INTRODUCTION
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The Oceanic Systems NMEA2000® 3420 AC Monitor is designed to monitor any AC source
including single-phase (phase A), single-phase (phase A,B), and three-phase (phase A,B,C)
This unit is designed to operate in a protected marine environment such as an engine room. It is
very important that it is installed and set up correctly according to this manual. Please read and
follow the installation and setup instructions carefully to achieve the best results.
1.2 PRODUCT FEATURES
The NMEA2000® 3420 AC Monitor has the following features:
● Inputs from AC voltage (Max 280 VAC), 200 Amp AC Current
Transformer
● User Settable Device Instance using rotary switches
● User Settable Circuit Type
● Heartbeat blue LED confirming NMEA transmission.
● NMEA2000® micro C interface plug
● Panel or DIN rail mounting option
● The unit reports AC Voltage, Current, Power, Frequency.
