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MERSEN Semiconductor Fuse: A70QS Series, Fast-Acting, 80 A, 700 V AC - Fast-Acting Bolt-On Fuses
MERSENFast-Acting Bolt-On Fuses

MERSEN Semiconductor Fuse: A70QS Series, Fast-Acting, 80 A, 700 V AC

The MERSEN A70QS Series Semiconductor Fuse (MPN A70QS80-4) is a fast-acting bolt-on fuse rated for 80 A at 700 V AC and 700 V DC. This AC/DC voltage type fuse is designed for semiconductor protection in industrial…

SKU 3G-OTH-25473

Also listed as: A70QS804 · A70QS80 4

Brand
MERSEN
Item
Semiconductor Fuse: A70QS Series, Fast-Acting, 80 A, 700 V AC
Category
Fast-Acting Bolt-On Fuses
Available to Order
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Local availability & support — the Philippines

Delivery
5–8 business days door-to-door; Bureau of Customs clearance typically 2–4 business days.
Payment
Invoicing in PHP or USD. Bank transfer and corporate PO accepted.
Ships to
Manila, Quezon City, Cebu, Davao, Batangas

Technical Specifications

MERSEN
Manufacturer Part Number
A70QS80-4
Series
A70QS
Type
Fast-Acting, 80 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 A70QS80-4) is a fast-acting bolt-on fuse rated for 80 A at 700 V AC and 700 V DC. This AC/DC voltage type fuse is designed for semiconductor protection in industrial equipment.

Supplied to the Philippines — compatible with 60 Hz installations. DHL Express delivery to Manila, Quezon City, Cebu, customs and duties handled door-to-door.

Frequently Asked Questions

What is the MERSEN A70QS80-4 semiconductor fuse used for?

The MERSEN A70QS80-4 is a fast-acting bolt-on fuse used to protect semiconductor devices like diodes, thyristors, and IGBTs in industrial power supplies, drives, and converters. It safely interrupts overcurrents in AC/DC circuits up to 700 V.

What are the specifications of the MERSEN A70QS80-4 fuse?

The MERSEN A70QS80-4 is a 80 A, fast-acting bolt-on fuse rated for 700 V AC and 700 V DC. It belongs to the A70QS series and is designed for semiconductor protection. The voltage type is AC/DC, and the manufacturer part number is A70QS80-4.

Where to buy the MERSEN A70QS80-4 fuse worldwide?

3G Electric supplies the MERSEN A70QS80-4 fuse worldwide. As a global industrial solutions provider, we handle full logistics, customs clearance, and delivery to your facility. Contact us for a quote and lead time on this fast-acting semiconductor fuse.

How to select the right MERSEN A70QS80-4 fuse for an application?

To select the MERSEN A70QS80-4, match the 80 A rating and 700 V AC/DC voltage to your circuit's operating current and voltage. Ensure the fast-acting characteristic suits your semiconductor's I²t withstand capability. Consult MERSEN's application guide for coordination with upstream protection.

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
Semiconductor Fuse: A70QS Series, Fast-Acting, 800 A, 700 V AC, 700 V DC DC Volt Rating (MPN A70QS800-4)
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Semiconductor Fuse: A70QS Series, Fast-Acting, 800 A, 700 V AC, 700 V DC DC Volt Rating (MPN A70QS800-4)
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Semiconductor Fuse: A70QS Series, Fast-Acting, 150 A, 700 V AC, 700 V DC DC Volt Rating (MPN A70QS150-4K)
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Semiconductor Fuse: A70Q Series, Fast-Acting, 70 A, 700 V AC, 650 V DC DC Volt Rating (MPN A70Q70-4)
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Semiconductor Fuse: A70QS Series, Fast-Acting, 175 A, 700 V AC, 700 V DC DC Volt Rating (MPN A70QS175-4)
Fast-acting bolt-on fuse rated 300 A at 700 V AC and 700 V DC. Part of the A70QS series, designed for overcurrent protection in power electronic circuits such as variable frequency drives, UPS systems, and DC power supplies
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Fast-acting bolt-on fuse rated 300 A at 700 V AC and 700 V DC. Part of the A70QS series, designed for overcurrent protection in power electronic circuits such as variable frequency drives, UPS systems, and DC power supplies
Semiconductor Fuse: A70QS Series, Fast-Acting, 200 A, 700 V AC, 700 V DC DC Volt Rating (MPN A70QS200-4)
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Semiconductor Fuse: A70QS Series, Fast-Acting, 200 A, 700 V AC, 700 V DC DC Volt Rating (MPN A70QS200-4)

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