Marelli AVR M31FA601A – Automatic Voltage Regulator

The Marelli M31FA601A is a high-quality Automatic Voltage Regulator (AVR) designed for precise and stable voltage control in Marelli Motori alternators. It automatically adjusts the excitation current to maintain consistent generator output, ensuring reliable performance under changing load and operating conditions. Built with robust electronic components and advanced protective features, the M31FA601A delivers long-term durability and dependable operation in industrial and commercial generator systems.

Key Specifications:

• Voltage Regulation: ±1% steady-state accuracy

• Input Supply: 50/60 Hz, 190–480 V AC sensing

• Output Current: Up to 6 A continuous

• Excitation System: Compatible with SHUNT, AREP, or PMG excitation

• Protection: Over-excitation, under-frequency, and thermal protection

• Design: Compact, durable, and easy to install

• Compatibility: Suitable for Marelli Motori MJB, MXB, and equivalent alternator models