Simrad 000-12612-001 NMEA 2000 Micro-C Low Loss 4-Way Joiner

Simrad 000-12612-001 NMEA 2000 Micro-C Low Loss 4-Way Joiner

Part Number: 000-12612-001 (distributor SKU: 941-00012612001)
Brand: Simrad
Type: NMEA 2000 Micro-C low-loss 4-way joiner / T-joiner block
Connections: 4 x Micro-C NMEA 2000 device ports

Product Overview

The Simrad 000-12612-001 is a low-loss NMEA 2000 Micro-C 4-way joiner that connects up to four NMEA 2000 devices to the backbone at a single network point. It is a practical alternative to installing multiple individual T-connectors when several devices are located in the same area — such as at a helm station, engine bay, or electronics panel — resulting in a cleaner, more compact installation with fewer connection points.

• Four Micro-C NMEA 2000 device connection ports in one compact block
• Low-loss network design for reliable signal quality
• Standard NMEA 2000 Micro-C connector format
• Compatible with all NMEA 2000 Micro-C certified marine electronics
• Reduces the number of individual T-connectors needed when grouping nearby devices
• Weight: approx. 200 g

Compatible Applications

• Grouping multiple NMEA 2000 devices (chartplotters, fishfinders, VHF radios, engine interfaces, sensors) at a single helm or panel location
• Expanding an existing NMEA 2000 Micro-C backbone where several new devices need to be added at the same point
• New NMEA 2000 network builds using the Simrad 000-10760-001 NMEA 2000 Backbone Starter Kit or equivalent components
• Any NMEA 2000 Micro-C installation requiring a 4-device junction point

Network Note: The 4-way joiner is a device connection point, not a terminator or network power source. The NMEA 2000 backbone still requires one terminator at each physical end and a network power cable for correct operation. Confirm overall backbone topology before installation.

Part Number Reference

• Simrad: 000-12612-001
• Compact format: 00012612001
• Distributor SKU: 941-00012612001
• Related single T-connector: 000-0119-79
• Related backbone starter kit: Simrad 000-10760-001 NMEA 2000 Backbone Starter Kit – 15 ft

NMEA 2000 Network Overview

NMEA 2000 is a marine electronics communication standard used to connect navigation instruments, sensors, engine interfaces, and other onboard electronics on a shared network. The Micro-C connector format is the standard physical interface for NMEA 2000 components. Every NMEA 2000 backbone requires a power cable, a terminator at each end, and T-connectors or joiner blocks where devices connect to the backbone via short drop cables.

Installation Notes

• Connect the 4-way joiner into the backbone run at the device grouping location — the joiner replaces the equivalent number of individual T-connectors at that point
• Attach device drop cables to the four available Micro-C ports
• Ensure Micro-C connectors are fully seated and finger-tight before powering the network
• Verify that both ends of the backbone are still properly terminated after adding the joiner
• After powering up, confirm all connected devices appear on the network

Technical FAQ

Can I use the 4-way joiner as a backbone terminator? No — the joiner is a device connection point only. The backbone still requires a dedicated terminator at each physical end.

Does the 4-way joiner work with all NMEA 2000 devices? Yes — it uses the standard Micro-C connector format and is compatible with any NMEA 2000 certified device that uses Micro-C connections.

Can I daisy-chain multiple 4-way joiners? The joiner connects to the backbone as a device junction. For complex network layouts, follow NMEA 2000 topology guidelines and consult the installation documentation for your specific devices.

What is the difference between this and a standard T-connector? A standard T-connector provides one device connection point on the backbone. The 4-way joiner provides four device connection points at a single backbone location, reducing clutter and simplifying installations where multiple devices are grouped together.

Related Products

• Simrad 000-10760-001 NMEA 2000 Micro-C Backbone Starter Kit – 15 ft
• N2K-T-Rd T Connector
• Garmin 0101107800 NMEA 2000 T Connector
• Lowrance 000-0120-37 Yamaha Engine Interface Cable for NMEA 2000
• Raymarine Raystar RS150 External GPS/GNSS Sensor – NMEA 2000

Parts Desk Insights

The 000-12612-001 is the go-to solution when a customer is building or expanding a helm electronics cluster with multiple NMEA 2000 devices in close proximity. Rather than recommending individual T-connectors for every device, a single 4-way joiner keeps the installation compact and reduces potential connection failure points. The most common installation issue is unseated Micro-C connectors — ensure every connector is fully inserted and finger-tight before powering the network. Also remind customers that the joiner does not replace the backbone terminators; both backbone ends still need terminators regardless of how many joiners or T-connectors are on the backbone. If starting from scratch, bundle this with the Simrad 000-10760-001 Starter Kit which includes the backbone cable, terminators, and power cable.