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Fuses and Fuse Blocks

In electronics and electrical engineering, a fuse is an electrical safety device that operates to provide overcurrent protection of an electrical circuit. It essential component is a metal wire or strip that melts when too much current flows through it, thereby stopping or interrupting the current. It is a sacrificial device. The fuse blocks contain fuses rated at different amperage values depending upon the electrical device that it is protecting.

Save on quality industrial fuses and fuse blocks. Express shipping available. Easy 30-day returns. Shop Now!

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Mersen ATMR30 Fuse 30 A, 600V AC, Fast-Acting, Class CC, Pack Of 10
Mersen ATMR30 Fuse 30 A, 600V AC, Fast-Acting, Class CC, Pack Of 10 Sold out

Mersen ATMR30 Fuse 30 A, 600V AC, Fast-Acting, Class CC, Pack Of 10

MERSEN
$80.00 USD - $80.00 USD
$80.00 USD
$80.00 USD - $80.00 USD
$80.00 USD
Out of stock

Product Information Sold By Unit Item Name: Fast-Acting Fuse Voltage Rating: 600V AC Amperage Rating: 30 A Interrupt Rating: 200 kA Fuse Class: Cl...

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$80.00 USD - $80.00 USD
$80.00 USD
$80.00 USD - $80.00 USD
$80.00 USD
Sold out
TRS15R Mersen Ferraz Shawmut Fuse 15 A, Time-Delay, Class RK5, Pack Of 10
TRS15R Mersen Ferraz Shawmut Fuse 15 A, Time-Delay, Class RK5, Pack Of 10 Sold out

TRS15R Mersen Ferraz Shawmut Fuse Time-Delay, Class RK5, 600V AC, 15A

MERSEN
$44.60 USD - $44.60 USD
$44.60 USD
$44.60 USD - $44.60 USD
$44.60 USD
Out of stock

Product Information Sold Per Pack Of 10 Body Material: Polyester Class: Class RK5 Contact Material: Copper Current Rating: 15 A Height: 13.66 Leng...

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$44.60 USD - $44.60 USD
$44.60 USD
$44.60 USD - $44.60 USD
$44.60 USD
Sold out
Mersen Ferraz Shawmut ATMR5 Fuse, Fast Acting Class CC, Pack Of 10
Mersen Ferraz Shawmut ATMR5 Fuse, Fast Acting Class CC, Pack Of 10

Mersen Ferraz Shawmut ATMR5 Fuse, Fast Acting Class CC

MERSEN
$80.00 USD - $80.00 USD
$80.00 USD
$80.00 USD - $80.00 USD
$80.00 USD
Only 2 left!

Description Sold Per Pack Of 10 Application: Control Circuits Lighting General Loads Body Material: Glass Class: Class CC Contact Material: Tin-pl...

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$80.00 USD - $80.00 USD
$80.00 USD
$80.00 USD - $80.00 USD
$80.00 USD
ATQR15 Mersen Ferraz Shawmut Fuse Time Delay 600V AC 15 A, Sold Per Pack Of 10
ATQR15 Mersen Ferraz Shawmut Fuse Time Delay 600V AC 15 A, Sold Per Pack Of 10 Sold out

ATQR15 Mersen Ferraz Shawmut Fuse Time Delay 600V AC 15A

MERSEN
$65.00 USD - $65.00 USD
$65.00 USD
$65.00 USD - $65.00 USD
$65.00 USD
Out of stock

Product Information Sold Per Pack Of 10 Body Material: Glass Class: Class CC Contact Material: Tin-plated Copper Current Rating: 15 Amps Dimension...

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$65.00 USD - $65.00 USD
$65.00 USD
$65.00 USD - $65.00 USD
$65.00 USD
Sold out
AJT40N Mersen Amp-Trap 2000 Fuse 40A, 600V AC, Class J, Sold Per Pack Of 10 New
AJT40N Mersen Amp-Trap 2000 Fuse 40A, 600V AC, Class J, Sold Per Pack Of 10 New
Sold out

AJT40N Mersen Amp-Trap 2000 Fuse 40A, 600V AC, Class J

MERSEN
$68.44 USD - $68.44 USD
$68.44 USD
$68.44 USD - $68.44 USD
$68.44 USD
Out of stock

Product Information Sold Per Pack Of 10 Body Material: Glass Class: Class J Contact Material: Tin-Plated Copper Current Rating: 40 Amps Product Di...

