Overmolded Inline Fuse Holder

Product Introduction

Overmolded inline fuse holders are made to fit right into a wire, so you can add fuse safety in places where a large fuse block will not fit. This is very helpful because it allows you to place a fuse close to the battery or the device you want to protect. This reduces the length of the unprotected wire, making the system safer. These holders are used in cars, trucks, boats, farm tools, and even factory machines. Many types can work on systems from 12 V up to 58 V and handle up to 60 A of power. They can hold blade fuses, glass fuses, or tube fuses. The outside shell is made from fire-safe plastic that will not burn quickly. Many holders also have covers and rubber seals to keep out dirt and water. The overmold design combines the wires and fuses them into a single, strong part that can withstand shaking, dust, and wet weather. This also makes them smaller, lighter, and quicker to install than large fuse blocks. Some models even say "Easy to install – no tools needed", which makes them very simple to use. We also offer a waterproof blade fuse holder, a 12V automotive overmolded inline fuse holder that is fully sealed and built for extremely tough outdoor jobs, such as trailers, boats, or off-road trucks.

Material recommendation

Wire and Cable

For an accurate power and signal transferring system, wires and cables are the most essential parts. Coppers are the best pick because these cables are easy to bend and durable to work with. There is a cover around the copper to keep the wire core safe. These covers resist the oil, dust, and water. You can pick the size of the wires according to your needs. Wire ends may have ring tips or spade tips, making them easy to connect to screws or posts. All joints should be crimped or soldered, then sealed with heat-shrink tubes to prevent water, dirt, and air from entering. This keeps the lines safe for a long time.

Fuse Insert

The fuse insert is the small metal part that melts when too much power flows through it. It is usually made of copper, silver, or a copper mix. In high temperatures, these metals melt quickly to keep the circuit safe. These metals react with high electricity to keep the full system safe. The type of metal used determines how quickly the fuse will blow when there is too much power. Our overmold fuse holders fit all regular fuse inserts. You simply select the correct fuse size and the right metal, and the holder will keep it safe, strong, and reliable.

Fuse Box

It is made with the best quality PVC materials that keep the fuse safe. These stop the box from melting, cracking, or burning if sparks or heat appear. In special overmolded inline holders, the plastic is shaped tightly around the wires, locking them in place. This creates a perfect seal, keeping all the parts strong and secure. These plastics are soft for the grip, and they are also durable enough to keep the fuse safe. To carry the electricity fastly and smoothly there are high quality metals are used. Tin and nickel are used in the coating to resist rust and dirt. For the tough weather conditions, plastics and metals are accurately used inside the fuse box.

Product Advantages

Waterproof Fused Relay
Box

A waterproof overmolded inline fuse holder works like a small sealed box that keeps a fuse safe inside. It is made with overmolded plastic, and rubber seals block water from entering. Even if heavy rain hits it or it is dipped in water, the fuse inside stays dry and safe. It works like a tiny sealed relay box built right into the wiring. You can easily place blade fuses or tube fuses. The strong plastic shell fights off hits, heat, oil, and even chemicals. A tight cover snaps on top and seals the fuse space fully. If you add this type of holder to a fuse panel, you give safe fuse protection to each power line.

Automotive Fuse and Relay Holder

Modern cars and trucks need many fuses and relays. An overmold fuse holder can function like a small fuse block while occupying less space. It is minimal, so it can fit under the hood, behind the dashboard, or in machine boxes. The hard shell is fire-safe, heat-safe, and can handle shaking from the engine. These holders are suitable for the common sizes. The car fuse holder, an inline type, works very well in hoods, trailers, or even on bikes, and it will continue to function reliably in dirty or wet conditions without any trouble.

Automotive Power Distribution Block

A power block is used when you need to send power to multiple lines from a single location. With an overmold design, each line can have its own fuse in a small block. For example, one block can send power to fans, pumps, and lights, each with its own fuse for safety. The block is much smaller and easier to mount than a large fuse box. It can even be shaped to fit into odd spaces, corners, or panels. Wiring becomes simple because one strong bar sends power in, and each fuse sends safe power out. This makes the system neat, light, and safe for extended use.

Solution

Overmolded inline fuse holders offer a straightforward and convenient way to add fuse safety wherever needed. Their sealed shells stop water, dirt, dust, and heat from breaking the circuits. They allow you to add fuses without drilling large holes or installing heavy boxes. They protect wires from sparks, shorts, and wet trouble. When compared to large fuse boxes, they save space, make wiring lighter, and are easier to use.

Automotive Bulb Socket Pigtail

When you need to protect lights, an overmolded inline fuse holder can guard just one bulb or lamp. It comes with two wires and a plug at the end. This type of pigtail can connect right to headlights, tail lights, signal lights, or work lights. Each lamp can have its own fuse, so if one light has a problem, the rest will still work. Our overmolded inline fuse holder 12v models come with caps that keep dirt and water out. The wires, usually 14–18 AWG, are the right size for normal light loads. This is much easier than adding new wires. It keeps each light safe, neat, and easy to fix.

Automotive Multi-Pin Connector

We also build fuse holders that join with multi-pin plugs. Each pin in the plug can feed one line that has its own fuse. The fuse holders can be built inside the plug or on short wires right before it. This makes one complete plug set with seals and built-in fuses. Our multi-pin overmolded inline fuse holder kits come with plugs, seals, and caps. They make it very easy to add fuse safety to wire harnesses with many lines, such as those found in cars, trucks, boats, and large machines.

