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MERSEN A70QS450-4K Fast-Acting Bolt-On Fuse, 450 A, 700 V AC/DC, Non-Indicating - Fast-Acting Bolt-On Fuses
MERSENFast-Acting Bolt-On Fuses

MERSEN A70QS450-4K Fast-Acting Bolt-On Fuse, 450 A, 700 V AC/DC, Non-Indicating

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
A70QS450-4K Fast-Acting Bolt-On Fuse, 450 A, 700 V AC/DC, Non-Indicating
Category
Fast-Acting Bolt-On Fuses
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Local availability & support — Singapore

Local office
20 Woodlands Link #09-05, Singapore 738733
Phone
+65 8878 8355
Delivery
Same-day or next-business-day delivery within Singapore for in-stock items; 7–14 days for factory-order parts from Europe.
Payment
Invoicing in SGD. PayNow, bank transfer, and corporate PO accepted.
Ships to
Singapore

Technical Specifications

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

Technical Documents

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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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Fast-acting bolt-on fuse from the A70QS series, rated 50 A, 690 V AC, and 700 V DC. Provides overcurrent protection for power electronic circuits such as variable frequency drives, rectifiers, and UPS systems. Designed for AC/DC applications to safeguard sensitive semiconductor devices

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