KTK-15 BUSSMANN FUSE

KTK-15 BUSSMANN FUSE

KTK-15 BUSSMANN FUSE – Industrial 15A 600VAC Fast-Acting Midget Supplemental Fuse

The KTK-15 BUSSMANN FUSE (Model KTK-15) is an industrial-grade, fast-acting midget supplemental fuse manufactured by Eaton’s Bussmann series. Engineered specifically for high-voltage industrial control circuits, lighting systems, solar inverters, and power equipment, this 15-amp, 600VAC LIMITRON™ fuse delivers reliable fast-acting overcurrent and short-circuit protection in a compact ferrule footprint.

Featuring a standardized 13/32” times 1-1/2” (10mm x 38mm) physical dimension, the KTK-15 BUSSMANN FUSE provides superior electrical safety with an interrupting rating of 100kA RMS Symmetrical at 600 VAC. Designed for circuits with high available short-circuit currents where space is at a premium, it clears short circuits rapidly to protect sensitive downstream components—such as control transformers, solenoids, and electronic printed circuit boards—from thermal damage and high-energy fault conditions.

Key Features of the KTK-15 BUSSMANN FUSE

• Fast-Acting Overcurrent Protection: Responds rapidly to short circuits and high overload currents, isolating faults before downstream electronic circuits sustain damage.

• Compact Midget Form Factor: Industry-standard 13/32” x 1-1/2” (10.3mm x 38.1 mm) body dimension fits standard midget fuse blocks, inline holders, and finger-safe panel mounts.

• High 100kA Interrupting Rating: Fully rated to interrupt fault currents up to 100kA RMS Symmetrical at 600VAC, ensuring safety compliance in high-capacity electrical panels.

• High-Grade Melamine Tube Construction: Built with a durable melamine body that provides exceptional dimensional stability and high thermal endurance during fault clearing.

• Nickel-Plated End Caps: Solid brass ferrule end caps with corrosion-resistant nickel plating ensure low contact resistance and long-term connection reliability.

• UL Supplemental Protection: Meets UL 248-14 standards as a supplemental fuse for localized circuit protection inside control enclosures and electrical machinery.

Common Applications and Practical Usage

The rapid clearing speed and high 600 V rating of the KTK-15 BUSSMANN FUSE make it a versatile choice across industrial, commercial, and OEM applications:

• Control Transformer Circuit Protection: Guards primary and secondary circuits of control transformers against short circuits.

• Industrial Control Panels (HVAC & Machinery): Ideal for protecting solenoids, relays, contactor coils, and pilot light circuits inside industrial switchgear.

• Lighting Ballasts & Power Distribution: Provides localized branch overcurrent protection for commercial fixture ballasts and non-inductive loads.

• Solar Inverters & Power Supplies: Protects auxiliary circuits and power distribution components in solar PV combiner boxes and industrial DC/AC supplies.

Technical Specifications

The core electrical, physical, and compliance parameters for the KTK-15 BUSSMANN FUSE are detailed below:

Operating Guidelines and Usage Tips

SAFETY NOTICE: Always isolate power sources and verify circuits are fully de-energized using a calibrated voltage tester prior to inspecting or replacing power fuses.

• Holder Compatibility: Always pair with UL-rated 13/32” x 1-1/2” midget fuse blocks or DIN-rail mounted finger-safe holders (such as Bussmann CHM series holders).

• Inductive Load Precaution: Because KTK fuses are fast-acting, avoid using them on motor loads with high starting inrush currents unless appropriately sized, as startup surges can cause nuisance opening. For high-inrush motor loads, consider time-delay equivalents like the FSN or FNQ series.

To review official supplemental midget fuse standards and control circuit protection criteria, consult the National Electrical Manufacturers Association (NEMA) Directory.

To check regional warehouse inventory availability or request commercial quotes for volume electrical fuses, visit the Control Qatar Contact Page.