Airlab Self Resetting Fuse

Airlab Self Resetting Fuse

  • £19.79

Fuses are made to order, currently with a lead time of 7-10 days before shipping. However during busy periods there may be delays. Airlab cannot make guarantees as to how long orders containing made to order products will take to ship, or to arrive (unless specifically stated otherwise via direct communication with customers). We do work our hardest to get orders out as soon as possible.

If you need anything urgently, please get in touch before ordering to see if we can meet your requirements.

A self-resetting fuse, supplied with red 16AWG wiring and heavy-duty heatshrink. Once soldered into your gun it provides several advantages over the stock fuse which it replaces:

  • Automatically resets after a fault so you don't have to worry about replacing it, ever.
  • Reduces electrical resistance, improving electrical efficiency.
  • Protects your gun's internal components if a fault occurs.
Made by Airlab in the UK.

    This self-resetting fuse works just like a normal fuse, so it will trip in the event of excessive current draw, which can be caused by a mechanical or electrical fault. Once it trips, it prevents current from flowing thus protecting everything else in the gun, including the battery, electronics, motor and gearbox internals. An upgraded airsoft gun is a significant investment of your time and money, which this simple fuse is designed to reliably safeguard.

    Upgraded guns naturally draw more current so you should select a 36A or 48A trip current to make sure the fuse allows enough current through to power your gun.

    Click here for installation instructions.

    More information on how it works:

    Automatically resets

    These fuses employ an engineering technique which dramatically increases electrical resistance as the temperature rises, preventing any significant current flowing. They are made from a non-conductive polymer which is mixed with conductive particles. At room temperature the polymer is fairly dense, so that the conductive particles are close together, allowing electricity to easily flow.

    If the current exceeds the fuses rated trip current, the polymer is designed to quickly heat up and expand. This expansion forces the conductive particles further apart, breaking almost al of the electrical connections between them. A small amount of current will continue to flow, to ensure that the temperature stays high enough to keep the fuse tripped. Once electricity is cut off (for example by releasing the trigger), the fuse will start to cool down. After a few seconds the fuse will contract back to its normal state, allowing current to flow again. If the fault has been fixed, normal operation can resume.

    Reduces resistance

    Because this fuse doesn't need replacing, it can be permanently soldered into your gun's wiring system. Soldered joints provide a better electrical connection than simple mechanical joints. This allows the electrons to flow across the joint more easily, reducing resistance. A lower overall resistance makes your gun's electrical system more efficient. This means that more of the energy from your battery goes to firing your gun, rather than heating up the wires and components.

    Protects the rest of your gun

    When a fault occurs in an AEG, it can have a knock-on effect resulting in serious damage to other components if the gun continues to be fired. The best thing you can do if you notice a problem is to release the trigger, disconnect the battery and inspect the gun. However sometimes the fault is not obvious, or there is a problem with the electric circuit (e.g. a short circuit) which keeps current flowing. In these situations, a fuse can often protect any number of internal components. LiPo batteries can fail violently under a short circuit, becoming a dangerous source of heat and smoke. Having a fuse in the system will stop the flow of electricity, preventing the knock-on effect that can destroy several components all at once.

    Full installation instructions are available here.

    Learn more about resetting fuses on Wikipedia.