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MERSEN Fuse: A4J Series, Class J, Blade Body, Fast-Acting, 90 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, 90 A, 600 V AC, 300 V DC

The MERSEN A4J Series is a fast-acting bolt-on fuse, specifically the Class J, blade body model A4J90. It is rated for 90 A at 600 V AC and 300 V DC, and is non-indicating. This fuse is designed for overcurrent…

SKU 3G-OTH-25822

Brand
MERSEN
Item
Fuse: A4J Series, Class J, Blade Body, Fast-Acting, 90 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
A4J90
Series
A4J
Type
Class J, Blade Body, Fast-Acting, 90 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 model A4J90. It is rated for 90 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 A4J90 fuse used for?

The MERSEN A4J90 is a fast-acting bolt-on fuse used for overcurrent protection in industrial equipment. It is designed for Class J applications, protecting circuits rated up to 90 A at 600 V AC or 300 V DC. Typical uses include motor control centers, panelboards, and switchgear requiring reliable short-circuit protection.

What are the specifications of the MERSEN A4J90 fuse?

The MERSEN A4J90 is a Class J, blade body, fast-acting fuse rated 90 A at 600 V AC and 300 V DC. It is non-indicating and part of the A4J Series. The manufacturer part number is A4J90. This fuse provides overcurrent protection for industrial circuits and is designed for bolt-on mounting.

Where to buy MERSEN A4J90 fuses worldwide?

3G Electric supplies MERSEN A4J90 fuses worldwide. As a global industrial distributor, we handle full logistics, customs clearance, and delivery to your location. Contact us to source this fuse for your project. We provide competitive pricing and reliable service for industrial procurement needs.

How to select the correct MERSEN A4J90 fuse for an application?

To select the MERSEN A4J90, verify your circuit's voltage (600 V AC or 300 V DC max) and current rating (90 A). Ensure the fuse is Class J rated for your equipment's short-circuit capacity. The fast-acting characteristic suits circuits with minimal inrush. Always consult the manufacturer's data sheet for coordination with upstream devices.

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, 80 A, 600 V AC, 300 V DC, Non-Indicating (MPN A4J80)
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MERSEN Fuse: A4J Series, Class J, Blade Body, Fast-Acting, 80 A, 600 V AC, 300 V DC, Non-Indicating (MPN A4J80)
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)
MERSEN Fuse: A4J Series, Class J, Blade Body, Fast-Acting, 225 A, 600 V AC, 300 V DC, Non-Indicating (MPN A4J225)
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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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