SPN2K-12BA NMEA 2000 Surge Protector for Marine Electronics | Backbone Power & Data Protection
$299.00
SPN2K-12BA is a 12VDC NMEA 2000 surge protector designed to help protect marine electronics and backbone cabling from lightning-related surges, voltage spikes, and onboard electrical transients. It provides protection for both power and data bus lines, installs inline in the NMEA 2000 backbone or drop cable, and is ideal for autopilots, chart plotters, VHF radios, displays, and other sensitive boat electronics.
SPN2K-12BA is a marine NMEA 2000 surge protector built to help protect 12VDC backbone networks and connected electronics from damaging surges, induced voltage, and electrical spikes. Designed for both power and data line protection, this inline backbone surge protector helps reduce the risk of damage to critical marine equipment such as autopilots, chart plotters, VHF radios, displays, sensors, and other NMEA 2000 devices.
This NMEA 2000 backbone surge protector installs directly into the network backbone as a pass-through device using male and female connectors. It can also be installed on a drop cable for additional point-of-use protection. Your current page states it is recommended for backbone runs every 20 feet, which is a strong use-case detail worth keeping because it supports both installation clarity and search relevance.
Key features of the SPN2K-12BA include:
Protection for both NMEA 2000 power and data bus lines
12VDC operation with up to 5A continuous current
7kA surge current rating
Fast response time as low as 3 nanoseconds
Multi-stage surge protection design
Marine-grade weatherproof ABS enclosure
Simple plug-and-play inline installation
Suitable for backbone or optional drop cable installation
Product Details
| Weight | 10 oz |
|---|---|
| Dimensions | 4.25 × 3.85 × 1.35 in |
| Application | Marine |
| Connection Type | NMEA 2000 |
| Continuous Current Rating | 5 |
| Environmental Rating | Indoor, Marine |
| Surge Current Rating (A) | 7kA |
| Voltage (Vdc) | 12 |
| Type of Electrical Current | DC |
Specifications
Review the product details and product description for voltage, surge current rating, connection type, enclosure rating, wiring details, certifications, and other technical information.
For detailed product-specific ratings, refer to the specifications listed on this product page and any available product documentation.
Installation
Installation should be performed by a qualified electrician, licensed contractor, or qualified installer in accordance with the product instructions, applicable electrical codes, and local requirements.
Always disconnect power before installation and verify the product is suitable for the electrical system where it will be installed.
Warranty
Bad Wolf surge protection devices include a 5-year product warranty.
Eligible products may also include connected equipment warranty coverage when properly installed and registered according to the warranty terms.
Please review the full warranty terms for complete details, limitations, registration requirements, and coverage information.
FAQ
What is the SPN2K-12BA mainly used for?
The SPN2K-12BA is designed to be installed inline on a 12VDC NMEA 2000 backbone to help protect the network from damaging surge events. It can also be installed inline on a drop cable between the backbone and a connected electronic device for an even higher level of protection at that device.
What type of network is the SPN2K-12BA designed for?
The SPN2K-12BA is designed for 12VDC NMEA 2000 networks and similar manufacturer networks that use compatible NMEA 2000 Micro-C style connectors.
Is the SPN2K-12BA for 12VDC systems only?
Yes. The SPN2K-12BA is designed for 12VDC NMEA 2000 network applications only. Do not use this surge protector on 24VDC systems, AC power, or any other voltage.
What does the 7KA rating mean?
The 7KA rating refers to the surge current capacity of the device. The SPN2K-12BA is designed to help protect compatible 12VDC NMEA 2000 network power and data conductors from damaging surge events.
What connectors does the SPN2K-12BA use?
The SPN2K-12BA uses NMEA 2000 Micro-C style connectors. It has one male connector and one female connector to provide pass-through polarity when installed inline on a compatible NMEA 2000 network.
Where should the SPN2K-12BA be installed?
The SPN2K-12BA is typically installed inline on the main NMEA 2000 backbone cable between T-connectors for connected devices. It can also be installed inline on a drop cable between the backbone and a connected electronic device for additional device-level protection.
How many SPN2K-12BA surge protectors should be used on a NMEA 2000 backbone?
For NMEA 2000 backbone lengths greater than 20 feet, Bad Wolf recommends using multiple SPN2K-12BA surge protectors, with one installed approximately every 20 feet of backbone length for improved network protection.
Can the SPN2K-12BA be used on a drop cable?
Yes. In addition to backbone installation, the SPN2K-12BA can be installed inline on a drop cable between the NMEA 2000 backbone and a connected electronic device. This can provide a higher level of surge protection for sensitive marine electronics.
Does the SPN2K-12BA protect both power and data conductors?
Yes. The SPN2K-12BA is designed to protect both the NMEA 2000 power conductors and the CAN/data conductors.
How is the SPN2K-12BA different from the SPN2K-12DA?
The SPN2K-12DA is installed at the 12VDC power feed and is designed to protect the NMEA 2000 power conductors. The SPN2K-12BA installs directly inline on the backbone or drop cable, protects both the power and data conductors, and has a higher 7KA surge rating.
What equipment can the SPN2K-12BA help protect?
The SPN2K-12BA can help protect NMEA 2000 networked marine electronics such as chartplotters, MFDs, fish finders, autopilots, NMEA 2000 sensors, engine gateways, GPS antennas, VHF/AIS equipment connected to the network, and other compatible networked marine electronics.
Is the SPN2K-12BA plug and play?
Yes. The SPN2K-12BA is designed as a plug-and-play inline surge protector for compatible 12VDC NMEA 2000 networks. No wire cutting or splicing is normally required when used with compatible cables and connectors.
Does installation direction matter?
The SPN2K-12BA can be mounted in any orientation. The device has one male connector and one female connector to provide pass-through polarity when installed inline on the network.
Does the SPN2K-12BA have status lights?
No. The SPN2K-12BA does not have status indicator lights.
Is the SPN2K-12BA waterproof?
The device itself is waterproof, but a NMEA 2000 network should not be exposed to direct moisture. Install the surge protector and network connections in a protected location whenever possible.
Can the SPN2K-12BA be used on 24VDC networks?
No. The SPN2K-12BA is for 12VDC applications only. Do not use it on 24VDC networks or any voltage other than 12VDC.
Can the SPN2K-12BA be used on AC power?
No. The SPN2K-12BA is for 12VDC NMEA 2000 network applications only and should never be used on AC electrical circuits.
Who should install this product?
This product should be installed by someone familiar with NMEA 2000 networks, marine electronics, and 12VDC electrical systems. When in doubt, consult a qualified marine electronics installer or technician.
Does this product include a warranty?
Bad Wolf surge protection devices include a 5-year product warranty. Eligible products may also include connected equipment warranty coverage when properly used and registered according to the warranty terms.