---
product_id: 3025491
title: "Series FRN-R 50 Amp Fuse, 250 Vac and IR 200 kA /125 Vdc and IR 20 kA, Retail Pack - 2 Pieces"
brand: "bussmann"
price: "KSh9546"
currency: KES
in_stock: true
reviews_count: 8
category: "Bussmann"
url: https://www.desertcart.co.ke/products/3025491-series-frn-r-50-amp-fuse-250-vac-and-ir
store_origin: KE
region: Kenya
---

# 10s time-delay for motor surges 50A heavy-duty current 200kA interrupt rating Series FRN-R 50 Amp Fuse, 250 Vac and IR 200 kA /125 Vdc and IR 20 kA, Retail Pack - 2 Pieces

**Brand:** bussmann
**Price:** KSh9546
**Availability:** ✅ In Stock

## Summary

> 🛠️ Power up with confidence — fuse protection that works as hard as you do!

## Quick Answers

- **What is this?** Series FRN-R 50 Amp Fuse, 250 Vac and IR 200 kA /125 Vdc and IR 20 kA, Retail Pack - 2 Pieces by bussmann
- **How much does it cost?** KSh9546 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.ke](https://www.desertcart.co.ke/products/3025491-series-frn-r-50-amp-fuse-250-vac-and-ir)

## Best For

- bussmann enthusiasts

## Why This Product

- Trusted bussmann brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Surge-Proof Startups:** Time-delay design lets motor inrush currents pass without blowing, preventing costly downtime.
- • **Universal Compatibility:** Fits Class H, K, or R fuse blocks with versatile groove and notch design.
- • **Trusted Industrial Strength:** UL Listed with 200kA interrupt rating ensures top-tier safety and reliability.
- • **Ultimate Motor Burnout Shield:** Dual-element fuse protects against overloads and single-phasing, extending motor life.
- • **Lightning-Fast Short-Circuit Response:** Opens in as little as 0.004 seconds to stop dangerous faults instantly.

## Overview

The Bussmann Series FRN-R 50 Amp Fuse is a heavy-duty, dual-element, time-delay cartridge fuse designed for superior motor and main panel protection. Rated for 250 Vac with a 200kA interrupt rating, it allows temporary motor overloads and surge currents while preventing burnout from overloads and single-phasing. UL Listed and compatible with multiple fuse block classes, it’s a reliable choice for industrial, commercial, and residential applications requiring robust circuit protection.

## Description

Product Description Eaton Bussmann series advanced protection, energy efficient FRN-R Class RK5 dual element, current-limiting, time-delay fuses with optional open fuse indication on select ratings. Time-delay – 10 seconds (minimum) at 500% of rated current (8 seconds for 1⁄10-30A sizes). From the Manufacturer Heavy duty time-delay fuse used in motor protection. When sized correctly, it helps protect motors from burnout caused by overloads or single-phasing. The time-delay feature allows the initial startup current surge for typical motors to pass, but opens prior to motor burnout when longer, dangerous overloads are present. In addition, the dual-element design opens in as little as 0.004 second if the fuse experiences short-circuit conditions. UL Listed Class R (IR: 200kA). Groove in end cap or notch in knife blade permit the fuse to be used in Class H, Class K or Class R fuse blocks. Cartridge fuses are used to protect motors and branch circuits where higher amps or volt ratings are required. They are available in a wide variety of sizes, amp and volt ratings up to 600Vac and 600 amps. Cartridge fuses are used extensively in commercial, industrial and agricultural applications as well as residential fuse panels, air conditioning, pumps, appliances and other equipment. Cartridge fuses are available in two types. General Purpose fuses have no time-delay and protect fuse panels, appliances and branch circuits. Heavy- Duty fuses have a time-delay feature, allowing momentary motor startups. Both are available in 250Vac and 600Vac versions with catalog symbol and amp rating stamped on the knife blade or end cap.

Review: Works for AC units - Changed my bad fuse with this one for my AC unit and it worked perfectly. My advice is to search online if this one is compatible with your unit and if so go ahead and get it. Get it quickly and saved me a lot of money paying someone to do it for me.
Review: Got the heat pump working again. - Worked to get my heat pump back operational. Fuse block.

