Maretron CM-CF-4 NMEA 2000 4-Port Multiport Box

Maretron NMEA 2000 4-Port Multiport Box (CM-CF-4)

The Maretron CM-CF-4 is a marine-grade 4-Port NMEA 2000 Junction Box engineered to consolidate up to four device drop lines into a single homerun connection back to the network trunk line. Ideal for high-density instrument areas like helm consoles, flybridge stations, or navigation desks, it replaces complex clusters of individual T-connectors with a clean, centralized distribution hub.

Constructed with a rugged blue-gray nylon housing, gold-plated brass contacts, and nickel-plated coupling threads, the CM-CF-4 features one Micro/Mid male connector for the homerun trunk line link and four Micro/Mid female ports for individual device drop cables. When mated with standard drop cables and unused-port protective caps, the assembly delivers an IP67 waterproof rating suitable for harsh, high-vibration marine environments.

Key Features

• Consolidates 4 Drop Lines: Replaces daisy-chained or clustered T-connectors with a single compact distribution point.

• Reduces Helm Clutter: Streamlines cabling behind tight instrument panels, dashboard consoles, and equipment bays.

• Gold-Plated Brass Contacts: Prevents corrosion and provides low-resistance CAN-bus signal transmission.

• IP67 Sealed Housing: Submersible, dust-tight construction with rubber-gland port sealing when fully mated or capped.

• Standardized Micro/Mid Connectivity: Fully compatible with standard NMEA 2000 Micro and Mid cabling systems.

(Ideal for consolidating many connections; for example behind dashboards)

(NOTE: Requires the purchase of an additional double-ended cord set for connection back to the trunk)