Sierra PC51030 NMEA 2000 Micro-C Extension Cable | 12 ft

Sierra PC51030 NMEA 2000 Micro-C Extension Cable — 12 ft

The Sierra PC51030 is a 12 ft Micro-C extension cable designed to extend an NMEA 2000 network backbone across larger vessels or complex routing paths. NMEA 2000 is the marine industry standard data network that allows compatible electronics — chartplotters, GPS sensors, depth sounders, engine monitors, VHF radios, and more — to share data over a single cable network. At 12 ft, this is the longest backbone extension cable in the Sierra NMEA 2000 range, suited to larger powerboats and sailboats where the backbone must span a significant distance or route through multiple compartments. Gold-plated copper alloy terminals, 18AWG conductors, and an IPX7-rated waterproof connection ensure reliable, low-loss signal transmission throughout. Fully interchangeable with other NMEA 2000 certified products.

Key Features

• 12 ft Micro-C extension cable — the longest backbone extension in the Sierra NMEA 2000 range
• Fully interchangeable with other NMEA 2000 certified products
• Gold-plated copper alloy terminals for superior conductivity and corrosion resistance
• 18AWG conductors — minimizes voltage drop between connections
• IPX7-rated waterproof connections — reliable in wet and spray environments
• Premium metal connection collars for a tight, secure fit
• Compliant with NMEA 2000 serial data communication network standards

Compatible Applications

• Extending NMEA 2000 backbone runs across larger powerboats and sailboats
• Routing the backbone through multiple compartments, bulkheads, or along a keel run
• Connecting chartplotters, GPS sensors, depth sounders, and engine monitors on vessels with widely spaced electronics
• Any NMEA 2000 Micro-C network installation requiring a long certified extension cable

Parts Desk Insights

The PC51030 is the go-to extension when a customer is building or extending a backbone on a larger vessel and needs to cover significant distance in a single cable run. It’s particularly useful for routing from a helm station to a mid-ship or stern electronics location without chaining multiple shorter cables. If 12 ft is more than needed, the Sierra PC51020 (6 ft), Sierra PC51010 (3 ft), and Sierra PC51000 (2 ft) cover shorter runs. For connecting individual devices off the backbone rather than extending it, the drop cables — Sierra PC51140 (2 ft Drop), Sierra PC51160 (6 ft Drop), and Sierra PC51170 (16 ft Drop) — are the correct cable type. To power the network, the Sierra PC51070 Power T Cable is also available. Browse our full NMEA 2000 range in the Switches & Circuit Protection collection.