0031.8517

Series:	OGN-SMD
Packaging:	Tape & Reel (TR)
Lead Free Status / RoHS Status:	--
Part Status:	Active
Fuse Type:	Cartridge, Glass
Current Rating:	2.5A
Voltage Rating - AC:	250V
Response Time:	Fast
Package / Case:	5mm x 20mm w/Holder
Mounting Type:	Holder, Surface Mount
Breaking Capacity @ Rated Voltage:	35A
Melting I²t:	258
Approvals:	cURus, VDE
Operating Temperature:	-40°C ~ 85°C
Color:	--
Size / Dimension:	0.197" Dia x 0.787" L (5.00mm x 20.00mm)

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Fuses

Fuses are electrical protection devices designed to react to an overload condition and shut off the circuit. They are favored for their low cost, low maintenance, and ease of installation compared to a circuit breaker. 0031.8517 is one type of fuse designed for automotive applications that offer high current protection and superior performance.

Application Field

The 0031.8517 is a medium-time delay fuse used in automotive circuits requiring current-limiting protection up to 40 amps. It is commonly used on the electrical circuits of modern gas and diesel vehicle engines, such as those found in cars, motorcycles, recreational vehicle (RV), boat, and agricultural equipment. It can also offer protection in other applications, such as computer equipment, industrial control circuitry, recreational vehicles, battery chargers, and many other applications requiring their particular features and performance characteristics.

Working Principle

The 0031.8517 fuse works by utilizing a specially-made cylindrical element made of an alloy of copper and zinc, which has a lower melting point than copper or zinc alone. This element, in combination with a small amount of silver is pressed into a thin ribbon and placed in a metal casing such as brass or nickel. When an overload is present, the voltage across the element increases until the element melts, breaking the circuit. The primary benefits of the 0031.8517 are a high current rating of up to 40 amps in a small size, a medium-time delay of 250 millisecond or more, and excellent protection against short-circuit currents. The fuse also includes a protective cap, which makes it water resistant and protects it from dust and dirt. This is important in automotive applications, where water, dust, and dirt can be a problem. In addition, the 0031.8517 also features a dual-action design, which means that it is both temperature-sensitive and current-sensitive. This allows the device to respond more quickly and accurately to overloads, ensuring that the circuit is quickly and safely cut off. The temperature-sensitivity of the fuse also ensures that the fuse does not trip during normal operation, as the high current rating ensures that the fuse takes some time to trip. This ensures that no nuisance trips are experienced in the event of a minor overload. Overall, the 0031.8517 is an excellent, reliable, and cost-effective protection solution for automotive circuits. It is designed to provide reliable protection against overloads and short-circuits, while also taking up minimal space and providing great value for money.

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