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$68.44 USD - $68.44 USD
$68.44 USD
$68.44 USD - $68.44 USD
$68.44 USD
Sold out
Mersen ATMR3 Fuse Amp-Trap 600V 3A Fast-Acting Class CC, Pack Of 10
Mersen ATMR3 Fuse Amp-Trap 600V 3A Fast-Acting Class CC, Pack Of 10
Sold out

Mersen ATMR3 Fuse Amp-Trap 600V 3A Fast-Acting Class CC

MERSEN
$36.93 USD - $36.93 USD
$36.93 USD
$36.93 USD - $36.93 USD
$36.93 USD
Out of stock

Description Sold Per Pack Of 10 Body/Insulating Material: GMG Class: Class CC Contact Material: Tin-Plated Copper Current Rating: 3 Amps Product D...

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$36.93 USD - $36.93 USD
$36.93 USD
$36.93 USD - $36.93 USD
$36.93 USD
Sold out
AJT60N Mersen Fuse Amp-Trap 2000 Class J 60A Time-Delay, Sold Per Pack Of 10
AJT60N Mersen Fuse Amp-Trap 2000 Class J 60A Time-Delay, Sold Per Pack Of 10
Sold out

AJT60N Mersen Fuse Amp-Trap 2000 Time-Delay 60A Class J 600V AC

MERSEN
$200.00 USD - $200.00 USD
$200.00 USD
$200.00 USD - $200.00 USD
$200.00 USD
Out of stock

Product Information 60 Amps, 600 Volts AC UL Class J Fuse Time Delay For Motor Starting and Transformer Inrush Solid State SmartSpot Visual Blown ...

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$200.00 USD - $200.00 USD
$200.00 USD
$200.00 USD - $200.00 USD
$200.00 USD
Sold out
A70P20-4 A70P204 Mersen Fuse Semiconductor 20 A / 700V, Sold Per Pack Of 10
A70P20-4 A70P204 Mersen Fuse Semiconductor 20 A / 700V, Sold Per Pack Of 10

A70P20-4 Mersen Amp-Trap Fuse Semiconductor 20 Amps 700 Volt

MERSEN
$129.75 USD - $129.75 USD
$129.75 USD
$129.75 USD - $129.75 USD
$129.75 USD
Only 3 left!

Product Information Sold Per Pack Of 10 Semiconductor Protection Fuse Fast Acting 100kA AC/100kA DC 700V AC / 650V DC 20 Amps

$129.75 USD - $129.75 USD
$129.75 USD
$129.75 USD - $129.75 USD
$129.75 USD
Mersen ATDR1-1/8 Fuse Time Delay 1-1/8A Class CC, Pack Of 10
Mersen ATDR1-1/8 Fuse Time Delay 1-1/8A Class CC, Pack Of 10

Mersen ATDR1-1/8 Fuse Time Delay 1-1/8A Class CC, Pack Of 10

MERSEN
$39.20 USD - $39.20 USD
$39.20 USD
$39.20 USD - $39.20 USD
$39.20 USD
Only 2 left!

Description Sold Per Pack Of 10 P/n: ATDR118 Sub Brand: Amp-Trap 2000 Type: Time-Delay Voltage Rating: 600V AC Amperage Rating: 1.125 Amp Fuse Cla...

