8020.0518.PT

Response Time:	Slow
Size / Dimension:	0.154" Dia x 0.433" L (3.90mm x 11.00mm)
Color:	--
Operating Temperature:	-20°C ~ 70°C
Approvals:	cURus
Melting I²t:	66
Breaking Capacity @ Rated Voltage:	35A
Mounting Type:	Through Hole
Package / Case:	Cartridge, Non-Standard (Axial)
Series:	SPT 3.6x10
Voltage Rating - AC:	250V
Current Rating:	2.5A
Fuse Type:	Cartridge, Ceramic
Moisture Sensitivity Level (MSL):	--
Part Status:	Active
Lead Free Status / RoHS Status:	--
Packaging:	Bulk

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Introduction to 8020.0518.PT Application Field and Working Principle of Fuses

Fuses are electronic components used to protect an electrical circuit from overvoltage, overcurrent, or short circuit. They can be used in circuits for both AC or DC supply. The 8020.0518.PT fuses are particularly well suited for switchgear applications due to their ability to self-trip even in the case of installed capacitor banks that may cause unstable currents and potential arcs.

Construction and Operating Principle of 8020.0518.PT Fuses

The 8020.0518.PT fuse is a current operated device and utilizes an electromagnetic circuit breaker with a capacitor. Its case is made of high-impact resistant polycarbonate and other materials and it fits into a standard DIN-rail slot. It contains one series of trip contacts plus a voltage-controlled SHUNT element. When a fault occurs in the system that is being protected by the 8020.0518.PT, it trips in three stages of increasing current. The current rating of the fuse is determined by the size of the overcurrent current setting. The first stage is called the overflux stage and has a threshold current setting of 12 Amps. If the current exceeds this level, then the magnetic field generated by the coil will cause the contacts to trip, thus disconnecting the circuit. The second stage, also known as the overvoltage stage, occurs when a current trip current setting of 24 Amps is exceeded and the contacts trip again, disconnecting the circuit. Finally, when a current trip current setting of 36 Amps is exceeded, the contacts trip for the third time, once again disconnecting the circuit.

Advantages of 8020.0518.PT Fuses

There are several distinct advantages that the 8020.0518.PT fuse provides when compared to traditional fuses. Firstly, due to their compact design, they are much easier to install than traditional fuses and require less space. Additionally, they are UL rated, which means they are safe to use for a variety of different voltages and designs. Finally, the 8020.0518.PT fuse is designed to have a fast response time, meaning that when it trips, it will be done quickly and efficiently.

Conclusion

The 8020.0518.PT fuses have been designed to offer an effective and efficient solution for protecting electrical circuits from overvoltage, overcurrent, and short circuit. Their design takes advantage of a series of trip contacts and a voltage-controlled SHUNT element to quickly disconnect the circuit in the event of a fault. Additionally, they are UL rated, providing assurance that they are safe for use in the switchgear circuit and come with a compact design, allowing for easy installation.

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