Send a part number, a photo, or a whole BOM — we supply it and stand behind it. Worldwide shipping to 80+ countries.

3G Electric
RFQ CartGet a QuoteSign inSign up
MERSEN Semiconductor Fuse: A70Q Series, Fast-Acting, 100 A, 700 V AC - Fast-Acting Bolt-On Fuses
MERSENFast-Acting Bolt-On Fuses

MERSEN Semiconductor Fuse: A70Q Series, Fast-Acting, 100 A, 700 V AC

The MERSEN A70Q Series Semiconductor Fuse (MPN A70Q100-4) is a fast-acting bolt-on fuse rated at 100 A, 700 V AC, and 650 V DC. This AC/DC voltage-type fuse is designed for overcurrent protection in industrial equipment.

SKU 3G-OTH-25607

Brand
MERSEN
Item
Semiconductor Fuse: A70Q Series, Fast-Acting, 100 A, 700 V AC
Category
Fast-Acting Bolt-On Fuses
Available to Order
Trade pricing by quote — replies within 24h
Qty
WhatsApp an engineer
No account needed — your quote request goes straight to our engineers. A free account lets you track quotes and re-order faster.
Worldwide Shipping
Air & sea freight
Datasheet on Request
Technical specs
1-Day Quote
Replies within 24h

Technical Specifications

MERSEN
Manufacturer Part Number
A70Q100-4
Series
A70Q
Type
Fast-Acting, 100 A
AC
700 V
Voltage Type
AC/DC
DC DC Volt Rating
650 V
View Full Spec Sheet

Technical Documents

No technical documents available for this product.
Request documentation →
Not sure this is the right part? Get a recommendation.

Need installation or engineering help?

Installation, commissioning, maintenance plans, system design, and bundled product + service quotes — one team handles the full scope.
Talk to an engineer

Ask a question

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

Product Description

The MERSEN A70Q Series Semiconductor Fuse (MPN A70Q100-4) is a fast-acting bolt-on fuse rated at 100 A, 700 V AC, and 650 V DC. This AC/DC voltage-type fuse is designed for overcurrent protection in industrial equipment.

Frequently Asked Questions

What is the MERSEN A70Q100-4 semiconductor fuse used for?

The MERSEN A70Q100-4 is a fast-acting bolt-on fuse used for overcurrent protection of power semiconductors in industrial drives, inverters, and power supplies. It clears faults quickly to safeguard sensitive electronics in manufacturing and process equipment.

What are the specifications of the MERSEN A70Q100-4 fuse?

The MERSEN A70Q100-4 is a 100 A, 700 V AC / 650 V DC fast-acting semiconductor fuse from the A70Q series. It features a bolt-on design for secure mounting in industrial control panels and power conversion systems.

Where to buy the MERSEN A70Q100-4 fuse worldwide?

3G Electric supplies the MERSEN A70Q100-4 semiconductor fuse to customers worldwide. We handle full logistics, customs clearance, and delivery to your site. Contact us for a quote and lead time on this fast-acting bolt-on fuse.

How to select the right MERSEN A70Q series fuse for my application?

Select the MERSEN A70Q fuse based on your circuit's continuous current (100 A for this model), maximum voltage (700 V AC or 650 V DC), and the interrupting rating required. Always consult the manufacturer's data sheet for coordination with your semiconductor device.

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.

You might also need

Burners & Combustion →Pumps & Compressors →Spare Parts →All Products →

Similar products

Matched by specification & description
Semiconductor Fuse: A70Q Series, Fast-Acting, 150 A, 700 V AC, 650 V DC DC Volt Rating (MPN A70Q150-4). Key specifications — Series: A70Q; Brand: MERSEN; Voltage Type: AC/DC.
MERSEN
Semiconductor Fuse: A70Q Series, Fast-Acting, 150 A, 700 V AC, 650 V DC DC Volt Rating (MPN A70Q150-4). Key specifications — Series: A70Q; Brand: MERSEN; Voltage Type: AC/DC.
Semiconductor Fuse: A70Q Series, Fast-Acting, 200 A, 700 V AC, 650 V DC DC Volt Rating (MPN A70Q200-4). Key specifications — Series: A70Q; Brand: MERSEN; Voltage Type: AC/DC.
MERSEN
Semiconductor Fuse: A70Q Series, Fast-Acting, 200 A, 700 V AC, 650 V DC DC Volt Rating (MPN A70Q200-4). Key specifications — Series: A70Q; Brand: MERSEN; Voltage Type: AC/DC.
Semiconductor Fuse: A70Q Series, Fast-Acting, 350 A, 700 V AC, 650 V DC DC Volt Rating (MPN A70Q350-4). Key specifications — Series: A70Q; Brand: MERSEN; Voltage Type: AC/DC.
MERSEN
Semiconductor Fuse: A70Q Series, Fast-Acting, 350 A, 700 V AC, 650 V DC DC Volt Rating (MPN A70Q350-4). Key specifications — Series: A70Q; Brand: MERSEN; Voltage Type: AC/DC.
Semiconductor Fuse: A70QS Series, Fast-Acting, 100 A, 700 V AC, 700 V DC DC Volt Rating (MPN A70QS100-4). Key specifications — Series: A70QS; Brand: MERSEN; Voltage Type: AC/DC.
MERSEN
Semiconductor Fuse: A70QS Series, Fast-Acting, 100 A, 700 V AC, 700 V DC DC Volt Rating (MPN A70QS100-4). Key specifications — Series: A70QS; Brand: MERSEN; Voltage Type: AC/DC.
Semiconductor Fuse: A70Q Series, Fast-Acting, 600 A, 700 V AC, 650 V DC DC Volt Rating (MPN A70Q600-4). Key specifications — Series: A70Q; Brand: MERSEN; Voltage Type: AC/DC.
MERSEN
Semiconductor Fuse: A70Q Series, Fast-Acting, 600 A, 700 V AC, 650 V DC DC Volt Rating (MPN A70Q600-4). Key specifications — Series: A70Q; Brand: MERSEN; Voltage Type: AC/DC.
Semiconductor Fuse: A70QS Series, Fast-Acting, 200 A, 700 V AC, 700 V DC DC Volt Rating (MPN A70QS200-4K). Key specifications — Series: A70QS; Brand: MERSEN; Voltage Type: AC/DC.
MERSEN
Semiconductor Fuse: A70QS Series, Fast-Acting, 200 A, 700 V AC, 700 V DC DC Volt Rating (MPN A70QS200-4K). Key specifications — Series: A70QS; Brand: MERSEN; Voltage Type: AC/DC.

