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Blue Sea 30A 12-Circuit Terminal Block

Closed-Back Phenolic Base with Isolated #6-32 Screw Pairs


Regular price $21.62
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12-circuit 30A terminal block with black closed-back insulation and screw terminals

Blue Sea 30A 12-Circuit Terminal Block

DESCRIPTION

Reliable Multi-Circuit Power Distribution for Marine and Off-Grid Wiring

Engineered for Safe, Isolated Electrical Terminations in Demanding Environments

Organising complex electrical systems in marine vessels, caravans, and custom 4WD canopies requires components that prioritise both structural integrity and electrical safety. This 30A 12-circuit terminal block is engineered to simplify wiring layouts by providing twelve distinct, isolated electrical paths within a single, compact footprint. Each screw pair forms one dedicated circuit, allowing installers and auto-electricians to consolidate point-to-point connections, sensor wiring, and low-amperage accessory feeds into one accessible location.

In mobile and marine applications, constant vibration and moisture exposure can quickly degrade inferior wiring junctions, leading to intermittent faults, high resistance, or hazardous short circuits. By utilising a professional-grade electrical terminal block, you eliminate the mess of inline splices and tape, creating a clean, serviceable, and systematic electrical architecture suitable for 12V, 24V, and AC/DC control systems.

Closed-Back Insulation and Phenolic Construction

A critical risk in vehicle and boat wiring is unintentional grounding against conductive mounting surfaces such as aluminium hulls, steel vehicle chassis, or metallic electrical enclosures. This unit features a solid closed-back design that completely insulates the conductive brass busbars from the mounting surface. This allows for direct installation onto metal bulkheads or panels without requiring secondary insulating backing boards.

The base and protective barriers are constructed from heavy-duty moulded black phenolic material. Unlike standard plastics that can warp or melt under thermal load, phenolic resin offers exceptional mechanical strength, heat resistance, and dielectric properties. The tall physical barriers between each #6-32 (Approx. M3.5) screw terminal pair prevent frayed wire strands or rotating ring terminals from bridging adjacent circuits, substantially reducing the risk of accidental short circuits during installation or maintenance.

Key Features and Benefits

  • 12 Isolated Circuits: Features twelve independent screw pairs rated up to 30A maximum current, ideal for managing multiple switched feeds, grounds, or signal wires.
  • Closed-Back Base: Fully insulates live electrical connections from metal mounting panels, chassis, and hulls for enhanced system safety.
  • Moulded Phenolic Barriers: High-strength, heat-resistant dividers physically separate each terminal pair to prevent electrical arcing and short circuits.
  • Corrosion-Resistant Hardware: Equipped with nickel-plated #6-32 (Approx. M3.5) brass screws to ensure reliable clamping force and low-resistance conductivity in humid or coastal environments.
  • Flexible Circuit Configuration: Compatible with terminal block jumpers (available separately) to easily bridge adjacent terminals and create common power or ground distribution buses where required.
  • Secure Surface Attachment: Integrated mounting holes at either end allow for straightforward, vibration-resistant fastener installation.

Versatile Applications Across Marine, RV, and Industrial Setups

Whether you are building a custom switchboard for a boat helm, wiring a dual-battery canopy setup, or assembling an industrial control cabinet, this 12-way barrier strip adapts to your schematic requirements. Because each pair is isolated out of the box, you can safely run different voltages, polarities, or signal types adjacent to one another on the same block. When your layout requires shared connections, adding compatible jumpers transforms individual pairs into a common busbar, offering the best of both worlds without needing multiple components.

  • Marine Electrical Systems: Ideal for helm wiring, navigation light distribution, bilge pump switches, and instrument panel terminations.
  • Caravans and Motorhomes: Consolidate 12V lighting circuits, water pump feeds, and tank level sensor wiring neatly behind control panels.
  • 4WD and Service Bodies: Create a central junction point for auxiliary lighting, central locking canopies, and compressor trigger wires.
  • Off-Grid and Industrial Control: Organise relay triggers, monitoring shunts, and low-voltage automation wiring inside power enclosures.

