3. Four Connect cable accessories for the car
  5. Automatiksicherung 100/200/300A

Automatiksicherung 100/200/300A

Automatiksicherung 100/200/300A

Technical Highlights

  • Slow-blow characteristic, 100A-300A rating, hexagon for 50 mm² cable.
  • Waterproof construction, adapter for 20 mm² cable included.
  • Available for various requirements, protects car hi-fi systems.
  • More technical details
€36.90
€36.90 €36.90
2% discount with credit card

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ProductAutomatiksicherung 100/200/300A · 100A

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including VAT plus shipping
Version: 100A
Estimated delivery: Sep 22–Sep 29.
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Four Connect-Automatiksicherung 100/200/300A-Sicherung-masori-kaufen
€36.90
€36.90 €36.90

The Four Connect automatic fuse is a waterproof circuit breaker that provides ideal protection for car audio systems and high-power circuits. Equipped with solid hex bolt connections, it allows the use of 50 mm² cables and can also be used with 20 mm² cables through the included adapter sleeves. The slow characteristic of the fuse prevents immediate tripping during short current spikes, making it perfect for use in demanding environments like the engine compartment. The fuse is available in three variants with 100A, 200A, and 300A to meet different requirements.

Features

  • Waterproof housing suitable for demanding environments
  • Hex bolt connections for 50 mm² cables
  • Includes adapter sleeves for 20 mm² cables
  • Slow characteristic for optimal protection against short-term overload spikes
  • Available in versions with 100A, 200A, or 300A

Technical Data

  • Versions 100A, 200A, or 300A
  • Cable connection hex bolt for 50 mm² cables
  • Adapter cable sleeves for 20 mm² included
  • Type slow automatic fuse (circuit breaker)
  • Waterproof Yes

Frequently Asked Questions about Automatiksicherung 100/200/300A

How does the Four Connect automatic fuse work in the engine compartment?

This slow-acting fuse functions as a waterproof circuit breaker that detects overloads in car Hi-Fi circuits and trips during sustained overcurrents. In the engine compartment, a fuse system must withstand challenging conditions such as moisture and high temperatures. This is where the robust housing comes into play, keeping out penetrating water and dirt. Once the current exceeds the specified rated current for an extended period, the internal mechanism opens and interrupts the circuit. However, short-term current spikes, such as when starting powerful amplifiers, are not immediately considered dangerous overloads due to the slow-acting characteristic. Thus, the circuit remains intact as long as the critical value is only briefly exceeded, which is particularly crucial in the engine compartment.

Why is the housing designed to be waterproof?

The weatherproof design prevents corrosion and unpredictable damage from penetrating moisture. Especially in areas with increased splash water risk, such as directly behind the bumper or in the engine compartment, sensitive components are heavily stressed. If the housing is not sealed, moisture can enter and impair the function of the internal circuit protection. To avoid this, the Four Connect automatic fuse has a sealed housing that protects all relevant contact points from water, dust, and other particulates. This ensures that the tripping mechanism remains reliable even in heavy rain and guarantees constant protection of the circuit. Thus, the waterproof construction significantly contributes to the stability of the entire car Hi-Fi system under challenging conditions.

What connection options does the Four Connect automatic fuse offer?

This sluggish component features massive hexagonal bolt connections designed for 50 mm² cables, allowing for the safe transmission of high currents. However, if you want to integrate wires with a smaller cross-section, you can use the included adapter sleeves to connect 20 mm² cables precisely. The solid design of the screw connections minimizes contact resistance and avoids disruptive voltage drops in the car audio system. Additionally, the large contact surfaces facilitate installation, as the cable ends are securely enclosed. This ensures a firm fit even under strong vibrations in the vehicle, such as those caused by subwoofer-induced oscillations. This allows for flexible integration for different circuits and power requirements.

How does the sluggish characteristic ensure safe protection?

In the case of short-term load peaks, such as those that occur when turning on car audio amplifiers, a fast fuse may trigger too early. The sluggish design, on the other hand, delays the response, so that only sustained overload conditions actually lead to shutdown. In practice, this means that your audio system can ramp up without interruptions, without needing to be turned on again constantly. The Four Connect automatic fuse ensures, thanks to this sluggishness, that your system is only turned off in real danger. This gives you high durability and avoids unnecessary failures during loud music or intense bass sequences. Thus, you receive reliable line protection without compromising performance.