More from MERSEN

View all MERSEN parts →
Semiconductor Fuse: A30QS Series, Fast-Acting, 150 A, 300 V AC, 300 V DC DC Volt Rating (MPN A30QS150-4). Key specifications — Series: A30QS; Brand: MERSEN; Voltage Type: AC/DC.
MERSEN
Semiconductor Fuse: A30QS Series, Fast-Acting, 150 A, 300 V AC, 300 V DC DC Volt Rating (MPN A30QS150-4). Key specifications — Series: A30QS; Brand: MERSEN; Voltage Type: AC/DC.
Semiconductor Fuse: A60X Series, Fast-Acting, 60 A, 600 V AC, Non-Indicating (MPN A60X60-4). Key specifications — Series: A60X; Brand: MERSEN; Voltage Type: AC Only.
MERSEN
Semiconductor Fuse: A60X Series, Fast-Acting, 60 A, 600 V AC, Non-Indicating (MPN A60X60-4). Key specifications — Series: A60X; Brand: MERSEN; Voltage Type: AC Only.
Semiconductor Fuse: A70Q Series, Fast-Acting, 125 A, 700 V AC, 650 V DC DC Volt Rating (MPN A70Q125-4). Key specifications — Series: A70Q; Brand: MERSEN; Voltage Type: AC/DC.
MERSEN
Semiconductor Fuse: A70Q Series, Fast-Acting, 125 A, 700 V AC, 650 V DC DC Volt Rating (MPN A70Q125-4). Key specifications — Series: A70Q; Brand: MERSEN; Voltage Type: AC/DC.
Semiconductor Fuse: A15QS Series, Fast-Acting, 60 A, 150 V AC, 150 V DC DC Volt Rating (MPN A15QS60-4). Key specifications — Series: A15QS; Brand: MERSEN; Voltage Type: AC/DC.
MERSEN
Semiconductor Fuse: A15QS Series, Fast-Acting, 60 A, 150 V AC, 150 V DC DC Volt Rating (MPN A15QS60-4). Key specifications — Series: A15QS; Brand: MERSEN; Voltage Type: AC/DC.
MERSEN Fuse: A4J Series, Class J, Blade Body, Fast-Acting, 250 A, 600 V AC, 300 V DC, Non-Indicating (MPN A4J250). Key specifications — Series: A4J; Brand: MERSEN.
MERSEN
MERSEN Fuse: A4J Series, Class J, Blade Body, Fast-Acting, 250 A, 600 V AC, 300 V DC, Non-Indicating (MPN A4J250). Key specifications — Series: A4J; Brand: MERSEN.
Semiconductor Fuse: A60X Series, Fast-Acting, 200 A, 600 V AC, Non-Indicating (MPN A60X200-4). Key specifications — Series: A60X; Brand: MERSEN; Voltage Type: AC Only.
MERSEN
Semiconductor Fuse: A60X Series, Fast-Acting, 200 A, 600 V AC, Non-Indicating (MPN A60X200-4). Key specifications — Series: A60X; Brand: MERSEN; Voltage Type: AC Only.
Semiconductor Fuse: A30QS Series, Fast-Acting, 80 A, 300 V AC, 300 V DC DC Volt Rating (MPN A30QS80-4). Key specifications — Series: A30QS; Brand: MERSEN; Voltage Type: AC/DC.
MERSEN
Semiconductor Fuse: A30QS Series, Fast-Acting, 80 A, 300 V AC, 300 V DC DC Volt Rating (MPN A30QS80-4). Key specifications — Series: A30QS; Brand: MERSEN; Voltage Type: AC/DC.
Semiconductor Fuse: A70Q Series, Fast-Acting, 90 A, 700 V AC, 650 V DC DC Volt Rating (MPN A70Q90-4). Key specifications — Series: A70Q; Brand: MERSEN; Voltage Type: AC/DC.
MERSEN
Semiconductor Fuse: A70Q Series, Fast-Acting, 90 A, 700 V AC, 650 V DC DC Volt Rating (MPN A70Q90-4). Key specifications — Series: A70Q; Brand: MERSEN; Voltage Type: AC/DC.