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Blue Sea 20A 2-Circuit Terminal Block
Blue Sea 20A 2-Circuit Terminal Block
Closed-Back Insulated Base with Isolated Zinc-Plated Screw Terminals
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DESCRIPTION
Reliable Electrical Distribution for Marine, Automotive, and Off-Grid Wiring
Organising complex low-current electrical connections requires components engineered for durability and safety. The Blue Sea Systems 2402B provides a dedicated, organized point of connection for two distinct electrical pathways. Rated for up to 20A per circuit, this terminal block is purpose-built for demanding 12V, 24V, and AC/DC electrical systems found in marine vessels, caravans, 4WD dual-battery canopies, and industrial control panels.
In mobile and marine environments, vibration and moisture can quickly degrade sub-standard wiring joins, such as twist-on connectors or taped splices. By replacing makeshift joins with a structured terminal block, you establish a secure mechanical connection that simplifies system maintenance, streamlines troubleshooting, and maintains low contact resistance over time.
Engineered for Safety and Mounting Versatility
A critical risk in automotive and marine electrical installations is accidental grounding against metal chassis components, aluminium boat hulls, or conductive bulkheads. This terminal block eliminates that hazard by incorporating a fully moulded closed-back design. The base completely insulates the conductive brass bus bars and screw terminals from the mounting surface, allowing you to fasten the block directly to metal panels without requiring additional insulating backing boards or spacers.
To further mitigate the risk of electrical faults, the housing features raised moulded circuit barriers between each screw pair. These physical partitions prevent ring or spade terminals from rotating into adjacent circuits, significantly reducing the chance of accidental short circuits during installation or when subjected to heavy vehicle and wave vibration.
Key Features and Benefits
- Isolated Circuit Architecture: Each screw pair forms an independent, isolated circuit, making it straightforward to pass power cleanly through bulkheads or create structured junction points.
- Insulated Closed-Back Base: Moulded backing fully separates live electrical components from the mounting substrate, permitting safe installation directly onto conductive metal surfaces.
- Raised Terminal Partitions: High physical barriers between terminals maintain strict electrical isolation and prevent adjacent lugs from making contact.
- Flexible Jumper Compatibility: Easily convert isolated circuits into a common power or ground distribution bus by bridging terminals with compatible Blue Sea Systems jumpers (sold separately).
- Corrosion-Resistant Hardware: Equipped with durable, zinc-plated screw terminals designed to provide high clamping force and reliable conductivity in damp or coastal environments.
- Integrated Mounting Flanges: Pre-moulded mounting holes at either end allow for straightforward, secure surface fastening in tight electrical enclosures or behind dash panels.
Versatile Applications Across 12V and 24V Setups
While compact in footprint, a two-circuit terminal block is an essential building block for tidy wiring looms. Because each screw pair operates independently, you can simultaneously manage a positive feed and a negative return on a single block, or manage two separate positive triggers for auxiliary lighting and instrumentation. If your layout requires splitting a single incoming feed into multiple outgoing branches, adding terminal jumpers quickly adapts the unit into a compact busbar.
Common applications include:
- Marine Helm and Console Wiring: Terminating navigation lights, bilge pump switches, depth sounders, and VHF radio power feeds.
- Caravan and RV Distribution: Creating serviceable junction points for internal LED lighting circuits, water pump controllers, and 12V monitoring sensors.
- 4WD and Service Body Canopies: Extending accessory power for work lights, central locking modules, and auxiliary gauge clusters.
- Off-Grid and Industrial Enclosures: Neatening low-amperage relay triggers, solar controller sensing wires, and battery management system (BMS) signal leads.
Upgrade Your Wiring Standards
Whether you are rectifying an existing wiring loom or building a new custom electrical board from scratch, choosing marine-grade distribution hardware reduces voltage drop and improves long-term system reliability. Add the Blue Sea 20A 2-Circuit Terminal Block to your toolkit today for a cleaner, safer, and more serviceable electrical installation.
SKU: BS-2402B
SPECIFICATIONS
| Specification | Details |
|---|---|
| Product type | Terminal block |
| Maximum current | 20A |
| Circuits | 2 |
| 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-2402B |
| Model #: | BS-2402B |
| MPN: | BS-2402B |
| Package weight: | 0.048 kg |
| Package length: | 0.08 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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