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FRN-R-50 FRN-R-50 is a 50A cartridge fuse from Eaton Bussmann Electrical Division. It is rated for 250VAC/125VDC with a slow blow response and Class RK5 protection.
Mfr Part #:

FRN-R-50

Available from 1 distributors
Mfr Name: Eaton - Electronics Division
Eaton - Electronics Division
FRN-R-50 is a 50A cartridge fuse from Eaton Bussmann Electrical Division. It is rated for 250VAC/125VDC with a slow blow response and Class RK5 protection.
✓ Total Stock: 4 pcs
$ Price Range: $34.92 - $53.72

FRN-R-50 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
4 pcs
On Request
4 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-50 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-50 Description

Short technical summary and product information.

The FRN-R-50 is a cartridge fuse from Eaton Bussmann, part of the FRN-R series. It is a Class RK5, slow-blow fuse designed for overcurrent protection in electrical and industrial applications.

 

Electrically, it is rated for 50A continuous current at 250VAC and 125VDC. It offers a high breaking capacity of 200kA AC and 20kA DC, suitable for high-fault-current environments. The slow blow response allows tolerance of inrush currents without nuisance tripping.

 

Mechanically, it comes in a non-standard cartridge package measuring 0.810" diameter by 3.00" length (20.57mm x 76.20mm). It requires a compatible fuse holder for mounting. The fuse holds approvals from CE, CSA, and UL.

 

Typical applications include industrial motor protection, electrical distribution panels, and other circuits requiring high interrupting capacity. Compliance with RoHS3 and REACH is claimed but unverified.

FRN-R-50 Quick Information

Product Type: Cartridge Fuse
Series: FRN-R
Canonical Name: FRN-R-50 Cartridge Fuse, 50A, 250VAC/125VDC, Slow Blow, Class RK5
Subcategory: Specialty Fuses

FRN-R-50 Compliance

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

FRN-R-50 Estimated Pricing

Qty Low High
1+ $53.72 $53.72
5+ $44.57 $44.57
10+ $41.10 $41.10
50+ $34.92 $34.92

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

FRN-R-50 Features

  • Rated 50A continuous current at 250VAC/125VDC.
  • Slow blow response for inrush current tolerance.
  • Class RK5 with 200kA AC breaking capacity.
  • Requires a fuse holder for installation.
  • Approved by CE, CSA, and UL.

FRN-R-50 Applications

  • Used in industrial motor protection circuits.
  • Suitable for electrical distribution panels.
  • Ideal for high inrush current applications.

FRN-R-50 FAQs

7 frequently asked questions generated from this part’s specifications.
What is the current rating of the FRN-R-50 fuse?

50 A.

What is the voltage rating?

250 VAC and 125 VDC.

What is the breaking capacity?

200 kA AC and 20 kA DC.

What is the response time?

Slow blow.

What is the fuse class?

RK5.

What approvals does it have?

CE, CSA, UL.

What is the package size?

0.810" diameter x 3.00" length (20.57mm x 76.20mm).

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