Bussmann FRN-R Class RK5 Dual-...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$31.59
Bussmann FRN-R Class RK5 Dual-Element Ferrule Fuse, 250V/125VDC

Bussmann FRN-R Class RK5 Dual-Element Ferrule Fuse, 250V/125VDC

(No reviews yet) Write a Review

Model: FRN-R-15ID

In Stock (leaves warehouse same day if ordered before 3pm ET)

$31.59
Adding to cart… The item has been added
Free Shipping on orders over $199
We price match and offer bulk discounts! Click Add to Quote. It's quick and easy.
✨
Earn points with this purchase! You can redeem points for giftcards, iPads, XBox's and more. View Rewards
Free Keying on all locks
You may also like

Bussmann FRN-R Class RK5 Dual-Element Ferrule Fuse, 250V/125VDC

The Bussmann FRN-R is an Eaton Bussmann Class RK5 dual-element fuse with ferrule end x ferrule end terminals, available in ratings from 8A to 60A (8A, 12A, 15A, 20A, 25A, 35A, 40A, 45A, 50A, 60A) to fit a wide range of branch-circuit and equipment protection needs. It carries a Standard 250 V / 125 Vdc voltage rating, a 10 sec at 500% time-delay characteristic, and high interrupting ratings of 20 kAIC at 125 Vdc and 200 kAIC at 250 V. The fuse is CE Marked and features an indicator for fast identification in the field, helping electricians and maintenance teams keep panels and equipment protected with a fuse style they already know and stock.

Key Features

  • Amp Rating Range: available across 10 ratings from 8A to 60A (8A, 12A, 15A, 20A, 25A, 35A, 40A, 45A, 50A, 60A) to match specific circuit protection requirements.
  • Dual-Element Class RK5 Construction: Class RK5 dual-element design for dependable overcurrent protection in demanding applications.
  • With Indicator: equipped with an indicator feature to help identify a blown fuse quickly.
  • Ferrule End x Ferrule End: ferrule-to-ferrule termination fits standard ferrule-style fuse clips and holders.
  • Time-Delay Response: rated 10 sec at 500% of rated current for tolerance of motor starting and inrush conditions.
  • High Interrupting Capacity: 20 kAIC at 125 Vdc and 200 kAIC at 250 V for reliable performance under high fault-current conditions.
  • Voltage Rating: Standard 250 V / 125 Vdc rated construction.

Certifications & Compliance

  • CE Marked

Technical Specifications

  • Compliances: CE Marked
  • Fuse Indicator: Non-indicating
  • Voltage Rating: 250 Vac, 125 Vdc

Typical Applications

  • Branch Circuit Protection
  • Motor and Motor-Control Circuit Protection
  • Panelboards and Disconnect Switches
  • Industrial and Commercial Electrical Distribution Equipment
  • OEM Equipment Overcurrent Protection

Why Bussmann?

Bussmann Class RK5 dual-element fuses are built for dependable, code-compliant overcurrent protection, backed by high interrupting ratings of 20 kAIC at 125 Vdc and 200 kAIC at 250 V and CE Marked compliance. The FRN-R series' dual-element, time-delay construction and ferrule end termination make it a proven choice for professional electrical installations that demand consistent, long-term protection, and the broad 8A-60A rating range means one trusted fuse family can cover multiple circuits across a facility.

Manufacturer Resources

Product Specs

Class:
Class RK5
Compliances:
CE Marked
Department:
Electrical
Packaging Type:
Standard
Fuse Indicator:
Non-indicating
Voltage Rating:
250V/125VDC
Number Of Elements:
Dual
Product Type:
Fuse
Series:
FRN-R
Amperage Rating:
8A-60A
Connection Type:
Ferrule End x Ferrule End
Standards:
CE Marked
Product Group:
Fuses
Product Subgroup:
Other Fuses

Bussmann FRN-R-15ID – Frequently Asked Questions

1) Will a Bussmann FRN-R fuse work in a 480V circuit?
No. The FRN-R is rated 250 Vac / 125 Vdc, so it can only be applied on systems at or below those voltages. For a 480V branch circuit you need a 600V class fuse, such as Bussmann's FRS-R, which is the 600V dual-element Class RK5 counterpart to the FRN-R.
2) Which amp ratings does the Bussmann FRN-R ferrule fuse come in?
Ten ratings cover 8A through 60A: 8, 12, 15, 20, 25, 35, 40, 45, 50 and 60 amps. Part numbers follow the amp rating, so a 30A slot in your panel is the one gap in the range here. Ferrule-body Class RK5 fuses stop at 60A; above that the same family switches to a blade (knife-blade) body.
3) Can I use an FRN-R on a motor circuit without nuisance blowing on startup?
That's what the dual-element construction is for. The FRN-R holds 500% of rated current for 10 seconds, which rides through motor locked-rotor inrush and transformer magnetizing current instead of opening on it. A single-element fast-acting fuse of the same amp rating would clear on the same start.
4) Can I swap a Class RK5 FRN-R in where a Class RK1 fuse is installed?
Physically yes, since RK1 and RK5 share the same dimensions and rejection features in a given amp and voltage rating. Electrically, check the equipment label first: RK5 lets through more energy than RK1, so if the panel or controller is marked for Class RK1 protection specifically, stay with RK1. Going the other direction, an RK1 will always fit where an RK5 is installed.
5) Will an FRN-R fit a standard Class H fuse block?
Yes on the block, with a caveat on the switch. FRN-R is a Class R fuse with ferrule ends, and Class R fuses drop into non-rejection Class H clips of the same 250V amp rating. The reverse is not true: if your disconnect has Class R rejection clips, a plain Class H renewable or one-time fuse will not seat, which is the point of the rejection feature.
6) Can I standardize a whole facility on FRN-R fuses for the 250V panels?
For 250 Vac and 125 Vdc equipment, yes, which is the usual reason maintenance shops stock this series. The ten ratings from 8A to 60A cover branch circuits, motor and motor-control circuits, panelboards, disconnect switches and OEM equipment, all with the same ferrule body and Class RK5 dimensions, so one drawer of fuses and one holder type serves the lot. Anything on 480V needs a separate 600V series.
7) What is the part number for a 20 amp Bussmann FRN-R?
The 20 amp version is FRN-R-20ID. The series numbers this way throughout, so a 45 amp is FRN-R-45ID and a 60 amp is FRN-R-60ID. Order by the amp rating on the equipment nameplate or the existing fuse, not by the holder size.
8) What compliance marking does the Bussmann FRN-R carry?
The FRN-R fuse is CE Marked. That is the marking stated for the series across the 8A to 60A range.
How fast can I get the Bussmann FRN-R-15ID delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the continental U.S. Need it urgently? Contact Us for expedited shipping options.
Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit, reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the Bussmann FRN-R-15ID come with a warranty?
Absolutely. The Bussmann FRN-R-15ID is backed by a manufacturer’s warranty. For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the Bussmann FRN-R-15ID?
You can call, text, or email our expert support team for fast answers. We’re here to help with product selection, installation tips, and troubleshooting. Contact Us
Why buy the Bussmann FRN-R-15ID from ZenSupply?
ZenSupply makes it easy to get the commercial door hardware you need—fast shipping, expert support, and rewards on every order. Our team is always ready to help you choose the right product for your project.
!