KTK-R-30 BUSSMANN FUSE

KTK-R-30 BUSSMANN FUSE

KTK-R-30 BUSSMANN FUSE – High-Performance 30A 600VAC Class CC Current-Limiting Fuse

The KTK-R-30 BUSSMANN FUSE (Model KTK-R-30) is an industrial-grade, fast-acting Class CC rejection-type fuse manufactured by Eaton’s Bussmann series. Engineered for maximum current limitation and rapid short-circuit response, this 30-amp, 600 VAC LIMITRON™ fuse provides high-level electrical protection for critical branch circuits, control transformers, lighting circuits, and industrial machinery.

Designed with a high interrupting rating (IR) of 200kA RMS Symmetrical at 600VAC, the KTK-R-30 BUSSMANN FUSE responds up to 10 x faster than basic circuit breakers or standard fuses to prevent severe equipment damage from short-circuit fault events. Its compact 13/32” x 1-1/2” (10.3mm x 38.1mm) rejection-style body ensures that lower-rated supplementary fuses cannot be mistakenly installed in Class CC fuse blocks, maintaining strict safety compliance across commercial and industrial facilities.

As shown in the image, the fuse features a durable melamine body labeled with the “Bussmann LIMITRON™ Current Limiting Fast-Acting Class CC Fuse KTK-R-30 600Vac” rating, capped with nickel-plated bronze ferrule end caps featuring the Class CC rejection tip.

Key Features of the KTK-R-30 BUSSMANN FUSE

• Advanced Current Limitation: Offers up to 10X faster short-circuit protection compared to standard circuit protection devices, limiting peak let-through current to protect downstream equipment.

• High 200kA Interrupting Rating: Fully complies with NEC® Section 110.9 requirements for modern, large-capacity electrical power distribution systems.

• Class CC Rejection Feature: Features a physical rejection grooved tip that prevents the installation of lower-rated supplementary fuses into Class CC fuse blocks and holders.

• Fast-Acting Response: Opens within cycles of encountering massive current overloads or short circuits, preventing electrical fires and component breakdown.

• Durable Construction: Built with a high-grade melamine body housing a single-element link and nickel-plated end caps for high thermal stability and corrosion resistance.

• Standard Industrial Form Factor: Fits standard 1-pole, 2-pole, and 3-pole Class CC modular DIN-rail holders, open blocks, and panel-mount fuse holders.

Common Applications and Practical Usage

The heavy-duty protection capabilities of the KTK-R-30 BUSSMANN FUSE make it a essential component across industrial automation and power infrastructure:

• Branch Circuit Protection: Provides primary short-circuit and overload protection for dedicated industrial branch circuits.

• Control Transformer Circuit Protection: Guards sensitive primary and secondary control transformers from sudden overcurrent spikes.

• Industrial Control Panels (PLCs & Relays): Protects PLCs, contactors, motor control centers (MCCs), and relay boards from fault currents.

• Street Lighting & Commercial Fixtures: Utilized in in-line lighting fuse holders for street lighting and outdoor commercial LED driver setups.

Technical Specifications

The core operational, physical, and safety parameters for the KTK-R-30 BUSSMANN FUSE are detailed below:

Operating Guidelines and Usage Tips

SAFETY NOTICE: Always de-energize the electrical circuit before inspecting or replacing industrial fuses. Use proper personal protective equipment (PPE) and insulated fuse pullers.

• Holder Compatibility: Ensure you pair the fuse with compatible UL Class CC rejection fuse blocks (such as Bussmann BC series blocks or CHCC DIN-rail holders) to ensure safety keying.

• Correct Amperage Matching: Verify that the continuous operating load does not exceed 80% of t he 30A rating for continuous branch circuit installations per NEC guidelines.

To review official Class CC current-limiting fuse standard specifications and electrical code requirements, 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.