KTK-20 FAST ACTING FUSE BUSSMANN

KTK-20 FAST ACTING FUSE BUSSMANN

KTK-20 FAST ACTING FUSE BUSSMANN – Industrial 20A 600VAC Supplementary Fast-Acting Fuse

The KTK-20 FAST ACTING FUSE BUSSMANN (Model KTK-20) is a high-performance, industrial-grade supplementary fuse manufactured by Eaton’s Bussmann series. Engineered specifically to deliver fast-acting overcurrent and short-circuit protection for control circuits, lighting loads, meter loops, and industrial machinery, this 20-amp, 600 VAC LIMITRON™ midget fuse provides precise, high-speed interruption across commercial and industrial electrical panels.

Featuring a fast-acting thermal response profile, the KTK-20 FAST ACTING FUSE BUSSMANN opens rapidly under overload and fault conditions to safeguard sensitive control components and electrical wiring. It provides an interrupting rating of 100 kA RMS Symmetrical at 600 VAC. Constructed in a compact, standardized midget ferrule body format (13/32” x 1-1/2” / 10.3 x 38.1 mm), this fuse fits into standard midget fuse blocks, inline holders, and finger-safe DIN-rail modular fuse holders.

Key Features of the KTK-20 FAST ACTING FUSE BUSSMANN

• Fast-Acting Overcurrent Response: Responds rapidly to short-circuit faults and overloads, minimizing thermal and magnetic stress on protected downstream devices.

• High 600 VAC Voltage Rating: Designed for continuous operational duty in high-voltage industrial control circuits up to 600 VAC.

• 100kA Interrupting Capacity: Rated to safely interrupt prospective fault currents up to 100 kA RMS Symmetrical at 600 VAC.

• Compact Midget Form Factor: Standardized 13/32 inch x 1-1/2 inch (10.3 x 38.1 mm) dimensions enable space-saving installation in dense control panels.

• Durable Melamine Construction: Built with a high-strength melamine tube casing filled with silica sand to efficiently quench internal arcing during severe faults.

• Cost-Effective Circuit Protection: Delivers economical, reliable supplementary protection for non-inductive loads and control systems.

Common Applications and Practical Usage

The fast response speed, 20A rating, and compact ferrule footprint of the KTK-20 FAST ACTING FUSE BUSSMANN make it a preferred choice across industrial panel designs:

• Control Transformer Secondary Protection: Safeguards control circuits and control transformer secondary outputs against short circuits.

• Industrial Control Panels: Provides supplementary protection for solenoids, relays, contactor coils, and pilot lights.

• Lighting Branch Circuits: Protects non-inductive lighting circuits and industrial fluorescent or LED panel supply feeds.

• Meter Loops & Instrumentation: Isolates measuring equipment, monitoring circuits, and control instrumentation in distribution equipment.

Technical Specifications

The core electrical, physical, and compliance specifications for the KTK-20 FAST ACTING FUSE BUSSMANN are detailed below:

Operating Guidelines and Usage Tips

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

• Holder Compatibility: Install in standard 13/32” x 1-1/2” midget fuse blocks (such as Bussmann BMM series) or finger-safe DIN-rail holders (such as Bussmann CHM series).

• Application Note: For circuits with high motor inrush or high transformer magnetizing currents, consider time-delay midget fuses (such as Bussmann FNQ series) to prevent nuisance opening during startup surges.

To review official supplemental midget fuse standards and low-voltage protection specifications, 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.