Solar
Solar Panels
Solar Charge Controllers
Mounting
Solar Accessories
Solar Kits
Batteries
Batteries
Battery Management
Battery Boxes
Battery Kits
Chargers
Mains Chargers
DC-DC Chargers
Alternators & Regulators
Charger Kits
Inverters
Inverters
Inverter Kits
Electrical
Circuit Protection
Connectors, Busbars & Terminals
Switch Panels & Accessories
240V Equipment
EV Chargers
Cables
Cables
Pre-made Leads
Cable Management
Converters
DC-DC Converters
Transformers
Monitoring
Monitoring
Monitoring Kits
Kits
Pre-Wired Boards
4x4/Canopy Power Systems
Solar Kits
Inverter Kits
Charger Kits
Battery Kits
Monitoring Kits
By Application
Caravan, Camper & RV
Camping & Portable
Marine/ Boat
4x4/4WD & Off-Road
Off-Grid Homes & Sheds
Golf Carts
Portable 12V Car Chargers
Portable 24V Bus/Truck Chargers
By Brand
Pre-Wired Boards
4x4/Canopy Power Systems
Solar Kits
Inverter Kits
Charger Kits
Battery Kits
Monitoring Kits
Blue Sea WeatherDeck DPDT ON-OFF-ON Toggle Switch
Blue Sea WeatherDeck DPDT ON-OFF-ON Toggle Switch
Blue Sea 4155 Marine Grade Switch for 12V/24V Nav & Anchor Lights
Regular price
$32.95
Availability:
In Stock at Blue Sea Warehouse
Allow up to 7 days before dispatch
View all products from Blue Sea
Guaranteed Safe and Secure Checkout
0
DESCRIPTION
Heavy-Duty Marine Grade DPDT Toggle Switch for WeatherDeck Panels
Engineered for demanding marine and off-grid environments, the Blue Sea Systems 4155 WeatherDeck Toggle Switch delivers dependable circuit control where moisture, salt spray, and vibration are constant challenges. Specially manufactured by Carling Technologies for seamless integration into Blue Sea Systems WeatherDeck panels, this Double Pole Double Throw (DPDT) switch provides versatile three-position ON-OFF-ON operation for complex DC electrical systems.
Whether you are fitting out a commercial vessel, upgrading a recreational boat helm, or building a weatherproof electrical control panel for a 4WD canopy, selecting the right switching hardware is critical. Standard automotive switches often fail prematurely when exposed to coastal air or damp conditions, leading to voltage drop, intermittent faults, or complete circuit failure. By contrast, the 4155 switch is built from the ground up to resist corrosion and maintain solid electrical continuity over years of service.
Key Features and Technical Benefits
- DPDT ON-OFF-ON Configuration: Features a six-terminal layout capable of controlling two independent circuits simultaneously, making it ideal for combining navigation lights and anchor lights with a shared bulb.
- Superior Marine Construction: Built with nickel-plated brass and a heat-resistant phenolic body to prevent rust, galvanic corrosion, and thermal degradation.
- IP67 Ingress Protection Capable: Achieves an IP67 rating for temporary immersion up to 30 minutes when installed alongside a compatible WeatherDeck Toggle Switch Boot.
- Fast, Secure Termination: Equipped with rear-facing 0.25 in (approx. 6.35mm) quick-connect tab terminals for straightforward wiring with standard female spade connectors.
- Manufactured by Carling Technologies: Produced by an industry leader in electrical switching to meet rigorous marine standards for mechanical and electrical longevity.
Solving Complex Wiring Challenges with DPDT Functionality
A Double Pole Double Throw (DPDT) switch is essentially two separate switches housed within a single body, operated by one heavy-duty metal bat lever. In the centre OFF position, all circuits are isolated. Pushing the lever to either ON position engages a distinct set of terminals. On marine vessels, this specific architecture solves a very common wiring dilemma: operating combined navigation and anchor lighting systems.
With a standard single-pole switch, attempting to run running lights (steaming, stern, and side lights) in one position and an anchor light alone in another position often requires external diodes to prevent back-feeding across the circuits. The Blue Sea Systems 4155 eliminates this complexity. Its internal dual-pole isolation allows you to wire the anchor light and navigation lights cleanly on separate poles, activating both when underway and isolating just the anchor light when moored, all from a single toggle.
Built to Withstand Harsh Australian Conditions
Electrical panels in open centre-console boats, flybridges, and external caravan lockers face severe environmental stress. To reduce the risk of water ingress and short circuits, this switch features a threaded mounting bushing with a hex nut for secure through-panel installation. Please note that to achieve the full IP67 waterproof rating, this switch must be mounted with a Blue Sea Systems WeatherDeck Toggle Switch Boot (sold separately, unless replacing an existing switch where the boot is still intact).
Rated for systems up to 30V DC and 5A, it is compatible with both 12V and 24V DC electrical architectures. For loads exceeding 5A, the switch can easily be used as a reliable trigger for a heavy-duty relay or solenoid.
Upgrade Your Helm or Control Panel
Ensure reliable operation of your vessel's lighting and auxiliary circuits with genuine Blue Sea Systems switching hardware. Add the 4155 DPDT WeatherDeck Toggle Switch to your cart today for a durable, professional-grade electrical installation.
SKU: BS-4155B
SPECIFICATIONS
Specifications
| Manufacturer Part Number | 4155 |
|---|---|
| Action | ON-OFF-ON |
| Pole / Throw | DPDT |
| Poles | 2 |
| Common Applications | Combining nav lights with anchor light with shared bulb |
| Maximum Amperage | 5 A |
| Maximum Voltage | 30 V DC |
| Terminal Type | Quick Connect Tab |
| Number of Terminals | 6 |
| Terminal Size | 0.25 in (6.35 mm) |
| Weight | 0.10 lb (0.05 kg) |
| Ingress Protection (When Mounted With a WeatherDeck® Toggle Switch Boot) | IP67-temporary immersion for 30 minutes |
| Construction | Nickel-plated brass and phenolic non-corrosive construction |
| SKU: | BS-4155B |
| Package weight: | 0.06 kg |
| Package length: | 0.15 m |
| Package width: | 0.1 m |
| Package height: | 0.06 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
Loading product documents…