual customer service specialists are standing by to verify compatibility, answer your questions, and process your order immediately. Trust General Power for genuine OEM generator parts, competitive pricing, fast shipping, and the technical expertise that keeps your power systems running at peak performance.