5HT 2.5

Package / Case:	5mm x 20mm
DC Cold Resistance:	0.05 Ohms
Size / Dimension:	0.201" Dia x 0.787" L (5.10mm x 20.00mm)
Color:	--
Operating Temperature:	-55°C ~ 125°C
Approvals:	CCC, CE, CSA, IMQ, PSE, SEMKO, UL, VDE
Melting I²t:	17.4
Breaking Capacity @ Rated Voltage:	1.5kA
Mounting Type:	Holder
Series:	5HT
Response Time:	Slow
Voltage Rating - AC:	250V
Current Rating:	2.5A
Fuse Type:	Cartridge, Ceramic
Part Status:	Obsolete
Lead Free Status / RoHS Status:	--
Packaging:	Bulk

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Introduction

A 5HT 2.5 fuse, commonly known as a high-temperature fuse, is an electrical device designed to safely protect electrical circuits from overload or short circuit conditions. It is designed to disconnect the circuit when a pre-set electrical current is exceeded. The fuses are constructed with a metal fragment that melts under excess temperature to separate the main current line. The melting of the fragment triggers a switch that breaks the circuit, thus providing a safe disconnection if the current it defined to be exceeded.

Application Fields

High temperature fuses are used in a variety of applications where excessive heat is expected, such as in electrical circuits with high temperatures, motors, appliances, and components used in heavy-duty industrial machinery. They are often installed in series with the circuit they are intended to protect. Their size can vary depending on the application and size of the circuit, and the fuse’s design can also vary depending on the particular application. When used in combination with thermal cutout devices, 5HT 2.5 fuses are ideal for applications involving extremely high temperatures, such as motors for vehicle engines, HVAC systems, and ovens. For example, by installing a 5HT 2.5 fuse in combination with a thermal cutout device, the motor will be protected from overload conditions that can cause excessive current to flow through the motor, potentially leading to a fire.

Working Principle

The 5HT 2.5 fuse relies on a metal fragment that is designed to melt when the pre-set electrical current is exceeded. When the metal fragment melts, a switch is triggered that breaks the circuit, thus providing a safe disconnection.The current rating of the fuse is determined by the size of the metal fragment, and this determines the maximum current that the fuse can carry safely. If the current is higher than the rated level, then the metal fragment will melt, thus tripping the switch and disconnecting the circuit.

Conclusion

5HT 2.5 fuses are an essential safety device, designed to protect electrical circuits from overload or short circuit conditions. They have a wide range of applications, including motor and HVAC systems, and they are ideal for high temperature applications due to their combination with thermal cutout devices. Their working principle relies on the melting of a metal fragment under excessive temperatures, tripping the switch and disconnecting the circuit.

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