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$39.20 USD - $39.20 USD
$39.20 USD
$39.20 USD - $39.20 USD
$39.20 USD
AJT40 Mersen Fuse Amp-Trap 2000 600V AC 40A Sold Per Pack Of 10, New
AJT40 Mersen Fuse Amp-Trap 2000 600V AC 40A Sold Per Pack Of 10, New
Sold out

AJT40 Mersen Ferraz Shawmut Fuse Amp-Trap 2000, Class J, 40A, 600V AC

MERSEN
$115.00 USD - $115.00 USD
$115.00 USD
$115.00 USD - $115.00 USD
$115.00 USD
Out of stock

Product Information Sold Per Pack Of 10 Body Material: Glass Class: Class J Contact Material: Tin-Plated Copper Current Rating: 40 Amps Dimensions...

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$115.00 USD - $115.00 USD
$115.00 USD
$115.00 USD - $115.00 USD
$115.00 USD
Sold out
ATMR1/4 ATMR14 Mersen Fuse 1/4A 600VAC Fast Acting Class CC, Sold Per Pack Of 10
ATMR1/4 ATMR14 Mersen Fuse 1/4A 600VAC Fast Acting Class CC, Sold Per Pack Of 10
Sold out

ATMR1/4 Mersen Ferraz Shawmut Fuse 1/4 A 600V AC Fast Acting Class CC

MERSEN
$38.75 USD - $38.75 USD
$38.75 USD
$38.75 USD - $38.75 USD
$38.75 USD
Out of stock

Product Information Sold Per Pack Of 10 ATMR14 Class: Class CC Current Rating: 0.25 A Dimensions: 0.5625 x 2 in Primary Type: Single-Use Fuses Ser...

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$38.75 USD - $38.75 USD
$38.75 USD
$38.75 USD - $38.75 USD
$38.75 USD
Sold out
Mersen AJT225 Fuse Time-Delay Class J Visual Indicator 225A/600V AC
Mersen AJT225 Fuse Time-Delay Class J Visual Indicator 225A/600V AC

Mersen AJT225 Fuse Time-Delay Class J Visual Indicator 225A/600V AC

MERSEN
$105.00 USD - $105.00 USD
$105.00 USD
$105.00 USD - $105.00 USD
$105.00 USD
10 in stock

Description Sold By Unit Brand Name: Ferraz Shawmut Sub Brand: Amp-Trap 2000 Type: Time-Delay Voltage Rating: 600V AC Amperage Rating: 225 A Inter...

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$105.00 USD - $105.00 USD
$105.00 USD
$105.00 USD - $105.00 USD
$105.00 USD
ATDR1/2 ATDR12 Ferraz Shawmut Fuse 1/2 A, Time Delay, Class CC, Sold By Unit
ATDR1/2 ATDR12 Ferraz Shawmut Fuse 1/2 A, Time Delay, Class CC, Sold By Unit

ATDR1/2 Ferraz Shawmut Fuse 1/2 A, Time Delay, Class CC

MERSEN
$6.50 USD - $6.50 USD
$6.50 USD
$6.50 USD - $6.50 USD
$6.50 USD
7 in stock

Product Information ATDR12 Application: Small Motors Contactors Lighting Heaters General Loads Body Material: Glass Class: Class CC Contact Materi...

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$6.50 USD - $6.50 USD
$6.50 USD
$6.50 USD - $6.50 USD
$6.50 USD
AJT15N Mersen Amp-Trap 2000 Fuse 600V AC, 15 A Class J, Sold Per Pack Of 10
AJT15N Mersen Amp-Trap 2000 Fuse 600V AC, 15 A Class J, Sold Per Pack Of 10
Sold out

AJT15N Mersen Amp-Trap 2000 Fuse 600V AC, 15 A Class J, Time-Delay

MERSEN
$90.00 USD - $90.00 USD
$90.00 USD
$90.00 USD - $90.00 USD
$90.00 USD
Out of stock

Product Information Sold Per Pack Of 10 Brand Name Ferraz Shawmut Sub Brand Amp-Trap...

