Regular price $641.74 $0.00

Actisense NMEA 0183 Buffer

Shipping calculated at checkout.

The NBF-3 NMEA Buffer isolates and buffers NMEA 0183 data, with the power to drive multiple devices. Able to distribute up to six identical, amplified streams of data from one source. The NMEA signals are buffered to ensure that each Listener receives the data at the required voltage levels, providing consistent data quality.


  • One OPTO-isolated input Six ISO-DriveTM outputs
  • Compatible with RS422, RS232 and RS485 connections
  • Pluggable screw terminals
  • Power and input indicator LEDs
  • Power feed (500 mA) for single cable installations to the NMEA Talker
  • Optional DIN rail mount Up to 115200 baud
  • Outputs automatically track the input baud rate
  • Protocol independent


  • AIS compatible
  • Protects connected devices
  • Simple installation

Power Supply

Input Supply Voltage

10 to 35V DC

Input Supply Current (NBF-3 only)

100mA max @ 12V DC (all outputs @ full drive into 100Ω loads)

Input Supply Connector

Pluggable 2 way screw terminal, 3.5mm pitch

Input Protection (NBF-3 only)

Continuous reverse polarity and ESD protection

Power Indicator

LED, blue (lit constantly indicates correct operation when input supply connected)

Listener Power Output Voltage

10 to 35V DC derived directly from the input supply voltage

Listener Power Output Current

500mA max @ <= 30°C (see note)* (PTC self-resettable fuse)

Listener Power Output Connector


Pluggable 2 way screw terminal, 3.5mm pitch


NMEA 0183 Port - Listener & Talkers

Number of Listener / Input Ports

One isolated NMEA 0183 Listener

Number of Talker / Output Ports

Six isolated NMEA 0183 Talkers


Fully NMEA 0183, RS422 & RS232 compatible. RS485 Listener compatible

Galvanic Isolation

2500V input to ground 1500V output to ground using ISO-Drive

Speed / Baud Rate

4800 to 115200 bps

Talker Output Voltage Drive

>= 2.1V (differential) into 100Ω

Talker Output Current Drive

20mA max.

Talker Output Protection

Short circuit and ESD

Listener Input Voltage Tolerance

-15V to +15V continuous, -35V to +35V short term (<1 second)

Listener Input Protection

Current limited, overdrive protection to 40V DC and ESD protection

Listener Data Indicator

LED, green (flashes at data rate)



Pluggable 2-way screw terminals, 3.5mm pitch


Approvals and Certifications


EN 60945 (sections 9 & 10)

Environmental Protection


Operating Temperature

-20°C to +70°C

Storage Temperature


-40°C to +85°C



Housing Material


Protective Lid Material


Sealing Materials

Expanded silicone foam gasket, closed cell polyurethane splash guard and ePTFE waterproof vent


127mm (L) x 106mm (W) x 48mm (H)




4 x 3.5mm lugs to allow panel mount with self tapping screws (included), optional DIN rail mount available on request.


Click on 'Search Now' to find your nearest FURUNO ENL Dealer or contact us
Phone: +64 9 373 5595 | Email: enquiries@enl.co.nz

Search Now