1. Home
  2. Products
  3. Power Supplies & Accessories

Fuse - Slow-Blow, 250V, 3AG, 0.25" x 1.25"

Fuse - Slow-Blow, 250V, 3AG, 0.25" x 1.25"

Fuse - Slow-Blow, 250V, 3AG, 0.25" x 1.25" image 1
Fuse - Slow-Blow, 250V, 3AG, 0.25" x 1.25" image 2
Click to zoom in
Fuse - Slow-Blow, 250V, 3AG, 0.25" x 1.25" image 1Fuse - Slow-Blow, 250V, 3AG, 0.25" x 1.25" image 2
Customer Images:
No Images yet! Submit a product image below!
$3.25
Package of 5
Sold as a package of 5
In Stock

Protect your expensive investment or hobby with inexpensive fuses. The 3AG Slo-Blo fuse solves a broad range of application requirements while offering reliable performance and costeffective circuit protection. Fits fuse block S-H259 and fuse holder S-H201.

  • Rated at 250V
  • Measures 1.25"(31.4mm) in length, 0.25"(6.3mm) in diameter
  • Slow-Blow
  • Package of 5
Part Numbers
AmperageOur Part NumberUPC/EAN
0.5 AmpsF-Z3AG-S0D5841358108280
1 AmpF-Z3AG-S1609722131148
1.5 AmpsF-Z3AG-S1D5841358108396
2 AmpsF-Z3AG-S2609722131155
2.5 AmpsF-Z3AG-S2D5609722164399
3 AmpsF-Z3AG-S3609722131162
4 AmpsF-Z3AG-S4609722131179
5 AmpsF-Z3AG-S5609722131186
6.25 AmpsF-Z3AG-S6D25609722131193
Product Measurements by Type
Cap Materialnickel-plated brass
Diameter0.25 in.
Interrupting Rating @ 125 VAC10,000 A
Interrupting Rating @ 250 VAC0.5 Amps versionF-Z3AG-S0D535 A
1 Amp versionF-Z3AG-S135 A
1.5 Amps versionF-Z3AG-S1D5100 A
2 Amps versionF-Z3AG-S2100 A
2.5 Amps versionF-Z3AG-S2D5100 A
3 Amps versionF-Z3AG-S3100 A
4 Amps versionF-Z3AG-S4200 A
5 Amps versionF-Z3AG-S5200 A
6.25 Amps versionF-Z3AG-S6D25200 A
Item Length1.25 in.
Nominal Cold Resistance0.5 Amps versionF-Z3AG-S0D51.26 Ω
1 Amp versionF-Z3AG-S10.3750 Ω
1.5 Amps versionF-Z3AG-S1D50.1910 Ω
2 Amps versionF-Z3AG-S20.1169 Ω
2.5 Amps versionF-Z3AG-S2D50.0811 Ω
3 Amps versionF-Z3AG-S30.0593 Ω
4 Amps versionF-Z3AG-S40.0311 Ω
5 Amps versionF-Z3AG-S50.0214 Ω
6.25 Amps versionF-Z3AG-S6D250.0154 Ω
Nominal Melting Point (I2t)0.5 Amps versionF-Z3AG-S0D52.55 A
1 Amp versionF-Z3AG-S114 A
1.5 Amps versionF-Z3AG-S1D538.0 A
2 Amps versionF-Z3AG-S277.0 A
2.5 Amps versionF-Z3AG-S2D5199 A
3 Amps versionF-Z3AG-S3200 A
4 Amps versionF-Z3AG-S476.1 A
5 Amps versionF-Z3AG-S5276 A
6.25 Amps versionF-Z3AG-S6D25388 A
Operating Temperature (TJ)-55ºC to 125ºC
Voltage Rating250 V
Packaging Information
Packaging Dimensions1.24 in. × 0.942 in. × 0.227 in.
Weight (Packaging)0.022 lbs.
Product Measurements by Item
F-Z3AG-S3 - 3 Amps versionCap Materialnickel-plated brass
Diameter0.25 in.
Interrupting Rating @ 125 VAC10,000 A
Interrupting Rating @ 250 VAC100 A
Item Length1.25 in.
Nominal Cold Resistance0.0593 Ω
Nominal Melting Point (I2t)200 A
Operating Temperature (TJ)-55ºC to 125ºC
Voltage Rating250 V
F-Z3AG-S2 - 2 Amps versionCap Materialnickel-plated brass
Diameter0.25 in.
Interrupting Rating @ 125 VAC10,000 A
Interrupting Rating @ 250 VAC100 A
Item Length1.25 in.
Nominal Cold Resistance0.1169 Ω
Nominal Melting Point (I2t)77.0 A
Operating Temperature (TJ)-55ºC to 125ºC
Voltage Rating250 V
F-Z3AG-S1 - 1 Amp versionCap Materialnickel-plated brass
Diameter0.25 in.
Interrupting Rating @ 125 VAC10,000 A
Interrupting Rating @ 250 VAC35 A
Item Length1.25 in.
Nominal Cold Resistance0.3750 Ω
Nominal Melting Point (I2t)14 A
Operating Temperature (TJ)-55ºC to 125ºC
Voltage Rating250 V
F-Z3AG-S4 - 4 Amps versionCap Materialnickel-plated brass
Diameter0.25 in.
Interrupting Rating @ 125 VAC10,000 A
Interrupting Rating @ 250 VAC200 A
Item Length1.25 in.
Nominal Cold Resistance0.0311 Ω
Nominal Melting Point (I2t)76.1 A
Operating Temperature (TJ)-55ºC to 125ºC
Voltage Rating250 V
F-Z3AG-S5 - 5 Amps versionCap Materialnickel-plated brass
Diameter0.25 in.
Interrupting Rating @ 125 VAC10,000 A
Interrupting Rating @ 250 VAC200 A
Item Length1.25 in.
Nominal Cold Resistance0.0214 Ω
Nominal Melting Point (I2t)276 A
Operating Temperature (TJ)-55ºC to 125ºC
Voltage Rating250 V
F-Z3AG-S6D25 - 6.25 Amps versionCap Materialnickel-plated brass
Diameter0.25 in.
Interrupting Rating @ 125 VAC10,000 A
Interrupting Rating @ 250 VAC200 A
Item Length1.25 in.
Nominal Cold Resistance0.0154 Ω
Nominal Melting Point (I2t)388 A
Operating Temperature (TJ)-55ºC to 125ºC
Voltage Rating250 V
F-Z3AG-S2D5 - 2.5 Amps versionCap Materialnickel-plated brass
Diameter0.25 in.
Interrupting Rating @ 125 VAC10,000 A
Interrupting Rating @ 250 VAC100 A
Item Length1.25 in.
Nominal Cold Resistance0.0811 Ω
Nominal Melting Point (I2t)199 A
Operating Temperature (TJ)-55ºC to 125ºC
Voltage Rating250 V
F-Z3AG-S0D5 - 0.5 Amps versionCap Materialnickel-plated brass
Diameter0.25 in.
Interrupting Rating @ 125 VAC10,000 A
Interrupting Rating @ 250 VAC35 A
Item Length1.25 in.
Nominal Cold Resistance1.26 Ω
Nominal Melting Point (I2t)2.55 A
Operating Temperature (TJ)-55ºC to 125ºC
Voltage Rating250 V
F-Z3AG-S1D5 - 1.5 Amps versionCap Materialnickel-plated brass
Diameter0.25 in.
Interrupting Rating @ 125 VAC10,000 A
Interrupting Rating @ 250 VAC100 A
Item Length1.25 in.
Nominal Cold Resistance0.1910 Ω
Nominal Melting Point (I2t)38.0 A
Operating Temperature (TJ)-55ºC to 125ºC
Voltage Rating250 V