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$90.00 USD - $90.00 USD
$90.00 USD
$90.00 USD - $90.00 USD
$90.00 USD
Sold out
ATDR1-1/2 ATDR112 Mersen Fuse 1-1/2 A, Amp-Trap 2000, Class CC, Time-Delay
ATDR1-1/2 ATDR112 Mersen Fuse 1-1/2 A, Amp-Trap 2000, Class CC, Time-Delay
Sold out

ATDR1-1/2 Mersen Fuse 1-1/2 A, Amp-Trap 2000, Class CC, Time-Delay

MERSEN
$35.89 USD - $35.89 USD
$35.89 USD
$35.89 USD - $35.89 USD
$35.89 USD
Out of stock

Product Information Sold Per Pack Of 10 Sub Brand: Amp-Trap 2000 Item Name: North American Power Fuse Type: Time-Delay Voltage Rating: 600 VAC Amp...

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$35.89 USD - $35.89 USD
$35.89 USD
$35.89 USD - $35.89 USD
$35.89 USD
Sold out
ATMR1/2 ATMR12 Mersen Amp-Trap Fuses, 600V AC/DC, 1/2 A, Class CC
ATMR1/2 ATMR12 Mersen Amp-Trap Fuses, 600V AC/DC, 1/2 A, Class CC
Sold out

ATMR1/2 Mersen Amp-Trap Fuses, 600V AC/DC, 1/2 A, Class CC

MERSEN
$3.69 USD - $3.69 USD
$3.69 USD
$3.69 USD - $3.69 USD
$3.69 USD
Out of stock

Product Information Application: Control Circuits Lighting General Loads Fast-Acting 200kA I.R AC/100kA I.R DC Body Material: Glass Class: Class C...

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$3.69 USD - $3.69 USD
$3.69 USD
$3.69 USD - $3.69 USD
$3.69 USD
Sold out
TR6R Mersen Tri-Onic Class RK5, Fuses 250V AC, 6 A, Pack Of 10
TR6R Mersen Tri-Onic Class RK5, Fuses 250V AC, 6 A, Pack Of 10

TR6R Mersen Tri-Onic Class RK5, Fuses 250V AC, 6 A

MERSEN
$89.00 USD - $89.00 USD
$89.00 USD
$89.00 USD - $89.00 USD
$89.00 USD
Only 1 left!

Product Information Sold Per Pack Of 10 6 Amps, 250 Volts AC UL Class RK5 Dual Element Tri-Onic® Time Delay Physical Size: 9/16" x 2" Current Limi...

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$89.00 USD - $89.00 USD
$89.00 USD
$89.00 USD - $89.00 USD
$89.00 USD
Mersen J166 Fuse Reducer Class J 100A / 600V To 60A / 600V, Sold Per Pair
Mersen J166 Fuse Reducer Class J 100A / 600V To 60A / 600V, Sold Per Pair
Sold out

J166 Mersen Fuse Reducer Class J 100A / 600V To 60A / 600V

MERSEN
$27.50 USD - $27.50 USD
$27.50 USD
$27.50 USD - $27.50 USD
$27.50 USD
Out of stock

Product Information Sold Per Pair Brand Name Mersen Item Name Fuse Reducer ...

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$27.50 USD - $27.50 USD
$27.50 USD
$27.50 USD - $27.50 USD
$27.50 USD
Sold out
AJT200N Mersen Fuse Amp-Trap 2000 Class J 600 VAC 200A Time-Delay, Sold By Unit
AJT200N Mersen Fuse Amp-Trap 2000 Class J 600 VAC 200A Time-Delay, Sold By Unit
Sold out

AJT200N Mersen Fuse Amp-Trap 2000 Class J 600 VAC 200A Time-Delay

MERSEN
$180.00 USD - $180.00 USD
$180.00 USD
$180.00 USD - $180.00 USD
$180.00 USD
Out of stock

Product Information Sold By Unit Rated Voltage AC UL: 600V Rated Voltage DC UL: 500V Frequency: 50/60Hz Ampere Rating: 200A ROHS Compliant: Yes Fu...

