Maretron ACM100 Alternating Current Monitor

The Maretron ACM100 Alternating Current Monitor for sale delivers precise AC electrical system diagnostics for vessels relying on genset power or shore power connectivity. Designed for marine operators and technicians who need real-time visibility into AC circuit performance, this instrument eliminates guesswork when troubleshooting electrical faults, imbalances, or inefficiencies aboard ships, yachts, and commercial fishing vessels. AC monitoring is essential in modern marine environments where multiple loads—from galley equipment to HVAC systems—depend on stable, balanced power delivery.

This monitor integrates seamlessly into Maretron's N2K (NMEA 2000) backbone network architecture, allowing vessel operators to display AC voltage, frequency, current draw, and phase relationships directly on compatible chartplotters or multifunction displays. The ACM100 samples alternating current parameters across all three phases (where applicable), detecting ground faults, phase imbalances, and frequency drift that could indicate generator stress or supply instability. Its compact form factor—weighing just 1.6 lbs and measuring 7 × 5 × 10 inches—fits easily into engine rooms or electrical cabins without consuming valuable deck space.

Installation works best on vessels with existing N2K networks or those upgrading their marine electrical monitoring infrastructure. Commercial operators, liveaboards, and cruising yachtsmen benefit most from continuous AC diagnostics, as early detection of voltage sags, harmonic distortion, or load imbalances prevents equipment damage and reduces unexpected downtime. Compatible with all Maretron-certified N2K displays and third-party instruments supporting the NMEA 2000 standard, the ACM100 becomes the trusted reference point for electrical system health and operational safety at sea.