---
product_id: 166093450
title: "5x20 mm 4 A 4 amp 125 V 125 Volt 0.2x0.78 Inch F4AL125V Fast-Blow Glass Fuses (Pack of 10)"
brand: "bojack"
price: "B/.19"
currency: PAB
in_stock: true
reviews_count: 13
category: "Bojack"
url: https://www.desertcart.com.pa/products/166093450-5x20-mm-4-a-4-amp-125-v-125-volt
store_origin: PA
region: Panama
---

# 4A Fast-Blow Current 5x20 mm Compact Size 125V Voltage Rating 5x20 mm 4 A 4 amp 125 V 125 Volt 0.2x0.78 Inch F4AL125V Fast-Blow Glass Fuses (Pack of 10)

**Brand:** bojack
**Price:** B/.19
**Availability:** ✅ In Stock

## Summary

> ⚡ Stay powered, stay protected — don’t let a blown fuse slow you down!

## Quick Answers

- **What is this?** 5x20 mm 4 A 4 amp 125 V 125 Volt 0.2x0.78 Inch F4AL125V Fast-Blow Glass Fuses (Pack of 10) by bojack
- **How much does it cost?** B/.19 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.pa](https://www.desertcart.com.pa/products/166093450-5x20-mm-4-a-4-amp-125-v-125-volt)

## Best For

- bojack enthusiasts

## Why This Product

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

## Key Features

- • **Clear Glass Design:** Easily inspect fuse status at a glance for quick troubleshooting.
- • **Compact & Universal Fit:** Standard 5x20 mm size fits a wide range of devices seamlessly.
- • **Convenient 10-Pack Storage:** Comes in a handy plastic case to keep your spares organized and ready.
- • **Reliable 4 Amp Current Rating:** Handles up to 4A ensuring optimal performance without compromise.
- • **Precision Fast-Blow Protection:** Instant circuit interruption to safeguard your valuable electronics.

## Overview

BOJACK’s 10-pack of 5x20 mm fast-blow glass fuses delivers reliable 4A current protection at 125V, designed to instantly cut off abnormal currents and prevent damage to your electronics. Compact, transparent, and neatly packaged, these fuses are essential for maintaining safe and efficient circuit operation in home and professional settings.

## Description

BOJACK 10 Pcs High Quality Fast-Blow Glass Fuse Fuse Dimension:5x20 mm/0.2x0.78 Inch Fuse Current: 4A Fuse Voltage: 125V The role of the fuse：When a circuit malfunctions or is abnormal, the current is constantly rising, and the increased current may damage some important components or valuable components in the circuit, or it may burn the circuit or even cause a fire.The fuse will cut off the current when the current abnormally rises to a certain height and a certain time, thereby protecting the safe operation of the circuit.

Review: Great value - I had Christmas inflatables that had blown a fuse. This fit immediately. No issues. Perfect value.
Review: Works well - Small Christmas light fuses, difficult to find plus the price was right.

## Features

- BOJACK 10 Pcs High Quality Fast-Blow Glass Fuse
- Fuse Dimension: 5x20 mm/0.2x0.78 Inch
- Fuse Current: 4A
- Fuse Voltage: 125V
- Package Quantity: 10 pcs Packed in a plastic storage case

## Technical Specifications

| Specification | Value |
|---------------|-------|
| AC Adapter Current | 4 Amps |
| ASIN | B07WTVGSCF |
| Best Sellers Rank | #1,526 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #1 in Cartridge Fuses |
| Brand | BOJACK |
| Current Rating | 4 Amps |
| Date First Available | August 21, 2019 |
| Item Weight | 0.317 ounces |
| Item model number | BJ-GFB-4A |
| Manufacturer | BOJACK |
| Material | Glass |
| Mounting Type | Through-Hole Mount |
| Package Dimensions | 2.13 x 1.65 x 0.55 inches |
| UPC | 769390171508 |
| Unit Count | 10 Count |
| Voltage | 125 Volts |

## Product Details

- **AC Adapter Current:** 4 Amps
- **Brand:** BOJACK
- **Material:** Glass
- **Mounting Type:** Through-Hole Mount
- **Voltage:** 125 Volts

## Images

![5x20 mm 4 A 4 amp 125 V 125 Volt 0.2x0.78 Inch F4AL125V Fast-Blow Glass Fuses (Pack of 10) - Image 1](https://m.media-amazon.com/images/I/71O6HNrJAXL.jpg)

## Questions & Answers

**Q: Mine calls for a 125V 5 Amp but when I measure it is exactly 19 mm long x 5 mm wide, not 20 mm long?**
A: Sorry, these do measure exactly 20mm long...

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great value
*by E***D on December 14, 2025*

I had Christmas inflatables that had blown a fuse. This fit immediately. No issues. Perfect value.

### ⭐⭐⭐⭐⭐ Works well
*by G***E on December 18, 2025*

Small Christmas light fuses, difficult to find plus the price was right.

### ⭐⭐⭐⭐⭐ Great replacement bulbs!
*by E***R on January 1, 2026*

Great replacement bulb, nice and bright! Glad these are made out of plastic so the don’t shatter like my old bulbs. Highly recommended for OG Xmas light strings!

## Frequently Bought Together

- BOJACK 5x20 mm 4 A 4 amp 125 V 125 Volt 0.2x0.78 Inch F4AL125V Fast-Blow Glass Fuses (Pack of 10)
- BOJACK 6x30mm 4 A 4 amp 250 V 0.24x1.18 Inch Volt F4AL250V Fast-Blow Glass Fuses(Pack of 18 Pcs)
- Blue Sea Systems 5021 Panel Mount AGC/MDL Fuse Holder, Black

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**Shop now:** [https://www.desertcart.com.pa/products/166093450-5x20-mm-4-a-4-amp-125-v-125-volt](https://www.desertcart.com.pa/products/166093450-5x20-mm-4-a-4-amp-125-v-125-volt)

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*Product available on Desertcart Panama*
*Store origin: PA*
*Last updated: 2026-01-27*