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MERSEN A50QS70-4 Fast-Acting Bolt-On Fuse, 70 A, 500 V AC/DC - Fast-Acting Bolt-On Fuses
MERSENFast-Acting Bolt-On Fuses

MERSEN A50QS70-4 Fast-Acting Bolt-On Fuse, 70 A, 500 V AC/DC

The MERSEN A50P Series Semiconductor Fuse (MPN A50QS70-4) is a fast-acting bolt-on fuse rated at 70 A and 500 V AC/500 V DC. Designed for AC/DC voltage types, this fuse provides overcurrent protection for…

SKU 3G-OTH-25323

Also listed as: A50QS704 · A50QS70 4

Brand
MERSEN
Item
A50QS70-4 Fast-Acting Bolt-On Fuse, 70 A, 500 V AC/DC
Part Number
A50QS70-4
Category
Fast-Acting Bolt-On Fuses
Available to Order
Also known as:A50QS70-4MERSEN
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Technical Specifications

MERSEN
Manufacturer Part Number
A50QS70-4
Series
A50P
Type
Fast-Acting, 70 A
AC
500 V
Voltage Type
AC/DC
DC DC Volt Rating
500 V

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

Product Description

The MERSEN A50P Series Semiconductor Fuse (MPN A50QS70-4) is a fast-acting bolt-on fuse rated at 70 A and 500 V AC/500 V DC. Designed for AC/DC voltage types, this fuse provides overcurrent protection for semiconductor circuits.

Frequently Asked Questions

What is the MERSEN A50P Series semiconductor fuse used for?

The MERSEN A50P Series fast-acting bolt-on fuse (MPN A50QS70-4) protects semiconductor circuits from overcurrent in AC/DC power systems. It is commonly applied in variable frequency drives, power supplies, and rectifiers where rapid fault clearing is required to safeguard sensitive components.

What are the specifications of the MERSEN A50QS70-4 fuse?

The MERSEN A50QS70-4 is a 70 A, fast-acting bolt-on fuse rated at 500 V AC and 500 V DC. It belongs to the A50P Series and is designed for AC/DC voltage types. The manufacturer part number is A50QS70-4, and it provides overcurrent protection for semiconductor circuits.

Where to buy MERSEN A50QS70-4 fuses worldwide?

3G Electric supplies the MERSEN A50QS70-4 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 fuse to any country.

How to select the correct MERSEN A50P fuse for a semiconductor application?

To select the correct MERSEN A50P fuse, match the voltage rating (500 V AC/DC) and current rating (70 A) to your circuit requirements. Ensure the fast-acting characteristic aligns with the semiconductor's surge withstand. Bolt-on mounting must fit the fuse holder. Consult the datasheet for I²t and breaking capacity.

Used in

Common applications for MERSEN
Industrial control panels — Mersen USCC1 and USCC2 UL Class CC fuse blocks for DIN rail mounting and finger-safe branch circuit protection.
Motor starters — Mersen ATQ time-delay fuses and DAR0 R-rated fuses for motor overload and short-circuit protection.
Power supplies and instrumentation — Mersen GGM and GSB fast-acting cylindrical fuses for overcurrent protection in compact electronic circuits.
DC systems — Mersen A30QS very-fast-acting square fuses rated 300 V DC for semiconductor and DC equipment protection.
Medium-voltage distribution — Mersen DAR0 R-rated fuses rated 5.08 kV AC for general-purpose overcurrent protection with visual indication.
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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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