Bussmann Fusetron Dual-Element Class Rk5 Fuses - 40AMP 600VAC

SKU: 40AMP600VAC

This is a variant of Bussmann Fusetron Dual-Element Class Rk5 Fuses

Other Options

Bussmann Fusetron Dual-Element Class Rk5 Fuses - 100AMP 250VAC

100AMP250VAC

$30

Bussmann Fusetron Dual-Element Class Rk5 Fuses - 20AMP 250VAC

20AMP250VAC

Bussmann Fusetron Dual-Element Class Rk5 Fuses - 20AMP 600VAC

20AMP600VAC

$30

Bussmann Fusetron Dual-Element Class Rk5 Fuses - 30AMP 250VAC

30AMP250VAC

Bussmann Fusetron Dual-Element Class Rk5 Fuses - 30AMP 600VAC

30AMP600VAC

$30

Bussmann Fusetron Dual-Element Class Rk5 Fuses - 40AMP 250VAC

40AMP250VAC

Bussmann Fusetron Dual-Element Class Rk5 Fuses - 40AMP 600VAC

40AMP600VAC

$30

Bussmann Fusetron Dual-Element Class Rk5 Fuses - 50AMP 250VAC

50AMP250VAC

$30

Bussmann Fusetron Dual-Element Class Rk5 Fuses - 60AMP 250VAC

60AMP250VAC

$30

Bussmann Fusetron Dual-Element Class Rk5 Fuses - 70AMP 250VAC

70AMP250VAC

$30

High-performance Bussmann Fusetron Class RK5 fuses provide superior dual-element protection with a 200kA interrupting rating. Engineered for solar PV, battery storage, and motor circuits, these current-limiting fuses prevent unnecessary outages while safeguarding downstream components.

Product Overview

Powering Safety, Empowering Performance

Imagine a world where your electrical systems run smoothly, protected by a silent guardian that never sleeps. That's the peace of mind our 250 VAC/ 125 VDC Class R Fuse brings to your fingertips. This isn't just a fuse; it's your first line of defense against electrical chaos.

Key Features That Set Us ApartHigh Amp Interrupting Capacity (AIC): Perfect for battery-powered circuitsRejection Style Design: Eliminates replacement errors, keeping your systems safeFerrule Terminal Connection: Ensures a secure and reliable fitFiberglass Tube Construction: Durability meets performanceCurrent Limitation: Shields downstream components from high fault currentsTechnical Prowess Meets Practical Design

Our Class RK5 current limiting time delay fuses are engineered for excellence. With ratings of either 600VAC/300VDC or 250VAC/125VDC, these fuses are versatile powerhouses. The cylindrical, clip-mountable design isn't just about looks – it's about functionality. Overload Protection: Separate elements provide time delay for precise motor FLA sizingShort-Circuit Safeguard: Delivers exceptional protection when you need it most2:1 Selective Coordination: Prevents unnecessary upstream fuse openingsInsulated End Caps: Enhanced safety for 225A-600A fusesWhere Innovation Meets Application

From bustling factories to cutting-edge solar farms, our fuses find their home in:Electrical SystemsSolar PV InstallationsBattery Energy Storage SystemsWhether you're powering a motor control center or safeguarding a machinery disconnect switch, our fuse is your trusted companion.

Why Choose Our Class R Fuse?Unmatched Reliability: UL listed, CE marked, and CSA certifiedVersatility: Ideal for power panel boards and combination startersEnhanced Safety: Insulated end caps reduce exposure to live partsSuperior Performance: Excellent overload and cycling capabilitiesReady to Elevate Your Electrical Protection?

Don't let electrical faults keep you up at night. Embrace the power of our 250 VAC/ 125 VDC Class R Fuse and experience peace of mind like never before.

Images are for illustration only and may not be an exact representation of the product

Frequently Asked Questions

What is the difference between FRN-R and FRS-R Bussmann fuses?+

The primary difference is the voltage rating. FRN-R fuses are rated for up to 250VAC and 125VDC, while FRS-R fuses are rated for up to 600VAC and 300VDC. Both are Class RK5 dual-element, time-delay fuses.

Why use a dual-element time-delay fuse for solar inverters or motors?+

Dual-element fuses feature a 10-second time delay at 500% of the rated current. This allows them to handle temporary surges and inrush currents common during motor startups or solar inverter synchronization without blowing, while still providing high-speed short-circuit protection.

What does the 'rejection style' design mean?+

The 'R' in Class RK5 stands for rejection. These fuses have a physical groove in the end cap or blade that allows them to fit into Class R fuse clips. This prevents the accidental installation of older, non-current-limiting Class H or K fuses into circuits that require the high interrupting capacity of a Class R fuse.

Are these fuses suitable for Battery Energy Storage Systems (BESS)?+

Yes, with high Amp Interrupting Capacity (AIC) ratings and DC voltage listings (125VDC for FRN-R and 300VDC for FRS-R), these fuses are commonly used to protect battery banks and DC power distribution circuits in solar storage applications.

Ready to order?

Request Quote 978-451-6890