Upgrade Your Wiring Architecture Today

Streamline your next electrical installation with a component built for long-term reliability and safety. Add the Blue Sea 30A 12-Circuit Terminal Block to your toolkit today to achieve a clean, professional, and easily serviceable wiring layout in your vessel, vehicle, or off-grid system.


SKU: BS-2512B

SPECIFICATIONS

SpecificationDetails
Maximum current30A
Number of circuits12
DesignClosed back; insulates power from the mounting surface
Circuit configurationEach screw pair is one isolated circuit
JumpersAllow creation of common circuits

SKU: BS-2512B
Model #: BS-2512B
MPN: BS-2512B
Package weight: 0.216 kg
Package length: 0.22 m
Package width: 0.05 m
Package height: 0.04 m

WARRANTY

Blue Sea Warranty Policy

Blue Sea Systems products sold by us are supplied with a warranty against defects for the warranty period shown below, subject to the product type, application and the terms of this warranty policy.

The express warranty provided by us is limited to a maximum of 5 years from the original date of purchase, unless otherwise required under Australian Consumer Law.

Blue Sea Systems may offer longer manufacturer support on some products at their discretion

Warranty Lengths by Product Range

Blue Sea Product Range Warranty Length Application / Notes
Most Blue Sea Systems Products 5 years Applies to most Blue Sea Systems products found to be defective in materials or manufacture.
P12 Battery Chargers 5 years Warranty period starts from the original date of purchase.
P12 Remote Displays 5 years Warranty period starts from the original date of purchase.
Digital Meters 3 years Warranty period starts from the original date of purchase.
Vessel System Monitors 3 years Warranty period starts from the original date of purchase.

Warranty Assessment and Remedy

If a Blue Sea Systems product is found to be defective in materials or manufacture within the applicable warranty period, we will, at our discretion, arrange a repair, replacement, store credit or refund, depending on the nature of the fault and the requirements of Australian Consumer Law.

Products may need to be returned for assessment before a warranty claim can be approved. Where required, the product must be returned with dated proof of purchase and a clear description of the fault.

Labour costs for removing, replacing, reinstalling or diagnosing a product are not covered by this express warranty unless otherwise required under Australian Consumer Law.

Making a Warranty Claim

To make a warranty claim, please contact us with your dated proof of purchase, product details and a description of the fault.

The product may need to be returned for inspection before the claim can be assessed. If the product is confirmed to be faulty and covered by this warranty, we will advise the available remedy.

What This Warranty Does Not Cover

This warranty does not cover faults or damage caused by incorrect installation, incorrect application, misuse, abuse, neglect, unauthorised modification, accidental damage, normal wear and tear, environmental damage, or failure to use the product in accordance with the manufacturer's instructions.

  • Incorrect installation or wiring
  • Incorrect product selection or application
  • Misuse, abuse or neglect
  • Physical or accidental damage
  • Water ingress or environmental damage outside the product's intended use
  • Unauthorised modification or repair
  • Normal wear and tear
  • Labour costs for removal, replacement, reinstallation or diagnosis
  • Freight, travel or call-out costs unless otherwise required by law
  • Products not returned for assessment when reasonably required

Manufacturer Support

Blue Sea Systems may provide additional manufacturer support on some products beyond the warranty period listed above. Where available, we may assist customers in contacting the manufacturer, but any manufacturer support beyond the express warranty period is subject to the manufacturer's own terms and continued availability.

Australian Consumer Law

This warranty is in addition to other rights and remedies available at law. Our goods come with guarantees that cannot be excluded under the Australian Consumer Law. You are entitled to a replacement or refund for a major failure and compensation for any other reasonably foreseeable loss or damage. You are also entitled to have the goods repaired or replaced if the goods fail to be of acceptable quality and the failure does not amount to a major failure.

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