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MERSEN Semiconductor Fuse: A70QS Series, Fast-Acting, 100 A, 700 V AC - Fast-Acting Bolt-On Fuses
MERSENFast-Acting Bolt-On Fuses

MERSEN Semiconductor Fuse: A70QS Series, Fast-Acting, 100 A, 700 V AC

The MERSEN A70QS Series Semiconductor Fuse (MPN A70QS100-4) is a fast-acting bolt-on fuse rated for 100 A at 700 V AC and 700 V DC. This AC/DC voltage-type fuse is designed for overcurrent protection in power…

SKU 3G-OTH-25620

Also listed as: A70QS1004 · A70QS100 4

Brand
MERSEN
Item
Semiconductor Fuse: A70QS Series, Fast-Acting, 100 A, 700 V AC
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
A70QS100-4
Series
A70QS
Type
Fast-Acting, 100 A
AC
700 V
Voltage Type
AC/DC
DC DC Volt Rating
700 V

Technical Documents

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

Product Description

The MERSEN A70QS Series Semiconductor Fuse (MPN A70QS100-4) is a fast-acting bolt-on fuse rated for 100 A at 700 V AC and 700 V DC. This AC/DC voltage-type fuse is designed for overcurrent protection in power electronic circuits.

Frequently Asked Questions

What is the MERSEN A70QS100-4 semiconductor fuse used for?

The MERSEN A70QS100-4 is a fast-acting bolt-on fuse designed for overcurrent protection in power electronic circuits. It is commonly used in AC/DC applications such as variable frequency drives, rectifiers, and UPS systems, where rapid response to fault currents is critical to protect sensitive semiconductor components.

What are the specifications of the MERSEN A70QS100-4 fuse?

The MERSEN A70QS100-4 is a 100 A, 700 V AC and 700 V DC fast-acting bolt-on fuse from the A70QS series. It features an AC/DC voltage type and is designed for overcurrent protection in power electronics. The manufacturer part number is A70QS100-4, and it is supplied by 3G Electric.

Where to buy the MERSEN A70QS100-4 fuse worldwide?

3G Electric supplies the MERSEN A70QS100-4 semiconductor fuse worldwide. As a global industrial equipment distributor, we handle full logistics, customs clearance, and delivery to your location. Contact us for availability and lead time; we source and deliver this fast-acting bolt-on fuse to any country.

How to select the correct MERSEN A70QS series fuse for your application?

To select the correct MERSEN A70QS fuse, match the voltage rating (700 V AC/DC) and current rating (e.g., 100 A for the A70QS100-4) to your circuit requirements. Ensure the fast-acting characteristic suits semiconductor protection. Consult the fuse's I²t and breaking capacity data from MERSEN's datasheet for proper 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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