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

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

$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

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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 August 25th, 2016.
Matt H
August 25th, 2016
Hi, all of our fuses come in a pack of 5.
Answer this question
Asked by Anonymous on November 18th, 2016.
Matt H
November 18th, 2016
Hi these fuses are rated at 250 volts.
Answer this question
Asked by Anonymous on February 14th, 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 June 6th, 2017.
Matt H
June 6th, 2017
300mA (milliamps) is 0.3 amps. Unfortunately we do not have a fuse with that low of a value.
Answer this question
Asked by Anonymous on July 18th, 2018.
Matt H
July 19th, 2018
You should be using one that is the correct physical size and with the correct amperage, and either a slow or fast blow. These fuses are 0.25" x 1.25" and we offer smaller ones here: https://www.amplifiedparts.com/products/fuse-slo-blo-5mm-x-20mm. We only sell at 6.25 amp fuse and do not carry a 6 amp.
Answer this question
Asked by Anonymous on October 21st, 2018.
BradWbr
October 23rd, 2018
Staff Member
Yes, this is the correct size for that fuse holder.
Answer this question
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Product Reviews

5.00 out of 5 based on 5 reviews
Pete S. - March 4th, 2022
5 out of 5

Wow! When I searched the interwebs for a slo blo fuse I never imagined how impressed I would be with the ones I got from Amplifiedparts! Not only did these fuses fit perfectly in my 5f6a build, they added the shimmering sparkle high end my silver face twin reverb lacked! THANK YOU to amplified parts for helping me find my tone!

Christopher - May 9th, 2021
5 out of 5

They’re 3A fuses, and they, nothing else to say.

Dennis Popick - February 6th, 2020
5 out of 5

Needed this for my ‘64 Chevy Impala radio....exactly what I needed....no picture to hard to capture ...radio works perfectly!

Jim Stacey - October 7th, 2019
5 out of 5

Just what the Princeton ordered! Thanks.

Chris L - December 30th, 2018
5 out of 5

I used the 1 amp fuse for my 5f1 clone, it does the job. Fast shipping and a good price!