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MERSEN Fuses: A70QS Series, 450 A, 700 V AC, 700 V DC DC Volt Rating - Fast-Acting Bolt-On Fuses
MERSENFast-Acting Bolt-On Fuses

MERSEN Fuses: A70QS Series, 450 A, 700 V AC, 700 V DC DC Volt Rating

The MERSEN A70QS Series A70QS450-4K is a fast-acting bolt-on fuse rated for 450 A at 700 V AC and 700 V DC. This non-indicating fuse is designed for AC/DC voltage applications.

SKU 3G-OTH-27189

Also listed as: A70QS4504K · A70QS450 4K

Brand
MERSEN
Item
Fuses: A70QS Series, 450 A, 700 V AC, 700 V DC DC Volt Rating
Category
Fast-Acting Bolt-On Fuses
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Technical Specifications

MERSEN
Manufacturer Part Number
A70QS450-4K
Series
A70QS
Voltage Type
AC/DC

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

Product Description

The MERSEN A70QS Series A70QS450-4K is a fast-acting bolt-on fuse rated for 450 A at 700 V AC and 700 V DC. This non-indicating fuse is designed for AC/DC voltage applications.

Frequently Asked Questions

What is the MERSEN A70QS450-4K fuse used for?

The MERSEN A70QS450-4K is a fast-acting bolt-on fuse used for overcurrent protection in AC/DC power systems. It is commonly applied in industrial equipment, motor drives, and power supplies where high current ratings up to 450 A and voltage ratings of 700 V AC/DC are required.

What are the specifications of the MERSEN A70QS450-4K fuse?

The MERSEN A70QS450-4K is part of the A70QS series, rated for 450 A at 700 V AC and 700 V DC. It is a non-indicating, fast-acting bolt-on fuse designed for AC/DC voltage applications. The manufacturer part number is A70QS450-4K.

Where to buy the MERSEN A70QS450-4K fuse worldwide?

You can source the MERSEN A70QS450-4K fuse through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to worldwide destinations. Contact us for availability and lead time on this fast-acting bolt-on fuse.

How to select the correct MERSEN A70QS450-4K fuse for an application?

To select the correct MERSEN A70QS450-4K fuse, verify your system's voltage type (AC/DC) and ensure the voltage rating does not exceed 700 V. The continuous current rating must be 450 A or less. Confirm the fuse is fast-acting and bolt-on style for proper mounting and protection coordination.

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
Fuses: A70QS Series, 80 A, 700 V AC, 700 V DC DC Volt Rating, Indicating (MPN A70QS80-4IL)
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Fuses: A70QS Series, 80 A, 700 V AC, 700 V DC DC Volt Rating, Indicating (MPN A70QS80-4IL)
Fast-acting bolt-on fuse rated 800 A at 700 V AC and 700 V DC. Features indicating function for visual blown-fuse indication. Suitable for overcurrent protection in industrial equipment such as DC drives and power supplies
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Fast-acting bolt-on fuse rated 800 A at 700 V AC and 700 V DC. Features indicating function for visual blown-fuse indication. Suitable for overcurrent protection in industrial equipment such as DC drives and power supplies
Fuses: A70QS Series, 175 A, 700 V AC, 700 V DC DC Volt Rating, Indicating (MPN A70QS175-4IL)
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Fuses: A70QS Series, 175 A, 700 V AC, 700 V DC DC Volt Rating, Indicating (MPN A70QS175-4IL)
Fast-acting bolt-on fuse from the A70QS series, rated 40 A, 690 V AC, and 700 V DC. Provides overcurrent protection for power electronic circuits such as variable frequency drives, rectifiers, and UPS systems
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Fast-acting bolt-on fuse from the A70QS series, rated 40 A, 690 V AC, and 700 V DC. Provides overcurrent protection for power electronic circuits such as variable frequency drives, rectifiers, and UPS systems
Semiconductor Fuse: A70QS Series, Fast-Acting, 80 A, 700 V AC, 700 V DC DC Volt Rating (MPN A70QS80-22F)
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Semiconductor Fuse: A70QS Series, Fast-Acting, 80 A, 700 V AC, 700 V DC DC Volt Rating (MPN A70QS80-22F)
Semiconductor Fuse: A70QS Series, Fast-Acting, 50 A, 690 V AC, 700 V DC DC Volt Rating (MPN A70QS50-14F)
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Semiconductor Fuse: A70QS Series, Fast-Acting, 50 A, 690 V AC, 700 V DC DC Volt Rating (MPN A70QS50-14F)

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