KTU-2500

Applications:	Electrical, Industrial
Size / Dimension:	5.000" Dia x 3.750" L (127.00mm 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™ KTU
Response Time:	Fast
Voltage Rating - AC:	600V
Current Rating:	2.5kA
Fuse Type:	Cartridge
Moisture Sensitivity Level (MSL):	--
Part Status:	Active
Lead Free Status / RoHS Status:	--
Packaging:	Bulk

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KTU-2500 Application Field and Working Principle

Introduction

The KTU-2500 is a specialty fuse developed by Kanson Electrical Design and Manufacturing Company for use in electronic equipment, specifically in applications involving electrical protection from short circuiting. The product is used in a variety of industrial and commercial settings. Due to its Safe/Low Profile and Reliability ratings, the KTU-2500 is suitable for a wide range of applications in areas ranging from consumer electronics to medical/industrial.

Application Fields

The KTU-2500 is primarily designed for use in equipment used by hospitals, military, printing presses, test equipment, precision instruments, garage door openers, automotive, oil and gas, and appliance manufactures. Its high-end features and safe/low profile make it ideal for systems in need of higher heat ratings and physical protection than provided by standard open-style fuses.

Physical Characteristics

The KTU-2500 is approximately 3/8” in diameter and stands 0.5” tall. It is a snap-in style, cylindrical type fuse with a small amount of slack in the wire lead which makes it suitable for many turns-per-inch mounting applications. Its two UL-certified wire leads are designed for 14-gauge to 18-gauge wire, and the leads/wires are rated for 200˚C with an Insulation System of ETI. It also has a 2-piece construction, allowing the end caps to be snapped into place for easy installation and break-away features. Additionally, the fuse is rated for a voltage of 250VAC with an interrupting rating of 5.5 kilovolts.

Agency Certification

The KTU-2500 is UL approved to UL 257, and CSA certified to C22.2 No. 250.20. It is also RoHS and REACH compliant and has an IPX7 rating to be used in damp/wet conditions.

Working Principle

The KTU-2500 works on the principle that heat generated by an electrical fault is converted into an open circuit in the fuse. This causes the current to stop flowing in the circuit and prevents further damage to components. The KTU-2500 has an advanced fast-acting design that is sensitive to over-currents. The wire leads are designed to handle higher temperatures and have a minimal amount of slag when heated. This allows for longer life time and better protection. The KTU-2500 is also designed to self-reset when the fault condition is corrected. This allows the system to be easily reset without the need for an operator to manually replace the fuse. The reset feature is also designed to protect the system from further damage if an electrical fault persists for more than one cycle.

Conditions of Use

When using the KTU-2500, it is important to use the fuse properly and with the right conditions of use. The fuse cannot be used in a circuit with a voltage that is greater than the rated voltage for the fuse. Additionally, the total load current passing through the fuse must not exceed the current rating for the fuse or the maximum voltage rating. The fuse must also be mounted in the correct orientation and secured correctly to ensure the best operation. The fuse must be in a safe and ventilated area. Additionally, it is important to make sure that the fuse is not used in a high-vibration environment, as this could potentially cause damage to the fuse. Finally, it is important to regularly inspect and maintain the fuse to ensure it is working properly.

Conclusion

The KTU-2500 is a specialty fuse designed specifically for applications in areas requiring higher heat and physical protection due to its Safe/Low Profile and Reliability ratings. It has a variety of certifications, features snap-in construction, and is suitable for a wide range of applications. It has a voltage of 250VAC and an interrupting rating of 5.5 kilovolts. Additionally, it is designed to self-reset when the fault condition is corrected. It is important to use the fuse properly with the right conditions of use, and also regularly inspect and maintain the fuse for best performance. In conclusion, the KTU-2500 is an excellent specialty fuse option for applications needing high heat and physical protection while offering safe and reliable operation.

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