The AS540 is a sophisticated, 2-phase sensing, self-excited analogue AVR designed specifically for brushless diesel generators. It is the standard regulation component for the STAMFORD® S0 and S1 range, ensuring your alternator maintains a steady output voltage regardless of load changes.

Key Features

• Precision Regulation: Maintains voltage accuracy within $\pm$1.0%, protecting sensitive electronics from fluctuations.

• Enhanced Motor Starting: Supports an optional auxiliary winding to improve motor starting performance and sustain short-circuit currents.

• Under-Frequency Protection: Features a built-in Under-Frequency Roll-Off (UFRO) circuit with an LED indicator to prevent engine overload during speed drops.

• Durable Design: Built with high-quality electronic components and a rugged, vibration-resistant casing for long-term reliability in harsh environments.

• Universal Compatibility: A direct replacement for many Cummins and Stamford parts

Key Features

• Direct replacement for AS440 AVR

• 2-Phase sensing system for accurate voltage regulation

• Self-excited AVR design

• Built using Surface Mount Technology (SMT)

• Ensures stable generator voltage output

• Helps prevent over/under voltage conditions

• Durable design for diesel generator applications

• Easy installation and wiring compatibility

• Reliable performance for industrial and backup power generators

  Key Features

  • Direct replacement for AS440 AVR

  • 2-Phase sensing system for accurate voltage regulation

  • Self-excited AVR design

  • Built using Surface Mount Technology (SMT)

  • Ensures stable generator voltage output

  • Helps prevent over/under voltage conditions

  • Durable design for diesel generator applications

  • Easy installation and wiring compatibility

  • Reliable performance for industrial and backup power generators

    Key Features

    • Direct replacement for AS440 AVR

    • 2-Phase sensing system for accurate voltage regulation

    • Self-excited AVR design

    • Built using Surface Mount Technology (SMT)

    • Ensures stable generator voltage output

    • Helps prevent over/under voltage conditions

    • Durable design for diesel generator applications

    • Easy installation and wiring compatibility

    • Reliable performance for industrial and backup power generators

      Key Features

      • Direct replacement for AS440 AVR

      • 2-Phase sensing system for accurate voltage regulation

      • Self-excited AVR design

      • Built using Surface Mount Technology (SMT)

      • Ensures stable generator voltage output

      • Helps prevent over/under voltage conditions

      • Durable design for diesel generator applications

      • Easy installation and wiring compatibility

      • Reliable performance for industrial and backup power generators

Kit Contents

• High-performance diodes
• Surge suppressor components
• Heavy-duty connecting leads with terminals
• Mounting accessories (if applicable)