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MERSEN A30QS70-4 Fast-Acting Bolt-On Fuse, 70 A, 300 V AC/DC - Fast-Acting Bolt-On Fuses
MERSENFast-Acting Bolt-On Fuses

MERSEN A30QS70-4 Fast-Acting Bolt-On Fuse, 70 A, 300 V AC/DC

The MERSEN A30QS Series is a fast-acting bolt-on fuse designed for semiconductor protection. This specific model, part number A30QS70-4, is rated for 70 A and 300 V AC/DC. It is a 300 V DC volt-rated device from the…

SKU 3G-OTH-27708

Also listed as: A30QS704 · A30QS70 4

Brand
MERSEN
Item
A30QS70-4 Fast-Acting Bolt-On Fuse, 70 A, 300 V AC/DC
Part Number
A30QS70-4
Category
Fast-Acting Bolt-On Fuses
Available to Order
Also known as:A30QS70-4MERSEN
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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
A30QS70-4
Series
A30QS
Type
Fast-Acting, 70 A
AC
300 V
Voltage Type
AC/DC
DC DC Volt Rating
300 V

Technical Documents

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

Product Description

The MERSEN A30QS Series is a fast-acting bolt-on fuse designed for semiconductor protection. This specific model, part number A30QS70-4, is rated for 70 A and 300 V AC/DC. It is a 300 V DC volt-rated device from the A30QS series.

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 A30QS70-4 fuse used for?

The MERSEN A30QS70-4 is a fast-acting bolt-on fuse designed for semiconductor protection. It safeguards sensitive electronic components like diodes, thyristors, and IGBTs from overcurrents in power conversion equipment, drives, and UPS systems. Its 300 V AC/DC rating makes it suitable for both AC and DC circuits.

What are the specifications of the MERSEN A30QS70-4?

The MERSEN A30QS70-4 is a 70 A, 300 V AC/DC fast-acting bolt-on fuse from the A30QS series. It is a semiconductor protection fuse with a DC voltage rating of 300 V DC. The manufacturer part number is A30QS70-4, and it is designed for bolt-on mounting in industrial equipment.

Where to buy the MERSEN A30QS70-4 worldwide?

3G Electric supplies the MERSEN A30QS70-4 semiconductor fuse worldwide. As a global industrial equipment distributor established in 1990, 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 globally.

How to select the correct MERSEN A30QS fuse for my application?

Select the MERSEN A30QS fuse based on your circuit's continuous current (70 A for this model) and voltage rating (300 V AC/DC). Ensure the fuse's interrupting rating exceeds the available fault current. For semiconductor protection, choose a fast-acting design like the A30QS series to limit let-through energy. Consult MERSEN application notes for 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.
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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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