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FRN-R-4-1/2 FRN-R-4-1/2 is a 4.5A cartridge fuse from Eaton Bussmann Electrical Division, rated for 250VAC and 125VDC. It features a slow blow response time, RK5 class, and 200kA AC breaking capacity.
Mfr Part #:

FRN-R-4-1/2

Available from 1 distributors
Mfr Name: Eaton - Electronics Division
Eaton - Electronics Division
FRN-R-4-1/2 is a 4.5A cartridge fuse from Eaton Bussmann Electrical Division, rated for 250VAC and 125VDC. It features a slow blow response time, RK5 class, and 200kA AC breaking capacity.
✓ Total Stock: 7 pcs
$ Price Range: $43.08 - $43.67

FRN-R-4-1/2 Available from 1 distributor

✓ Authorised
✓ Non-Authorised
Distributor Stock Pricing MOQ PKG Lead Time Date Code On Order Quantity On Order Delivery
Bristol Electronics ✓
Non-Authorised Inventory information
7 pcs
On Request
7 pcs On Request 1 On Request On Request 2026-02-25 06:16:38 On Request On Request
DistyParts aggregates offers from multiple distributors. Final prices, lead times and terms are subject to the distributors' discretion and may change without prior notice. DistyParts is not liable for any discrepancies.

FRN-R-4-1/2 Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Applications
Approval Agency
Breaking Capacity @ Rated Voltage
Class
Current Rating (Amps)
Fuse Type
Industrial Grade
Mounting Type
Response Time
Tape & Reel
Voltage Rating
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FRN-R-4-1/2 Description

Short technical summary and product information.

The FRN-R-4-1/2 is a 4.5A cartridge fuse manufactured by Eaton Bussmann Electrical Division. It is designed for electrical and industrial applications requiring reliable overcurrent protection. The fuse is rated for 250VAC and 125VDC, with a high interrupting capacity of 200kA AC and 20kA DC. It features a slow blow (time-delay) characteristic, making it suitable for circuits with inrush currents. The fuse is classified as RK5 and is housed in a cartridge, non-standard package measuring 0.560" diameter by 2.000" length (14.22mm x 50.80mm). It requires a holder for mounting. The fuse is approved by CE, CSA, and UL. Compliance data (RoHS, REACH, MSL) is available but unverified.

FRN-R-4-1/2 Quick Information

Product Type: Cartridge Fuse
Series: FRN-R
Canonical Name: FRN-R-4-1/2 Cartridge Fuse, 4.5A, 250VAC/125VDC, RK5, Slow Blow
Subcategory: Electrical, Specialty Fuses

FRN-R-4-1/2 Compliance

RoHS Status: RoHS Compliant
Moisture Sensitivity Level (MSL): 1 Unlimited
REACH Status: REACH Unaffected

FRN-R-4-1/2 Estimated Pricing

Qty Low High
1+ $43.67 $43.67
5+ $43.08 $43.08

Estimated market price range - modelled values for guidance only, not live distributor offers.

FRN-R-4-1/2 Features

  • Rated for 4.5A continuous current.
  • Slow blow time-delay response.
  • 200kA AC high breaking capacity.
  • Requires holder for mounting.
  • UL/CSA/CE approved.

FRN-R-4-1/2 Applications

  • Used in electrical and industrial applications.
  • Protects circuits with inrush currents.
  • Suitable for motor starter and transformer protection.

FRN-R-4-1/2 FAQs

7 frequently asked questions generated from this part’s specifications.
What is the current rating of the FRN-R-4-1/2 fuse?

4.5A.

What are the voltage ratings?

250VAC and 125VDC.

What is the breaking capacity?

200kA AC and 20kA DC.

What is the response time?

Slow blow (time-delay).

What is the package type and size?

Cartridge, non-standard, 0.560" Dia x 2.000" L (14.22mm x 50.80mm).

What is the fuse class?

RK5.

How is the fuse mounted?

Requires a holder.

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