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MERSEN Semiconductor Fuse: A30QS Series, Fast-Acting, 300 A, 300 V AC - Fast-Acting Bolt-On Fuses
MERSENFast-Acting Bolt-On Fuses

MERSEN Semiconductor Fuse: A30QS Series, Fast-Acting, 300 A, 300 V AC

The MERSEN A30QS Series Semiconductor Fuse (MPN A30QS300-4) is a fast-acting bolt-on fuse rated for 300 A at 300 V AC and 300 V DC. This AC/DC voltage type fuse is designed for overcurrent protection in power…

SKU 3G-OTH-27130

Also listed as: A30QS3004 · A30QS300 4

Brand
MERSEN
Item
Semiconductor Fuse: A30QS Series, Fast-Acting, 300 A, 300 V AC
Category
Fast-Acting Bolt-On Fuses
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Technical Specifications

MERSEN
Manufacturer Part Number
A30QS300-4
Series
A30QS
Type
Fast-Acting, 300 A
AC
300 V
Voltage Type
AC/DC
DC DC Volt Rating
300 V

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

Product Description

The MERSEN A30QS Series Semiconductor Fuse (MPN A30QS300-4) is a fast-acting bolt-on fuse rated for 300 A at 300 V AC and 300 V DC. This AC/DC voltage type fuse is designed for overcurrent protection in power electronic circuits.

Frequently Asked Questions

What is the MERSEN A30QS300-4 semiconductor fuse used for?

The MERSEN A30QS300-4 is a fast-acting bolt-on fuse used for overcurrent protection in power electronic circuits. It is commonly applied in AC/DC drives, inverters, and power supplies where rapid fault clearing is required to protect sensitive semiconductor devices.

What are the specifications of the MERSEN A30QS300-4 fuse?

The MERSEN A30QS300-4 is a 300 A, 300 V AC and 300 V DC fast-acting semiconductor fuse from the A30QS series. It features a bolt-on design for secure mounting and is rated for both AC and DC voltage types, making it suitable for demanding power electronics applications.

Where to buy the MERSEN A30QS300-4 fuse worldwide?

You can source the MERSEN A30QS300-4 fuse through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to worldwide destinations, ensuring reliable supply for your power electronics overcurrent protection needs.

How to select the correct MERSEN A30QS300-4 fuse for a circuit?

To select the MERSEN A30QS300-4, verify that your circuit's continuous current does not exceed 300 A and that the system voltage is within 300 V AC or 300 V DC. Ensure the bolt-on mounting matches your fuse holder and that the fast-acting characteristic aligns with your semiconductor 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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