Maretron NMEA 2000 Network Bus Extender
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Maretron NMEA 2000 Network Bus Extender
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Maretron NMEA 2000 Network Bus Extender
Maretron's NBE100 NMEA 2000 Network Bus Extender offers seamless scalability and reliability tailored for expanding NMEA 2000 networks. This essential device allows you to efficiently exceed standard node and trunk length limitations, making it perfect for large marine applications.
Key Features:
- Segments Large Networks: Easily split a single NMEA 2000 network into two smaller electrical segments, allowing for a total of 100 nodes.
- Extended Limitations: Overcome the typical constraints of 50 nodes, 200m trunk length, and 78m cumulative drop length.
- Advanced Message Routing: Ensures that higher-priority messages are transmitted first, thereby enhancing network reliability.
- Optical Isolation: Increases signal integrity, which is crucial for maintaining a robust network connection.
Ideal for marine technicians and boat enthusiasts, the NBE100 is backed by Maretron's commitment to quality and performance, ensuring your network operates smoothly and efficiently. Upgrade your NMEA 2000 setup today!

Part #: NBE100-01
Maretron's NBE100 (Network Bus Extender) allows you to extend the maximum node count, network trunk length and cumulative drop length of any NMEA 2000 network. The NBE100 solves bus errors and other electrical issues caused by exceeding any of these limitations and makes design of large networks easier. NMEA 2000 networks have a maximum of 50 nodes allowed on a single network, a maximum network trunk length of 200m and a maximum cumulative drop length of 78m. If you have a network that exceeds any of these specifications, you can simply disconnect the network trunk in the middle and connect the ends to the NBE100, along with additional termination resistors. This will split the network into two electrical segments, each of which can have up to 50 nodes, for a total of 100 nodes on the logical network. The NBE100 will transparently route NMEA 2000 messages between the two network segments, making them work as a single logical NMEA 2000 network. Advanced priority-based message routing ensures that higher-priority messages are always prioritized over lower-priority messages, enabling predictable and reliable network operation.
Features:
- Segments a single large NMEA 2000 network into two smaller electrical segments
- Allows you to exceed the 50 node limitation on a NMEA 2000 network
- Allows you to exceed the 200m trunk length limitation on a NMEA 2000 network
- Allows you to exceed the 78m cumulative drop length limitation on a NMEA 2000 network
- Allows all NMEA 2000 devices to operate as if they were still on a single NMEA 2000 network
- Priority-based message routing ensures higher-priority messages get through the bus extender first
- Optically isolates network segments, increasing signal integrity and network reliability
WARNING: This product can expose you to chemicals which are known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to P65Warnings.ca.gov.
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Shipping Rates
- Orders under $150: Flat shipping rate of $15
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Order Processing
- Orders placed before 12:00 PM ET (Monday–Friday): Processed the same business day
- Orders placed after 12:00 PM ET or on weekends/holidays: Processed the next business day
Delivery Time
All orders are delivered within 3–7 business days from the date of shipment, depending on your location.
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How long does it take to process an order?
All orders are processed the same business day if placed before 12 PM EST. Orders placed after 12 PM EST are processed the following business day.
Do you ship internationally?
No! Currently we are only supporting shipments to contiguous United States. We do not ship to PO Boxes or Internationally.
What is your return policy?
No Returns
Due to the nature of our products and our commitment to ensuring the highest quality standards, we do not accept any returns under any circumstances.
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- Change of mind
- Incorrect size or style ordered
- Delayed shipping
- Product dissatisfaction
Please refer to our Refund Policy
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