170M8617

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

Fuses are critical components of electrical protection and safety systems, used to protect circuits from damage due to overload currents or short circuits. Fuses have evolved over time and come in various types and sizes. The 170M8617 is a specialty fuse manufactured by Littelfuse, and it is designed for demanding applications. This article will explain the application field and working principle of the 170M8617.

Applications

The 170M8617 is a “fast-acting” fuse, designed for higher interrupting capacity and higher current ratings than standard fuses. It is listed as having a current rating from 8 to 50 amperes, and an interrupting rating of 18 kiloamps minimum at DC voltage levels. It is mainly used in automotive applications such as DC/DC power converters and FETs used to control internal computer systems, as well as in applications such as airbag control modules, charging systems, electronic control units (ECUs), and fuel injectors. The 170M8617 is an ideal fuse for such applications due to its high current ratings and wide operating temperature range of -40°C to 125°C.

Design

The 170M8617 fuse is a sealed fuse featuring a glass body and a metal top cap crimped onto the body with an epoxy seal. It is designed to fit into standard “mini-SP” (miniature circuit protection) fuseholders, as well as most high-temperature blade-type automotive fuseholders. The mini-SP fuseholder is ideal for printed circuit board (PCB) designs due to its low profile, while the blade type fuseholder is designed to fit into fuse block cavities. The 170M8617 also features a high-temperature holder with a temperature rating up to 125°C. The fuse operates with an inline spark gap to quickly protect circuits from over-current conditions.

Operation

The 170M8617 fuse is an fast-acting fuse, which means it responds quickly to an overcurrent condition. It operates by using an inline spark gap across the internal coil of the fuse, which provides a low-resistance to current and ensures rapid reaction to short-circuits and overloaded circuits. When too much current flows through the fuse, the spark gap creates a spark between the contacts, effectively breaking the circuit and protecting the electrical system from damage. The fast-acting design of the fuse helps to reduce the chances of circuit damage or fire due to an overload or short circuit.

Advantages

The 170M8617 fuse offers several advantages over other types of fuses. It is designed for high current and high voltage applications, and can be used in a variety of automotive and other applications. The fast-acting design ensures quick reaction to overcurrent conditions, while the epoxy sealed construction and high-temperature holder ensure reliable protection. The 170M8617 also offers excellent environmental protection, as it is rated IP67 for dust and water ingress protection and is also resistant to vibration, shock, and mechanical stress.

Conclusion

The 170M8617 is a fast-acting fuse designed for high current ratings and high voltage applications. It is an ideal fuse for automotive applications such as DC/DC power converters and airbag control modules, and can also be used in other applications. The fuse features a glass body and metal top cap, an epoxy seal, and a high-temperature holder that ensures reliability in demanding environments. The fast-acting design of the fuse provides quick reaction to short circuits and protect circuits from damage, while the high-temperature holder and epoxy seal provide excellent environmental protection. The 170M8617 fuse offers reliable and safe circuit protection in a variety of applications.The specific data is subject to PDF, and the above content is for reference