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MERSEN Fuse: A4J Series, Class J, Cylindrical Body, Fast-Acting, 25 A, 600 V AC - Fast-Acting Cylindrical Fuses
MERSENFast-Acting Cylindrical Fuses

MERSEN Fuse: A4J Series, Class J, Cylindrical Body, Fast-Acting, 25 A, 600 V AC

The MERSEN A4J Series is a fast-acting cylindrical fuse with a Class J body, rated at 25 A, 600 V AC, and 300 V DC (MPN A4J25). This industrial fuse is designed for overcurrent protection in electrical circuits.

SKU 3G-OTH-133115

Brand
MERSEN
Item
Fuse: A4J Series, Class J, Cylindrical Body, Fast-Acting, 25 A, 600 V AC
Category
Fast-Acting Cylindrical Fuses
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Technical Specifications

MERSEN
Manufacturer Part Number
A4J25
Type
Class J, Cylindrical Body, Fast-Acting, 25 A
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 cylindrical fuse with a Class J body, rated at 25 A, 600 V AC, and 300 V DC (MPN A4J25). This industrial fuse is designed for overcurrent protection in electrical circuits.

Frequently Asked Questions

What is the MERSEN A4J25 fuse used for?

The MERSEN A4J25 is a fast-acting cylindrical Class J fuse rated at 25 A, 600 V AC, and 300 V DC. It provides overcurrent protection in industrial electrical circuits, such as motor control centers, panelboards, and switchgear, where rapid clearing of short circuits is required.

What are the specifications of the MERSEN A4J25 fuse?

The MERSEN A4J25 is a Class J, cylindrical-body, fast-acting fuse rated at 25 A, 600 V AC, and 300 V DC. It is part of the A4J series and carries the manufacturer part number A4J25. These ratings ensure reliable overcurrent protection in industrial power distribution systems.

Where to buy MERSEN A4J25 fuses worldwide?

3G Electric supplies the MERSEN A4J25 fuse worldwide. As a global industrial equipment distributor, we handle full logistics, customs clearance, and delivery to your site. Contact us for availability and lead time; we source and deliver this Class J fast-acting fuse to any international destination.

How to select the correct MERSEN A4J25 fuse for an application?

To select the MERSEN A4J25, verify your circuit's voltage (up to 600 V AC or 300 V DC) and continuous current (25 A). Ensure the fuse's Class J rejection-style holder matches your panel. For fast-acting protection, confirm the application requires rapid clearing without time-delay characteristics. Consult a qualified engineer for coordination studies.

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 cylindrical fuses. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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