Accessories
    Blue Sea Systems 12/24V DC Dual USB Charger 4.8A Switch Mount
    Blue Sea Systems

    Blue Sea Systems 12/24V DC Dual USB Charger 4.8A Switch Mount

    Switch-mount dual USB charger, 4.8A total, for Contura panel apertures

    SKU BLUE-1039B

    Our Price$44.80MSRP $53.76
    Low stock · 4 left

    Dual USB charger, 4.8A total output, 12/24V DC input. Mounts directly in a Contura switch panel cutout, 1.45in x 0.83in, no drilling needed.

    Maximum Output Current
    4.8A DC (total)
    Input Voltage
    12V DC / 24V DC
    Cut Out Dimensions
    1.45in H x 0.83in W
    IP Rating
    IP45 (cover closed)
    Weight
    0.10 lb
    Voltage
    12/24V DC
    Amperage
    4.8A
    Function
    USB Charger

    Stocked items typically ship the next business day from our US warehouse. 30-day returns on unused stocked items. Exclusions apply. Return policy · Shipping policy

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    About this product

    Blue Sea Systems Dual USB Charger, switch mount, 4.8A total, 12/24V DC input, fits Contura cutout. Manufacturer PN 1039.

    The Blue Sea Systems 12/24V DC Dual USB Charger, Switch Mount version, packs the same 4.8A intelligent-recognition charging as the socket-mount model into a Contura-style rectangular footprint that drops directly into an existing switch panel cutout. It shares the same protection features and output rating as the round-hole version, just in a different physical shape suited to panel work.

    Key features

    • 4.8A DC total output, 12V/24V DC input (9-32V DC range)
    • 5V DC ±5% output, intelligent device recognition
    • Fits standard Contura switch aperture, 1.45in x 0.83in cutout
    • Reverse polarity, short circuit, and thermal overload protection
    • Protective dust cap, potted for the marine environment, IP45 with cover closed

    This is the charger to reach for when a Contura water-resistant switch panel already has (or is being built with) an open position — it works with 3, 4, 6, and 8-position Contura panels in both white and black, and drops in alongside the panel's existing circuit breaker switches for a matched, integrated look rather than a separate accessory bolted on elsewhere. This keeps the helm or console face looking like one cohesive panel instead of a mix of mismatched add-ons.

    Several Blue Sea Contura panels ship with this charger already installed (PN 8121, 8421, 8521), so check whether your panel already includes one before ordering a duplicate. If the mounting location is a plain round hole rather than a switch cutout, the socket-mount version (PN 1045) is the better fit instead, since a Contura-shaped charger won't seal properly in a simple round opening.

    Product details

    Maximum Output Current
    4.8A DC (total)
    Input Voltage
    12V DC / 24V DC
    Cut Out Dimensions
    1.45in H x 0.83in W
    IP Rating
    IP45 (cover closed)
    Weight
    0.10 lb
    Voltage
    12/24V DC
    Amperage
    4.8A
    Function
    USB Charger
    Device Type
    USB Charger
    Manufacturer
    Blue Sea Systems
    Mounting Style
    Contura switch aperture

    Shipping & returns

    • Stocked items typically ship the next business day from our US warehouse.
    • 30-day returns on unused stocked items. Exclusions apply. See policy
    • Custom and quoted items are non-returnable once production begins.

    Warranty

    Backed by the original manufacturer’s warranty plus our workmanship guarantee on assembled harnesses. Contact us with your invoice and we’ll coordinate any covered repair or replacement.

    Read the full warranty terms

    Technical support

    Need help choosing the right part?

    Our marine electrical team can review your setup and recommend compatible products. Send a photo, a sketch, or your circuit list and we'll come back with a parts list that fits the boat.

    Certifications & training

    • ABYC-aware build practices
    • OEM-grade marine wire & terminals

    Additional capabilities are based on hands-on experience building marine wiring systems rather than third-party certification.

    Share your project

    Have you used this product in a project? Send us photos of your install for consideration in our project gallery.

    Why buy from Common Ground Marine

    • 20+ years building marine wiring harnesses, panels, and shore-power systems.
    • Engineers — not a phone tree — review every custom build before parts are cut.
    • OEM-grade components: tinned copper, sealed connectors, marine-rated jackets.