KLU-4000

Applications:	Electrical, Industrial
Size / Dimension:	5.750" Dia x 3.750" L (146.05mm x 95.25mm)
Package / Case:	Cylindrical, Blade Terminal (Bolt)
Mounting Type:	Bolt Mount
Breaking Capacity @ Rated Voltage:	200kA
Operating Temperature:	--
Approvals:	CE, CSA, UL
Class:	L
Features:	--
Series:	Limitron™ KLU
Response Time:	Slow
Voltage Rating - AC:	600V
Current Rating:	4kA
Fuse Type:	Cartridge
Moisture Sensitivity Level (MSL):	--
Part Status:	Active
Lead Free Status / RoHS Status:	--
Packaging:	Bulk

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KLU-4000 Application Field and Working PrincipleKLU-4000 series of high-speed fuses are available in a wide variety of fuse ratings from 24 to 1200 amps. They are used to protect high power AC and DC circuits, where a fast response to overload or short circuit current is required. KLU-4000s are typically used in protective relays, circuit breakers, distribution boxes, switchgear, transformers, and other high-power electrical components. The KLU-4000 series of fuses are UL/C-UL Listed and CE marked.The KLU-4000 is designed to safely open a circuit when the current reaches its rated breaking capacity. When the fuse is activated, it generates an electrical arc that fractures the link between the live and neutral terminals. This disrupted link reduces the electrical power travelling through the circuit, ensuring no further damage is caused.This advanced technology makes the KLU-4000 series of fuses ideal for applications that require precise current protection. The fuse has a high breaking capacity and fast response time, while also being safe and reliable.The KLU-4000 fuse is composed of two components: the fuse blade and fuse link. The blade is made from a copper alloy, which has two main benefits - the copper\'s excellent conductivity and the alloy\'s mechanical strength. The fuse link is made from a special amalgam of metals that provide the thermal and electrical properties used to create the fuse. When an overload occurs, the temperature of the fuse link rises, due to the increased resistance of the circuit. This increased temperature will cause the link to expand, breaking the link between the live and neutral terminals. The link will then dissolve, allowing the electrical arc to pass from the fuse blade to the fuse link. The arc then produces enough heat to evaporate the link, resulting in an immediate interruption of the circuit. The KLU-4000 fuse is also designed to auto-reset itself in the event of an overload. Once the overload condition has been corrected, the fuse link will re-solidify and shrink back to its original form, allowing power to flow back through the circuit. This prevents further damage to the circuit by providing a fast and reliable way to reset after an overload. The KLU-4000 fuse offers a variety of features that make it suitable for many different applications. It is UL/C-UL Listed and CE marked, meaning it meets safety and performance standards in both the US and Europe. Additionally, the fuse automatically resets itself, preventing any further damage to the circuit due to prolonged overloads. Finally, the fast response time and breaking capacity makes it an ideal choice for protecting high power AC and DC circuits. In conclusion, the KLU-4000 series of high-speed fuses provide reliable and safe protection for many electrical components and circuits. With their UL/C-UL Listed and CE marked design, they are suitable for use in a wide variety of applications. The fuse\'s fast response time and high breaking capacity makes it an ideal choice for protecting high power AC and DC circuits.

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