
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
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 termsTechnical 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.
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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.
