MaxiBus 250A avec capot - six goujons 5/16"-18 - MaxiBus 250A BusBar - Six 5/16

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Blue Sea Systems

2126-BSS

MaxiBus 250A with cover - six 5/16"-18 studs

Designed for high-current distribution, the BLUE SEA MaxiBus 250A is a marine busbar with a 250A capacity.

It features six 5/16"-18 stainless steel studs, supplied with serrated flange nuts, and includes a protective cover for safety.

This model is part of Blue Sea’s MaxiBus range, providing a robust solution for centralizing electrical connections aboard.

Retail priceBenefit from the professional rate

$80.76 USD

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Low stock

Free pickup point from €150 in France
Pickup at Skysat possible

Custom installation

Trust Skysat to install the equipment on board

Request a quote

Installers near you

thanks to our network of approved installers

Find an installer

Support service

Opt for additional installation assistance

Technical specifications

Amperage	250.0
Nombre de circuits	6.0
Nombre de pôles	Single-pole
Mounting type	Surface mounting
Taille maximale de cosse de câble	8
Dimensions (W x H x D)	201.3 x 48.5 x 29.5
Weight	0.45
Type d'application du busbar	High current distribution
Couvercle de protection inclus	Yes
Flange Nut Material	Stainless steel
Flange Nut Type	Notched
Diamètre des trous de fixation	#10 or M5
Entraxe de fixation horizontal	146.1
Product type	Distribution bar
Nombre de goujons	6
Terminal Stud Material	Stainless steel
Terminal Stud Size Imperial	5/16"
Terminal Stud Thread Imperial	5/16"-18

Detailed description

Designed for marine applications requiring high-current distribution, the BLUE SEA MaxiBus 250A busbar with six 5/16"-18 studs provides a centralized solution for your electrical connections. This busbar can handle a continuous current of 250 amperes, making it suitable for medium to large electrical systems on recreational or commercial boats.

Design and connectivity

The MaxiBus 250A features six stainless steel studs sized 5/16"-18, compatible with 5/16" or M8 eye terminals. Each stud is supplied with a stainless steel serrated flange nut, ensuring a secure connection resistant to vibration. Its compact dimensions (201.3mm long, 48.5mm wide, 29.5mm high for the base) facilitate installation in confined technical spaces. The included protective cover insulates connections, reducing the risk of accidental short circuits and protecting against splashes.

Positioning within the Blue Sea range

The MaxiBus 250A is part of Blue Sea Systems' power distribution busbar range. It stands out from standard "common" busbars (typically limited to 100A or 150A) due to its higher current capacity, making it suitable for main circuits or significant power consumer groups. For even higher current requirements, Blue Sea offers the PowerBar series, capable of handling up to 600A or 1000A. The MaxiBus 250A thus provides a balance between compactness and current capacity for installations requiring reliable distribution without the bulk of very high-power solutions.

Expert opinion

Pol CONIN

Digital Manager

« Technical analysis of the MaxiBus 250A: centralized power distribution »

Blue Sea's MaxiBus 250A is an essential component for centralizing and distributing high currents aboard. It fits into electrical architectures where multiple consumers or sources require a reliable connection to a common point, whether it's the boat's main ground or a primary positive supply. Its 250A capacity makes it suitable for applications such as distributing power from a service battery to inverters, chargers, or auxiliary battery banks, or for grouping grounds for navigation electronics.

Installation is straightforward: mounting uses fixing points for #10 or M5 fasteners, and 5/16"-18 studs are sized for standard ring terminals. The protective cover is a significant safety advantage, reducing the risk of accidental contact or saltwater spray on live terminals. It is critical to ensure proper tightening of serrated flange nuts to guarantee low contact resistance and mechanical resistance to marine vibrations.

This model serves as an efficient intermediate solution, more robust than small-section busbars but less bulky than very high-capacity PowerBar units. It is ideal for medium to large sailboats and motorboats that do not require currents exceeding 250A per busbar. It does not replace a fuse block or circuit breaker for individual circuit protection but acts as the central distribution link.

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MaxiBus 250A with cover - six 5/16"-18 studs

$80.76 USD

Frequently Asked Questions

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What is the maximum current capacity of this MaxiBus busbar?

The BLUE SEA MaxiBus busbar is designed to handle a maximum continuous current of 250 amperes.

How many connection points are available on the MaxiBus 250A?

The MaxiBus 250A is equipped with six studs, providing six distinct connection points for your electrical cables.

Which types of ring terminals are compatible with the studs on this busbar?

The 5/16"-18 stainless steel studs are suitable for 5/16" or M8 ring terminals.

What are the materials of the bolts and nuts supplied?

The six bolts are made of 5/16"-18 stainless steel. Each bolt comes with a stainless steel serrated flange nut, ensuring a secure and vibration-resistant connection.

What type of fasteners are recommended for mounting the MaxiBus 250A?

For mounting the MaxiBus 250A busbar, #10 or M5 fasteners are required for the mounting holes.

Is this product suitable for marine environments?

Yes, the MaxiBus 250A is specifically designed for marine applications requiring high current distribution. It is ideal for medium to large electrical systems on recreational or commercial boats.