In which ampere variants is the Four Connect automatic fuse available?

Three different tripping levels are offered to cover various power needs in the vehicle. The 100A version is often sufficient for moderate car audio components that allow for higher levels but do not cause extreme power spikes. For more demanding audio systems or power-intensive additional consumers, the 200A variant is recommended, as it can handle short-term voltage spikes confidently before it activates under continuous overload. If you plan particularly high power reserves or operate large amplifiers, the model with 300A offers sufficient headroom. This way, all three versions cover a wide range, allowing you to always choose the optimal fuse without having to worry about short-term load fluctuations.

How do I install the circuit breaker in the car step by step?

First, disconnect the negative terminal of the vehicle Battery to avoid short circuits. Then, place the Four Connect automatic Fuse near the Battery, ensuring the shortest possible wiring distance between the Fuse and the positive terminal. Make sure to position the waterproof housing in an area that does not come into direct contact with sharp edges or hot engine compartment peripherals. Next, loosen the hex bolts, slide in a conductor with a suitable cross-section of 50 mm² or 20 mm² including an adapter sleeve, and tighten the connections. Finally, reconnect the ground wire. By following these steps, you ensure a professional and reliably protected car Hi-Fi system.

What are the strengths of the Four Connect automatic Fuse at high currents?

Especially in high-performance applications with multiple amplifiers and subwoofers, high continuous currents arise that a conventional circuit protection may not always handle reliably. Here, the massive connection bolts score points, ensuring a secure contact with 50 mm² thick cables. Even at peak currents in the range of 200A or 300A, the fully protected current path remains stable and prevents dangerous voltage drops. Furthermore, the integrated inertia acts in such a way that short peaks, such as when switching on, do not immediately lead to tripping. This allows the Fuse to handle very high loads in car Hi-Fi operation without you having to constantly fear failures.

Can a slow-blow Fuse be used for sensitive car Hi-Fi systems, and how should it be optimally positioned?

Investing in a slow-blow Fuse pays off because it does not immediately counteract short-term inrush current pulses, thus protecting sensitive components from unnecessary interruptions. At the same time, it will trip safely as soon as the current exceeds the permissible level for an extended period. The optimal placement plays a crucial role, with the solid, waterproof housing being key: choose a location close to the power source to keep wiring lengths as short as possible. However, the Four Connect automatic Fuse can also be installed in other sections of the vehicle, as long as there is no risk of direct water contact or vibration-related cable breakage. This way, you enjoy maximum protection while ensuring reliable performance.

How robust is the Four Connect automatic fuse against sudden power surges?

The slow tripping characteristic prevents unwanted shutdowns during short-term high inrush currents, such as those that can occur when switching on large digital amplifiers or similar devices. The robust interior relies on a mechanism that is resistant to shocks, ensuring reliable performance in mobile applications. Additionally, the tight housing ensures that environmental factors like moisture or road dirt do not impair functionality. As a result, the fuse can withstand adverse conditions almost effortlessly. In combination with the hex bolts designed for high cable cross-sections, the electrical connection remains stable even during repeated power surges. This way, the audio system is always ready to perform at any volume level.

What role do the adapter sleeves play in cable fastening?

The included cable sleeves allow you to screw in smaller cross-sections, such as 20 mm², into the same connection points instead of only using extremely thick cables of 50 mm². This enables you to modularly expand your car audio system without needing separate fuse assemblies. This covers a variety of use cases, for example, when you are only operating a moderately powerful amplifier but still need room for future upgrades. The Four Connect automatic fuse can thus be flexibly integrated into different power concepts. The adapter sleeves also ensure a stable hold by fitting snugly around the inner conductors and evenly distributing the clamping pressure of the hex bolts.

Manufacturer information/responsible person

Audio Import Group
Pekka Kinnunen
Palkkitie 10
84100 Ylivieska
Finland

Contact: info@audioimport.fi

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