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MERSEN A4J150 Fast-Acting Bolt-On Fuse, Class J, 150 A, 600 V AC, 300 V DC - Fast-Acting Bolt-On Fuses
MERSENFast-Acting Bolt-On Fuses

MERSEN A4J150 Fast-Acting Bolt-On Fuse, Class J, 150 A, 600 V AC, 300 V DC

The MERSEN A4J Series is a fast-acting bolt-on fuse with a Class J blade body, rated at 150 A, 600 V AC, and 300 V DC. It is non-indicating and identified by manufacturer part number A4J150.

SKU 3G-OTH-25691

Brand
MERSEN
Item
A4J150 Fast-Acting Bolt-On Fuse, Class J, 150 A, 600 V AC, 300 V DC
Part Number
A4J150
Category
Fast-Acting Bolt-On Fuses
Available to Order
Also known as:A4J150MERSEN
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Technical Specifications

MERSEN
Manufacturer Part Number
A4J150
Series
A4J
Type
Class J, Blade Body, Fast-Acting, 150 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 with a Class J blade body, rated at 150 A, 600 V AC, and 300 V DC. It is non-indicating and identified by manufacturer part number A4J150.

Frequently Asked Questions

What is the MERSEN A4J150 fuse used for?

The MERSEN A4J150 is a fast-acting Class J blade-body fuse rated 150 A, 600 V AC, and 300 V DC. It protects industrial electrical circuits and equipment from overcurrents, commonly applied in motor control centers, panelboards, and feeder circuits where high interrupting capacity and compact size are required.

What are the specifications of the MERSEN A4J150 fuse?

The MERSEN A4J150 is a fast-acting, non-indicating Class J blade-body fuse rated 150 A, 600 V AC, and 300 V DC. It is part of the A4J Series and carries manufacturer part number A4J150. Its compact Class J dimensions allow direct replacement in existing Class J fuse holders.

Where to buy the MERSEN A4J150 fuse worldwide?

3G Electric supplies the MERSEN A4J150 fuse worldwide. As a global industrial equipment distributor established in 1990, we handle full logistics, customs clearance, and delivery to your site. Contact us for availability and lead time; we source and deliver this MERSEN fuse to any country.

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

To select the correct MERSEN A4J fuse, match the voltage rating (600 V AC or 300 V DC) and current rating (150 A for the A4J150) to your circuit requirements. Ensure the fuse holder accepts Class J blade bodies. Fast-acting fuses are ideal for resistive loads or circuits with minimal inrush current.

Used in

Common applications for MERSEN
Industrial control panels — Mersen USCC1 and USCC2 UL Class CC fuse blocks for DIN rail mounting and finger-safe branch circuit protection.
Motor starters — Mersen ATQ time-delay fuses and DAR0 R-rated fuses for motor overload and short-circuit protection.
Power supplies and instrumentation — Mersen GGM and GSB fast-acting cylindrical fuses for overcurrent protection in compact electronic circuits.
DC systems — Mersen A30QS very-fast-acting square fuses rated 300 V DC for semiconductor and DC equipment protection.
Medium-voltage distribution — Mersen DAR0 R-rated fuses rated 5.08 kV AC for general-purpose overcurrent protection with visual indication.
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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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