My Project Lists

You must be logged in to add items to a project list.

Specifications, Files, and Documents

PDF: Specification Sheet Specification Sheet164.43 KB

Questions and Answers

Click each question to see its answers.
Asked by Anonymous on November 18th, 2016.
Matt H.
November 18th, 2016
Staff Member
Hi these fuses are rated at 250 volts.
[email protected]
May 23rd, 2019
You are talking DC voltage NOT AC voltage. B+ is power supply transformer voltage in a tube amp. Not the input voltage. These are general fuses and can be used on anything as long as the amps and volts are correct for whatever application.
Answer this question
Asked by Anonymous on August 26th, 2016.
Matt H.
August 26th, 2016
Staff Member
Hi, all of our fuses come in a pack of 5.
Answer this question
Asked by Anonymous on February 10th, 2017.
BradWbr
November 20th, 2018
Staff Member
250V is the max voltage rating of these fuses. As long as the voltage is lower than 250V you can use these fuses.
Answer this question
Asked by Anonymous on October 23rd, 2018.
BradWbr
October 23rd, 2018
Staff Member
Yes, this is the correct size for that fuse holder.
Answer this question
Terms and Conditions
Add a review

Product Reviews

5.00 out of 5 based on 12 reviews
tcolopy2 - October 10th, 2022
5 out of 5

Slow-Blows are the best;)

Ryan in Brooklyn - October 6th, 2022
5 out of 5

Replaced old fuses in my Dynaco MK IV tube amps that blew from a bad rectifier tube. Who knows how old those fuses were! I bought the 2 amp, 250 volt slow blow fuses. Great price and working well so far! Fast shipping as well.

clint - May 31st, 2022
5 out of 5

These type fuses are almost impossible to find in my local rural area. Thanks to AES I can still get them at a reasonable price. Because of the uncertain circumstances of our nations economy and supply chain, I got two packages of 5. Thanks

seafishkc - November 22nd, 2021
5 out of 5

Brought a 53 year old Fender Bandmaster back to life. Worked exactly as it should.

Bucky - September 13th, 2021
5 out of 5

These are quality Slo Blow Buss Fuses that protect your electronics when a problem comes along.

T. Buchanan - July 13th, 2021
5 out of 5

I was just about to give up finding what I needed and remembered previously buying from AES. I went to their webpage and immediately found what I needed at a most reasonable price, for product and shipping. I received my purchase in record time. Thanks AES!!!

Ampaholic - June 16th, 2020
5 out of 5

I was tempted to say these fuses really blow. However, I'm totally amped about them.

Jesse harmon - December 10th, 2019
5 out of 5

Worked perfectly for my radio restoration

antqlvromcasr.net - April 6th, 2019
5 out of 5

Fuse has been performing without incident.

keithb7 - December 21st, 2014
5 out of 5

What can I say? Great fuses that seem to blow slowly! ;)