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Blue Sea 20A 4-Circuit Terminal Block
Blue Sea 20A 4-Circuit Terminal Block
Closed-Back Insulated Base with Nickel-Plated Brass Screw Terminals
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$9.27
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DESCRIPTION
Reliable Electrical Distribution for Marine, Automotive, and Off-Grid Systems
Organising low-amperage wiring in confined spaces requires hardware that prioritises electrical isolation and physical durability. The Blue Sea Systems 2404B Terminal Block is engineered to simplify point-to-point wiring across four discrete circuits, rated up to 20A continuous per circuit. Whether you are fitting out a marine helm, upgrading a 4WD canopy, or wiring control circuits in a caravan 12V or 24V electrical system, this unit provides a clean, professional termination point that eliminates messy inline splices and uninsulated connection points.
Enhanced Safety with Closed-Back Insulation
A critical vulnerability in many mobile and marine electrical setups is the risk of accidental short circuits against conductive mounting surfaces. Standard open-back blocks require separate insulating strips when mounted to aluminium boat hulls, steel vehicle chassis, or metal enclosures. This Blue Sea terminal block features a fully integrated closed-back design, which completely insulates live electrical connections from the mounting substrate. This reduces installation time and significantly lowers the risk of ground faults, stray current corrosion, and electrical fires in high-vibration environments.
Key Features and Construction Benefits
- Four Isolated Circuits: Each screw pair forms a completely independent circuit, allowing you to route different voltages, sensor lines, or switched feeds through a single compact footprint.
- Closed-Back Base: Fully insulates power from the mounting surface, making it safe for direct installation onto metal bulkheads, vehicle body panels, and conductive distribution boards.
- Corrosion-Resistant Hardware: Equipped with eight nickel-plated brass screw terminals that resist oxidation and corrosion in damp, coastal, and marine environments while maintaining low contact resistance.
- High-Profile Moulded Barriers: Deep phenolic-style barriers between each terminal pair prevent ring or spade terminals from rotating and accidentally bridging adjacent circuits.
- Adaptable Circuit Grouping: Compatible with terminal block jumpers, allowing adjacent poles to be linked together to create common positive or negative distribution busbars when system requirements change.
- Secure Surface Mounting: Pre-drilled mounting holes at either end allow for straightforward, rigid attachment to any flat panel or bulkhead.
Built to Outperform Standard Hardware
In demanding off-grid and marine applications, inferior terminal blocks often suffer from brittle plastic housings that crack under fastening torque, or plated steel screws that rapidly rust and cause high-resistance hot spots. Blue Sea Systems constructs this unit with a tough, heat-stabilised housing and marine-grade nickel-plated brass terminals. The tall protective barriers ensure that even when subject to constant road corrugations or wave impacts, your wire terminations remain physically separated and mechanically secure.
Versatile Applications Across DC and AC Systems
Thanks to its isolated pole architecture, this 4-circuit block is highly adaptable for complex low-current wiring tasks:
- Marine Dashboards and Helms: Consolidate navigation lights, bilge pump triggers, horn circuits, and instrument illumination in a tidy, serviceable layout.
- Caravan and Camper Control Wiring: Neatly terminate tank level sensors, water pump switches, thermostat wires, and low-draw LED lighting circuits.
- 4WD and Commercial Vehicles: Create a centralised junction point for auxiliary relays, driving light triggers, UHF radio power, and canopy accessories.
- Industrial and Off-Grid Enclosures: Organise inverter remote on/off triggers, battery management system (BMS) signal wires, and solar monitoring leads.
Upgrade Your Wiring Architecture
Bring order, serviceability, and marine-grade reliability to your electrical installation. Add the Blue Sea 20A 4-Circuit Terminal Block to your toolkit today for a cleaner, safer wiring setup across your vessel, vehicle, or off-grid power system.
SKU: BS-2404B
SPECIFICATIONS
| Product type | Terminal block |
|---|---|
| Current rating | 20A |
| Circuits | 4 |
| Design | Closed back; insulates power from the mounting surface |
| Circuit arrangement | Each screw pair is one isolated circuit; jumpers allow creation of common circuits |
| SKU: | BS-2404B |
| Model #: | BS-2404B |
| MPN: | BS-2404B |
| Package weight: | 0.048 kg |
| Package length: | 0.1 m |
| Package width: | 0.05 m |
| Package height: | 0.03 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.
DOCUMENTS
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