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MERSEN A50P Series Fast-Acting Bolt-On Fuse, 1.2 kA, 500 V AC/DC, A50QS1200-4 - Fast-Acting Bolt-On Fuses
MERSENFast-Acting Bolt-On Fuses

MERSEN A50P Series Fast-Acting Bolt-On Fuse, 1.2 kA, 500 V AC/DC, A50QS1200-4

The MERSEN A50P Series Semiconductor Fuse (MPN A50QS1200-4) is a fast-acting bolt-on fuse rated for 1.2 kA at 500 V AC and 500 V DC. This AC/DC voltage type fuse is designed for overcurrent protection in industrial…

SKU 3G-OTH-28100

Also listed as: A50QS12004 · A50QS1200 4

Brand
MERSEN
Item
A50P Series Fast-Acting Bolt-On Fuse, 1.2 kA, 500 V AC/DC, A50QS1200-4
Part Number
A50QS1200-4
Category
Fast-Acting Bolt-On Fuses
Available to Order
Also known as:A50QS1200-4MERSEN
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Technical Specifications

MERSEN
Manufacturer Part Number
A50QS1200-4
Series
A50P
Type
Fast-Acting, 1.2 kA
AC
500 V
Voltage Type
AC/DC
DC DC Volt Rating
500 V

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3G Electric (S) Pte. Ltd. — Singapore

Product Description

The MERSEN A50P Series Semiconductor Fuse (MPN A50QS1200-4) is a fast-acting bolt-on fuse rated for 1.2 kA at 500 V AC and 500 V DC. This AC/DC voltage type fuse is designed for overcurrent protection in industrial equipment.

Frequently Asked Questions

What is the MERSEN A50P Series semiconductor fuse used for?

The MERSEN A50P Series fast-acting bolt-on fuse (MPN A50QS1200-4) provides overcurrent protection for industrial power electronics, including variable frequency drives, rectifiers, and UPS systems. Its 1.2 kA rating at 500 V AC/DC makes it suitable for high-power semiconductor circuits where rapid fault clearing is critical.

What are the specifications of the MERSEN A50QS1200-4 fuse?

The MERSEN A50QS1200-4 is a fast-acting bolt-on fuse from the A50P Series. It is rated for 1.2 kA at 500 V AC and 500 V DC, with an AC/DC voltage type. The manufacturer part number is A50QS1200-4, and it is designed for overcurrent protection in industrial equipment.

Where to buy MERSEN A50P fuses worldwide?

3G Electric supplies the MERSEN A50P Series fuse (A50QS1200-4) worldwide. As a global industrial equipment distributor, we handle full logistics, customs clearance, and delivery to your site. Contact us for availability and lead time; we source and deliver this fast-acting bolt-on fuse to any location.

How to select the correct MERSEN A50P fuse for an application?

To select the correct MERSEN A50P fuse, match the voltage rating (500 V AC/DC) and current rating (1.2 kA) to your circuit's requirements. Ensure the fast-acting characteristic aligns with the semiconductor's surge tolerance. Consult the fuse's I²t value and mounting style (bolt-on) for proper coordination with your equipment.

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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