Maretron ACM100 Alternating Current (AC) Monitor – ACM100-01

The Maretron ACM100 AC Monitor (ACM100-01) brings powerful alternating current power monitoring to your boat’s NMEA 2000® network, giving you real-time insight into your vessel’s shore power, generator output, and onboard AC systems. Designed for seamless integration with Maretron displays and software like N2KView®, the ACM100 turns critical AC electrical metrics into network data that can be viewed anywhere on the vessel with compatible NMEA 2000® interfaces. 

Whether you’re managing a generator, monitoring utility power, or tracking multiple AC busses on a large yacht, this monitor provides comprehensive electrical data — not just basic voltage and frequency — to help you diagnose power issues, optimize system performance, and protect your electronics from unexpected power anomalies. 

Benefits

• Comprehensive AC power visibility — go beyond basic voltage and frequency with advanced power metrics

• Improved diagnostics and safety — detect power anomalies early to protect sensitive electronics

• Network-wide data access — share AC information across your NMEA 2000® network

• Flexible monitoring — suitable for single-phase, split-phase, and three-phase systems when configured correctly 

Typical Applications

• Monitoring shore power quality and usage

• Generator output monitoring

• Tracking AC loads and energy consumption

• Integrating AC system data into a unified vessel monitoring display

• Power system dashboards on bridge displays and remote stations

Summary for the User

The ACM100 is a professional-grade solution for anyone who wants to eliminate the guesswork of AC power management. It is particularly valuable for protecting your boat from brownouts or overloaded circuits when multiple high-draw appliances (like AC units and water heaters) are running simultaneously.

Installation Tip: For the most accurate monitoring, the Current Transformer (CT) should be installed on the main AC feed immediately after the shore power inlet or generator breaker.