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MERSEN Fuse: A4J Series, Class J, Blade Body, Fast-Acting, 450 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, 450 A, 600 V AC, 300 V DC

The MERSEN A4J Series is a fast-acting bolt-on fuse, specifically the Class J, blade body A4J450 model rated at 450 A, 600 V AC, and 300 V DC. This non-indicating fuse is designed for overcurrent protection in…

SKU 3G-OTH-25668

Brand
MERSEN
Item
Fuse: A4J Series, Class J, Blade Body, Fast-Acting, 450 A, 600 V AC, 300 V DC
Category
Fast-Acting Bolt-On Fuses
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Technical Specifications

MERSEN
Manufacturer Part Number
A4J450
Series
A4J
Type
Class J, Blade Body, Fast-Acting, 450 A, Non-Indicating
AC
600 V
DC
300 V
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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 A4J450 model rated at 450 A, 600 V AC, and 300 V DC. This non-indicating fuse is designed for overcurrent protection in industrial equipment.

Frequently Asked Questions

What is the MERSEN A4J450 fuse used for?

The MERSEN A4J450 is a fast-acting Class J blade-body fuse rated 450 A, 600 V AC, 300 V DC. It provides overcurrent protection in industrial equipment such as motor control centers, panelboards, and switchgear where high interrupting capacity and current limitation are required.

What are the specifications of the MERSEN A4J450 fuse?

The MERSEN A4J450 is a 450 A, 600 V AC / 300 V DC fast-acting Class J fuse with a blade body and non-indicating design. It is part of the A4J series and is suitable for branch-circuit protection in industrial power distribution systems.

Where to buy MERSEN A4J450 fuses worldwide?

3G Electric supplies the MERSEN A4J450 fuse to customers worldwide. As a global industrial sourcing partner, we handle logistics, customs clearance, and delivery to your site. Contact us for pricing and lead time on this Class J fast-acting fuse.

How to select the right MERSEN A4J fuse for an application?

Select the MERSEN A4J fuse based on system voltage (600 V AC or 300 V DC), continuous current rating (e.g., 450 A for the A4J450), and available fault current. Class J fuses provide high interrupting capacity and current limitation, making them suitable for motor circuits and feeder protection.

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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