LA130URD71LLI0400

Applications:	Electrical, Industrial
Melting I²t:	38
Size / Dimension:	2.854" L x 2.008" W x 2.206" H (72.50mm x 51.00mm x 56.03mm)
Package / Case:	Rectangular, Blade
Mounting Type:	Bolt Mount
Breaking Capacity @ Rated Voltage:	100kA
Operating Temperature:	--
Approvals:	UR
Class:	--
Features:	--
Series:	POWR-GARD® LA
Response Time:	Fast
Voltage Rating - AC:	1.3kV
Current Rating:	400A
Fuse Type:	Square
Moisture Sensitivity Level (MSL):	--
Part Status:	Active
Lead Free Status / RoHS Status:	--
Packaging:	Bulk

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LA130URD71LLI0400 Application Field and Working Principle

Electrical, Specialty Fuses that work in voltages of 230V are commonly used in electrical systems to protect electrical components and wiring from overcurrent. The LA130URD71LLI0400 is a high amperage, slow-blow, two-pole fuse that is designed to provide reliable overcurrent protection. This fuse is designed for applications that require frequent and repeated operation. It is particularly suitable in applications with high-inrush currents, such as motors, transformers, and solenoids.The LA130URD71LLI0400 fuse offers an excellent compromise between rupture capacity and time lag. It is designed to open during a large overload (heavy current), yet remain in a safe condition (closed) during the operation of electrical equipment. It has a high current rating to ensure rapid clearing of short circuits, protection against overloads, and protection of wiring and components.The body of the fuse is made of a plastic material that is both heat resistant and flame retardant. Inside the body is a bimetallic strip that is designed to expand and separate from the two contacts when the current threshold is exceeded. A reactance bridge is used to provide a wide heat activation range, and the fuses are de-rated to ensure a current-limiting action. The time lag of this fuse is so fast that many types of surges can be safely withstood.In applications where the amount of current to be protected is known, the fuse can be sized accordingly. Generally speaking, the higher the wattage of the load, the higher the amperage of the fuse should be. It is also essential to be sure that the amperage and voltage ratings of the fuse are compatible with those of the electrical system.When working with the LA130URD71LLI0400 fuse, it is important to remember to always disconnect the circuit from the source of power prior to removing or attempting to replace the fuse. For safety purposes, the fuse must be the correct size and not be tampered with in any way. Any attempts to use it in an application for which it is not approved may present a danger to persons or equipment, and may not provide adequate protection.In summary, the LA130URD71LLI0400 fuse is designed for applications that require high amperage, repeated use, and high short-circuit current interrupting capabilities. This type of fuse is designed to open quickly during a large overload, while remaining in a safe condition during the operation of the electrical system. To ensure proper protection and safety, it is important to size the fuse appropriately and disconnect the power prior to replacing or removing it.

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