## Features

- Heavy-duty, dual element, time-delay cartridge fuse for motor and main panel protection.
- Helps protect motors against burnout from single-phasing on three-phase systems, and overloads
- Dual-element fuses can be applied in circuits subject to temporary motor overloads and surge currents to provide both high performance short-circuit and overload protection
- Use general purpose NON fuses for lighting or electric heating circuits.
- Provides motor overload, ground fault and short-circuit protection
- Helps protect motors against burnout from overloads and from single phasing on three phase systems
- Simplifies and improves blackout prevention (selective coordination)
- Can be applied in circuits subject to temporary motor overloads and surge currents to provide high performance short-circuit and overload protection
- Protects against low level overcurrent of overloads and will hold on inrush current 5 times greater than the amp rating of fuse for a min of 8 sec

## Technical Specifications

| Specification | Value |
|---------------|-------|
| AC Adapter Current | 50 Amps |
| ASIN | B00004WA2Z |
| Batteries Included? | No |
| Batteries Required? | No |
| Best Sellers Rank | #119,932 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #185 in Cartridge Fuses |
| Brand | Bussmann |
| Color | No Color |
| Current Rating | 50 Amps |
| Customer Reviews | 4.8 4.8 out of 5 stars (267) |
| Date First Available | February 17, 2007 |
| Global Trade Identification Number | 00051712112086 |
| Included Components | 2 Fuses |
| Is Discontinued By Manufacturer | Yes |
| Item Package Quantity | 1 |
| Item Weight | 3.2 ounces |
| Item dimensions L x W x H | 5.5 x 2.75 x 0.81 inches |
| Item model number | BP/FRN-R-50 |
| Manufacturer | Bussmann |
| Material | Metal |
| Mounting Type | Surface Mount |
| Part Number | BP-FRN-R-50 |
| Product Dimensions | 5.5 x 2.75 x 0.81 inches |
| Size | Pack of 1 |
| Specification Met | CE, CSA, UL |
| UPC | 051712112086 |
| Unit Count | 1.0 Count |
| Voltage | 250 Volts |
| Warranty Description | 1 year |

## Product Details

- **AC Adapter Current:** 50 Amps
- **Brand:** Bussmann
- **Item dimensions L x W x H:** 5.5 x 2.75 x 0.81 inches
- **Material:** Metal
- **Voltage:** 250 Volts

## Images

![Series FRN-R 50 Amp Fuse, 250 Vac and IR 200 kA /125 Vdc and IR 20 kA, Retail Pack - 2 Pieces - Image 1](https://m.media-amazon.com/images/I/41OAlGUtV5L.jpg)
![Series FRN-R 50 Amp Fuse, 250 Vac and IR 200 kA /125 Vdc and IR 20 kA, Retail Pack - 2 Pieces - Image 2](https://m.media-amazon.com/images/I/41sYy5ehbkL.jpg)
![Series FRN-R 50 Amp Fuse, 250 Vac and IR 200 kA /125 Vdc and IR 20 kA, Retail Pack - 2 Pieces - Image 3](https://m.media-amazon.com/images/I/51PHCVoW+EL.jpg)
![Series FRN-R 50 Amp Fuse, 250 Vac and IR 200 kA /125 Vdc and IR 20 kA, Retail Pack - 2 Pieces - Image 4](https://m.media-amazon.com/images/I/71zg3z89M-L.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Works for AC units
*by A***T on October 1, 2025*

Changed my bad fuse with this one for my AC unit and it worked perfectly. My advice is to search online if this one is compatible with your unit and if so go ahead and get it. Get it quickly and saved me a lot of money paying someone to do it for me.

### ⭐⭐⭐⭐⭐ Got the heat pump working again.
*by S***2 on October 21, 2025*

Worked to get my heat pump back operational. Fuse block.

### ⭐⭐⭐⭐⭐ Seems to work for my air conditioner fuse box.
*by B***N on January 10, 2026*

Worked for my air conditioner disconnect.

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*Product available on Desertcart Kenya*
*Store origin: KE*
*Last updated: 2026-02-21*