Marine & Automotive Fuse Holders – Factory Direct Supplier
Keto Marine provides high-performance ATO/ATC waterproof fuse blocks designed for reliable circuit protection in cars, RVs, buses, yachts, and boats.
Why Choose Keto Marine Fuse Holders?
Marine-Grade Waterproof Protection
Built to withstand saltwater, humidity, and vibration
LED Indicator Lights
Instantly show circuit status for easier troubleshooting
OEM & ODM Customization
Logo printing, packaging, private label solutions available
Factory Direct Supply
Competitive pricing with no middleman
Low MOQ Orders
Flexible purchasing for wholesalers and brand owners
Certified Quality
CE, RoHS, ISO9001 international compliance
Technical Specifications
| Feature | Benefit |
| High Current Capacity | Supports up to 30A per way and 100A max input current, making it suitable for high-demand automotive and marine applications. |
| Middle Size Blade Fuse Compatibility | Suitable for ATC/ATO blade fuses, providing flexibility for various circuit protection needs. |
| LED Indicator | Red LED lamp indicates when a fuse is broken or when power is connected but the fuse is not plugged in, enhancing safety and troubleshooting. |
| Multiple Circuit Support | Features one input to 4/6/8/10/12 output circuits, ideal for managing multiple electrical circuits in vehicles. |
| Waterproof and Dustproof Design | Protects against water and dust infiltration, ensuring reliable performance in harsh environments. |
| Main Line Terminal Rating | M5 threaded studs rated at Total 100A 32V DC max, suitable for heavy-duty applications. |
| Main Line Wire Size | Supports #4-6 AWG wires, providing flexibility in wiring configurations. |
| Single Line Terminal Rating | M4 threaded studs rated at 30A 32V DC max, perfect for standard electrical connections. |
| Single Line Wire Size | Supports #12-16 AWG wires, ensuring compatibility with common wiring sizes. |
| Durable Materials | Constructed with PA66 base, PC cap, nickel-plated copper terminals, and stainless steel screws for enhanced durability. |
| Fuse Compatibility | Accepts ATO or ATC fuses ranging from 1A to 20A, providing versatility for various applications. |
| Wide Application | Suitable for use in cars, buses, boats, RVs, yachts, SUVs, and off-road vehicles, providing versatile usage. |
| Clear Labeling | Comes with 40 PP labels for easy identification and organization of circuits. |
| Factory Direct Sales | Benefit from factory direct prices and advanced production technology, ensuring high-quality products at competitive prices. |
Popular Fuse Block Models for Marine & Automotive Applications
6-Circuit Fuse Block with LED Indicators
Our most popular model, perfect for RVs, small boats, and off-road vehicles. Compact yet powerful, with integrated LEDs for easy troubleshooting.
6-way circuit protection for up to six devices
Waterproof and durable construction (PA66 base, PC cap, stainless screws)
Includes 70 PP labels for fast circuit identification
👉 Best choice for distributors and aftermarket suppliers thanks to low MOQ and customization support.
12-Circuit Fuse Block with Negative Bus Bar
Designed for complex wiring systems, this all-in-one solution includes a built-in negative bus bar to simplify grounding and reduce wiring clutter.
🔴 LED indicators for instant fault detection
⚡ Tin-plated copper contacts for superior conductivity
🛡️ Protective cover prevents moisture and dust intrusion
🔩 Easy installation with multiple mounting points
👉 Ideal for OEM installations, large yachts, and buses.
Applications
Our fuse holders are engineered for harsh conditions and multiple industries:
RVs & Campers
Durable fuse blocks for mobile living solutions.
Yachts & Boats
Marine-grade design for harsh environments.
Buses & Coaches
Stable power distribution in large vehicles.
4WD &ATV
Reliable circuit protection for modern vehicles.
Why Our Fuse Holders Stand Out
Low-Cost Products
Used PC material cover → turns yellow in 2–3 months
Iron terminals → poor conductivity & rust risk
Leads to customer complaints & replacements
Keto Marine Fuse Holders
Taiwan Chi Mei PC cover → clear & durable, no yellowing
Tinned copper terminals → excellent conductivity, corrosion resistant
Reliable long-term use → trusted by global OEM buyers
Choose Keto = No Yellowing, No Rust, No Complaints.
OEM & ODM Customization
We provide complete customization services:
Custom logo printing on housing and packaging
Private label branding for importers and distributors
Flexible fuse holder designs for different electrical layouts
Sample support for pilot projects
📌 Perfect for B2B buyers seeking long-term suppliers in the marine, RV, and automotive industries.
Build your own brand with Keto Marine.
Certified Quality
All Keto Marine fuse holders are tested and certified to meet international standards. Ensuring safety, durability, and compliance in every application.
Factory Showcase
Our factory is equipped with advanced automated production lines, skilled assembly teams, and strict inspection processes. From copper stamping and precision molding to final testing and packaging, every fuse holder is built to ensure consistent quality and long-term reliability for our global B2B partners.
Frequently Asked Questions
Not sure which fuse type suits your project? Contact our engineers for technical support.
What is the minimum order quantity (MOQ)?
We support low MOQ orders starting from 50–100 pcs, making it easier for distributors, wholesalers, and new projects to start cooperation.
Do you provide samples before bulk orders?
Yes, samples are available for evaluation. We can send samples with standard packaging, and customization is also possible upon request.
Can you customize fuse blocks for our brand?
Yes, we provide OEM & ODM customization including:
Logo printing on housing and packaging
Private label solutions
Flexible configurations (4, 6, 8, 12-way)
Custom fuse ratings and accessories
How should I install the fuse holder?
Use M5 studs for the main wire (#4–6 AWG) and M4 studs for branch wires (#12–16 AWG)
Secure with stainless steel screws provided
Stick labels to identify circuits
Red LED will light up when the fuse blows
What warranty do you provide?
We offer a 12-month warranty on all fuse holders. Any defective items can be replaced in your next shipment.
What is the difference between ATO and ATC fuses?
Both ATO and ATC are blade-type automotive fuses with the same electrical performance. The main difference is their physical size:
ATO = full-size blade fuse (standard size, approx. 19 mm height)
ATC = “mini” or compact version (shorter height, easier for space-saving applications)
Our fuse blocks are compatible with both types, depending on your application needs.