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$180.00 USD - $180.00 USD
$180.00 USD
$180.00 USD - $180.00 USD
$180.00 USD
Sold out
AJT50N Mersen Fuse Amp-Trap 2000 600V AC 50 Amps Class J, Sold Per Pack Of 10
AJT50N Mersen Fuse Amp-Trap 2000 600V AC 50 Amps Class J, Sold Per Pack Of 10
Sold out

AJT50N Mersen Fuse Amp-Trap 2000 600V AC 50 Amps Class J

MERSEN
$155.00 USD - $155.00 USD
$155.00 USD
$155.00 USD - $155.00 USD
$155.00 USD
Out of stock

Product Information Sold Per Pack Of 10 Fuse Amp-Trap 2000 600V AC 50 Amps Time-Delay Class J AJT Series

$155.00 USD - $155.00 USD
$155.00 USD
$155.00 USD - $155.00 USD
$155.00 USD
Sold out
Mersen Ferraz Shawmut ATMR1 Fuse 1 A, Fast Acting, Class CC, Pack Of 10
Mersen Ferraz Shawmut ATMR1 Fuse 1 A, Fast Acting, Class CC, Pack Of 10

Mersen Ferraz Shawmut ATMR1 Fuse 1 A, Fast Acting, Class CC, 600V AC

MERSEN
$41.61 USD - $41.61 USD
$41.61 USD
$41.61 USD - $41.61 USD
$41.61 USD
Only 1 left!

Description Sold Per Pack Of 10 Fuse 1 A, Fast Acting, Class CC, 600V AC

$41.61 USD - $41.61 USD
$41.61 USD
$41.61 USD - $41.61 USD
$41.61 USD
AJT10 Mersen Fuse Smart Spot 600V AC, 10 A, Class J, Sold Per Pack Of 10
AJT10 Mersen Fuse Smart Spot 600V AC, 10 A, Class J, Sold Per Pack Of 10
Sold out

AJT10 Mersen Fuse Smart Spot 600V AC, 10 A, Class J

MERSEN
$76.50 USD - $76.50 USD
$76.50 USD
$76.50 USD - $76.50 USD
$76.50 USD
Out of stock

Product Information Sold Per Pack Of 10 Ferraz Shawmut Fuse, Time-Delay, Class J, Visual Indicator, 200kA AC/100kA DC, 600V AC, 10 A

$76.50 USD - $76.50 USD
$76.50 USD
$76.50 USD - $76.50 USD
$76.50 USD
Sold out
ATMR25 Mersen Ferraz Shawmut Fuse Class CC Fast Acting 25 A, Sold Per Pack Of 10
ATMR25 Mersen Ferraz Shawmut Fuse Class CC Fast Acting 25 A, Sold Per Pack Of 10
Sold out

ATMR25 Mersen Ferraz Shawmut Fuse Class CC Fast Acting 25 A

MERSEN
$41.25 USD - $41.25 USD
$41.25 USD
$41.25 USD - $41.25 USD
$41.25 USD
Out of stock

Product Information Sold Per Pack Of 10 Product Attribute Attribute Value Class Class CC Current Rating 25 A Dimensions 10 x 38 mm Ser...

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$41.25 USD - $41.25 USD
$41.25 USD
$41.25 USD - $41.25 USD
$41.25 USD
Sold out
ATQR1 Mersen Amp-Trap 2000 Fuse Time-Delay, 1 A, 600V AC, Sold Per Pack Of 10
ATQR1 Mersen Amp-Trap 2000 Fuse Time-Delay, 1 A, 600V AC, Sold Per Pack Of 10
Sold out

ATQR1 Mersen Amp-Trap 2000 Fuse Time-Delay, Class CC, 1 A, 600V AC

MERSEN
$35.00 USD - $35.00 USD
$35.00 USD
$35.00 USD - $35.00 USD
$35.00 USD
Out of stock

Product Information Sold Per Pack Of 10 Brand Name Ferraz Shawmut Sub Brand Amp-Trap® 2000 Item Name North American Power Fuse Type Time-Delay...

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$35.00 USD - $35.00 USD
$35.00 USD
$35.00 USD - $35.00 USD
$35.00 USD
Sold out
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