Automotive Power Distribution Box

When multiple fuses need to be installed in one location, a small fuse box is the best choice. These boxes can hold two, four, or even six fuses in one neat unit. Our overmold design keeps these boxes very small and simple to mount. The hard case gives each fuse its own slot, and a tight cover seals the top. Wires or bars feed each fuse line, and the box can be bolted onto a panel or frame. The overmold process seals the edges, wire exits, and fuse slots, preventing dust and water from entering. This makes the box perfect for trucks, boats, and factory floors.

Automotive Multi-Pin Wiring Harness

Using overmolded inline fuse holders within a wiring harness is a very smart way to keep the entire system safe. A multi-pin harness can supply power to pumps, lights, fans, radios, and sensors. By adding a fuse at the start of each line inside the harness, the harness is safe right from the beginning. When the harness is installed, each line already has its own fuse. The worker does not need to add extra fuses later. You simply plug in the harness, and it is ready. Each line begins with a fuse holder sealed in place. The overmold keeps out water, dust, and shaking, which makes the harness last much longer, even in hard use.

Industries and Applications

Automotive Use in Cars, Trucks, and Motorcycles

Overmolded inline fuse holders are essential for many vehicle parts. They keep out dust, water, and heat. There are separate fuses for each part. Each part is connected to the fuses to keep the control panel safe.

Marine Use in Boats and Yachts

Strong marine-grade overmolded inline fuse holders are needed in boats and yachts. Saltwater is highly corrosive and can quickly damage open fuses. A sealed holder with a rubber cap prevents water from entering and keeps the parts safe.

Off-Road and RV Adventures

Overmolded holders stay strong in tough places. They make it easy to add heaters, lights, fridges, or winches while keeping every wire safe. They work even when shaken hard on rocky trails.

Industrial and Machine Protection

Inline holders are also used in machines and factories. They protect motors, fans, and sensors. They work well in dusty, oily, and loud places. They are quick to replace, so machines do not have to stop for long.

Solar and Renewable Power Systems

Solar and wind systems need safe inline holders. These holders keep DC lines safe and dry. To keep the battery and the system safe, overmolded inline fuse holders are vital. Outdoors, they stop damage from water, dust, or heat.

Electronics and Hobby Projects

Small mini blade fuse holders are used in robots, drones, and fun hobby kits. Their small size saves space, and their covers block shorts. This makes them a favorite for builders and young makers.

Quick and simple to install without any complex steps

Adding these holders is very simple. Most holders come with wires or tips already attached. You just crimp or connect them with simple pliers. There is no need for drilling or extra tools. Some even say "Easy to install – no tools needed." Many come with ring ends or spade ends, making them even easier to attach. The fuse cap can be opened by hand, allowing for a quick and easy replacement of a fuse, which takes only seconds. Some holders clip onto wires with straps or built-in locks. Anyone can install one in minutes with little effort.

Overmolding Technology for Protection

The cables and the wires are covered in PVC or rubber to keep the harness. It makes the harness more durable and flexible. The overmolded cap is strong, and it will not fall. To resist the heat, PVC and other materials are used in this overmolding process. There are no errors or leaks in the harness in overmolding technology, so that the harmful objects cannot get inside the harness. Even under stress, vibration, or bending, the fuse stays safe. This provides peace of mind, knowing your system is always well protected.

Compact in Size But High in Power & Performance

These holders are powerful; they can carry high currents while still fitting in tiny spaces. A type with 10 AWG wire can hold 30 A while still being small enough to fit in your hand. A 15 A type uses 14 AWG wire for smaller needs. The balance of wire size, fuse size, and case size makes them safe and efficient. Thick copper wires and strong ends cut down power loss. The small cases, just a few inches long, fit behind panels, under dashboards, or in small boxes. You get high power and small size all at once.

Certified and Trusted Worldwide

Safety and quality are essential. The holders pass through the difficult processes to ensure the system's safety. For the quality control, the harness follows the ISO & RoHS. You will see marks like UL, CE, and CSA. IP67 ratings are tested under IEC standards to ensure they effectively block dust and water. Fire-safe plastics pass strict flame tests. All these tests and marks show that holders are safe, strong, and trusted around the world.

Reliable Provider for Overmolded Inline Fuse Folder

Choosing QL-Custom Technology means choosing experts who care about your needs. We specialize in crafting custom fuse holders and wire parts for individuals worldwide. At QL-Custom, you receive custom parts tailored to your specific needs, not just off-the-shelf stock. We also give fast answers, helpful service, and on-time shipping. Our team provides assistance with design, samples, and post-sale support. For safe, strong, and trusted overmolded inline fuse holders, QL-Custom Technology is the best partner for every project.

Customer Reviews

I used this on my boat and it worked great. The marine grade inline fuse holder stayed dry and safe even in rain and salt water. It had no leaks and was easy to wire.

John Smith

We use many heavy duty inline fuse holders for our off-road kits. They are strong, seal out water, and the IP67 rating keeps them safe in mud and water. They always work and never fail. The QL-Custom team has been great too. I will keep buying these.

Michael Thompson

This 12 gauge inline fuse holder is small but tough. I used it on my ATV with a 30 A fuse and it worked fine. The seal is tight, so no water or dirt gets inside. It gives steady power to my lights. I'm very happy with it and will buy more.

Sarah Johnson

I got the 30 amp inline fuse holder for my RV solar system. The wire was the right size and easy to install. I tested it in rain and light snow, and it worked with no issues. It's a good product and I would recommend it for RV setups.

David Lee

The blade fuse holder waterproof was just what I needed for my old car. It kept my wiring dry and was easy to mount. It looks neat and keeps me sure that nothing will short out. I'm very happy with how it works and I'll buy more.

Linda Martinez

The inline holders with covers make my installs look clean and pro. My clients like how neat it looks, and the LED makes it easy to check the fuse. I always use QL-Custom now because the quality is great.