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MERSEN Fuse: A4J Series, Class J, Blade Body, Fast-Acting, 80 A, 600 V AC, 300 V DC - Fast-Acting Bolt-On Fuses
MERSENFast-Acting Bolt-On Fuses

MERSEN Fuse: A4J Series, Class J, Blade Body, Fast-Acting, 80 A, 600 V AC, 300 V DC

The MERSEN A4J Series is a fast-acting bolt-on fuse, specifically the Class J, blade body A4J80 model. It is rated for 80 A at 600 V AC and 300 V DC, and is non-indicating. This fuse is designed for overcurrent…

SKU 3G-OTH-25814

Brand
MERSEN
Item
Fuse: A4J Series, Class J, Blade Body, Fast-Acting, 80 A, 600 V AC, 300 V DC
Category
Fast-Acting Bolt-On Fuses
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Local availability & support — Singapore

Local office
20 Woodlands Link #09-05, Singapore 738733
Phone
+65 8878 8355
Delivery
Same-day or next-business-day delivery within Singapore for in-stock items; 7–14 days for factory-order parts from Europe.
Payment
Invoicing in SGD. PayNow, bank transfer, and corporate PO accepted.
Ships to
Singapore

Technical Specifications

MERSEN
Manufacturer Part Number
A4J80
Series
A4J
Type
Class J, Blade Body, Fast-Acting, 80 A, Non-Indicating
AC
600 V
DC
300 V

Technical Documents

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MERSEN Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The MERSEN A4J Series is a fast-acting bolt-on fuse, specifically the Class J, blade body A4J80 model. It is rated for 80 A at 600 V AC and 300 V DC, and is non-indicating. This fuse is designed for overcurrent protection in industrial equipment.

Frequently Asked Questions

What is the MERSEN A4J80 fuse used for?

The MERSEN A4J80 is a fast-acting Class J blade-body fuse rated 80 A at 600 V AC and 300 V DC. It provides overcurrent protection for industrial equipment such as motor control centers, panelboards, and branch circuits where high-speed interruption is required.

What are the specifications of the MERSEN A4J80 fuse?

The MERSEN A4J80 is a Class J, blade-body, fast-acting, non-indicating fuse rated 80 A at 600 V AC and 300 V DC. It is part of the A4J Series and is designed for bolt-on mounting in industrial overcurrent protection applications.

Where to buy MERSEN A4J80 fuses worldwide?

3G Electric supplies MERSEN A4J80 fuses worldwide. As a global industrial sourcing partner, we handle full logistics, customs clearance, and delivery to your site. Contact us for pricing and lead time on this fast-acting Class J fuse.

How to select the right MERSEN A4J80 fuse for an application?

To select the MERSEN A4J80, verify your circuit voltage does not exceed 600 V AC or 300 V DC, and that the continuous load current is below 80 A. Ensure the fuse holder accepts Class J blade-body fuses. Consult the equipment manual for overcurrent protection requirements.

Used in

Common applications for MERSEN
Power electronics protection — MERSEN A70Q series semiconductor fuses in variable frequency drives for motor control.
Surge protection for industrial panels — MERSEN STP480D07 SPDs in three-phase 480V AC distribution boards.
Control circuit overcurrent protection — MERSEN ATM series midget fuses in PLC and instrumentation cabinets.
Power distribution in manufacturing — MERSEN FSPDB4A finger-safe blocks in motor control centers for wire management.
DC bus protection in renewable energy — MERSEN A30QS series fuses in solar inverter DC inputs.
High-voltage semiconductor protection — MERSEN A70Q series fuses in welding equipment power supplies.

MERSEN Products

3G Electric supplies MERSEN fast-acting bolt-on fuses. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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Compatible alternatives & equivalents

Cross-referenced by specification & description
MERSEN Fuse: A4J Series, Class J, Blade Body, Fast-Acting, 90 A, 600 V AC, 300 V DC, Non-Indicating (MPN A4J90)
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MERSEN Fuse: A4J Series, Class J, Blade Body, Fast-Acting, 90 A, 600 V AC, 300 V DC, Non-Indicating (MPN A4J90)
MERSEN Fuse: A4J Series, Class J, Blade Body, Fast-Acting, 450 A, 600 V AC, 300 V DC, Non-Indicating (MPN A4J450)
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MERSEN Fuse: A4J Series, Class J, Blade Body, Fast-Acting, 450 A, 600 V AC, 300 V DC, Non-Indicating (MPN A4J450)
MERSEN Fuse: A4J Series, Class J, Blade Body, Fast-Acting, 70 A, 600 V AC, 300 V DC, Non-Indicating (MPN A4J70)
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MERSEN Fuse: A4J Series, Class J, Blade Body, Fast-Acting, 70 A, 600 V AC, 300 V DC, Non-Indicating (MPN A4J70)
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MERSEN Fuse: A4J Series, Class J, Blade Body, Fast-Acting, 225 A, 600 V AC, 300 V DC, Non-Indicating (MPN A4J225)
MERSEN Fuse: A4J Series, Class J, Blade Body, Fast-Acting, 300 A, 600 V AC, 300 V DC, Non-Indicating (MPN A4J300)
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MERSEN Fuse: A4J Series, Class J, Blade Body, Fast-Acting, 300 A, 600 V AC, 300 V DC, Non-Indicating (MPN A4J300)
MERSEN Fuse: A4J Series, Class J, Blade Body, Fast-Acting, 200 A, 600 V AC, 300 V DC, Non-Indicating (MPN A4J200)
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MERSEN Fuse: A4J Series, Class J, Blade Body, Fast-Acting, 200 A, 600 V AC, 300 V DC, Non-Indicating (MPN A4J200)

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