170M5143

Applications:	Electrical, Industrial
Melting I²t:	34000
Size / Dimension:	3.150" L x 2.402" W x 2.953" H (80.00mm x 61.00mm x 75.00mm)
Package / Case:	Rectangular, Blade
Mounting Type:	Bolt Mount
Breaking Capacity @ Rated Voltage:	100kA
Operating Temperature:	--
Approvals:	CSA, UR
Class:	--
Features:	Indicating
Series:	--
Response Time:	--
Voltage Rating - AC:	1.3kV
Current Rating:	450A
Fuse Type:	Square
Moisture Sensitivity Level (MSL):	--
Part Status:	Active
Lead Free Status / RoHS Status:	--
Packaging:	Bulk

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Introduction

The 170M5143 is an electrical fuse designed and manufactured in the United States. This specialty fuse belongs to a category of protection devices that are designed to protect electrical systems from short circuits and other over current event. This device features a fast-acting design, making it perfect for larger loads that require a quick response to an unsafe over current event. It is also UL listed, meaning it has passed testing for safety and has met the criteria by Underwriters Laboratories.

Application Field

The 170M5143 is most often used in industrial applications where a surge of current must be quickly cut off to protect the system. This device can be used in a variety of applications where electrical safety is a priority. This device is best suited for low voltage circuits of up to 600 volts with a maximum current rating of 1500 amperes. Common applications of this type of fuse can include power systems, motor control systems, industrial automation systems, and other power control equipment.

Working Principle

The fuse’s primary purpose is to protect the circuit from short circuits and other dangerous electrical events. The 170M5143 works by utilizing a fusible metal strip (or a fuse element) that is heated and melted by the passage of an over current event. This melts the link and opens the circuit, thus preventing any further current from flowing which will protect the system from harm.The device consists of two parts: a body and a cap. The body houses the fuse element itself and the cap houses the linking elements. The body and cap are connected by an adapter or a holder which has current operating characteristics. When too much current flows through the circuit, the fuse element begins to heat up. This heat physically weakens the link between the two parts and eventually it breaks, interrupting the circuit and cutting off the over current.

Clamping Device

The 170M5143 also features a unique clamping device that helps prevent sparks and arcing from occurring during and after the switching off process. This is done by using a unique pressure activated stainless steel spring which is strong enough to clamp the parts together when the link breaks and the current is cut off, thus preventing the link from emitting any dangerous sparks.

Installation

When installing the device, it is important to make sure that it is wired correctly and securely. All connections must be tightly secured and insulated. It is also important to make sure that the fuse is rated correctly for the application. If the fuse is too weak then it may not be able to protect the circuit from a severe over current event and if the fuse is too strong then it will not correctly react to moderate current events which can also cause danger to the system.

Conclusion

The 170M5143 is an effective electrical safety device that is perfect for a variety of applications. It is UL listed, meaning it meets all safety criteria and has passed testing. It also features unique clamping and linking devices that ensure the system is safe and protected from sparks and arcing. Finally, it is important to make sure the fuse is correctly rated and correctly wired before installation.

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