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MERSEN Semiconductor Fuse: A50P Series, Fast-Acting, 75 A, 500 V AC - Fast-Acting Bolt-On Fuses
MERSENFast-Acting Bolt-On Fuses

MERSEN Semiconductor Fuse: A50P Series, Fast-Acting, 75 A, 500 V AC

The MERSEN A50P Series Semiconductor Fuse is a fast-acting bolt-on fuse designed for AC/DC circuit protection. This model, MPN A50QS75-4Y, is rated at 75 A with a voltage rating of 500 V AC and 500 V DC. It provides…

SKU 3G-OTH-25342

Also listed as: A50QS754Y · A50QS75 4Y

Brand
MERSEN
Item
Semiconductor Fuse: A50P Series, Fast-Acting, 75 A, 500 V AC
Category
Fast-Acting Bolt-On Fuses
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Local availability & support — Singapore

Local office
20 Woodlands Link #09-05, Singapore 738733
Phone
+65 8878 8355
Delivery
Same-day or next-business-day delivery within Singapore for in-stock items; 7–14 days for factory-order parts from Europe.
Payment
Invoicing in SGD. PayNow, bank transfer, and corporate PO accepted.
Ships to
Singapore

Technical Specifications

MERSEN
Manufacturer Part Number
A50QS75-4Y
Series
A50P
Type
Fast-Acting, 75 A
AC
500 V
Voltage Type
AC/DC
DC DC Volt Rating
500 V

Technical Documents

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

Product Description

The MERSEN A50P Series Semiconductor Fuse is a fast-acting bolt-on fuse designed for AC/DC circuit protection. This model, MPN A50QS75-4Y, is rated at 75 A with a voltage rating of 500 V AC and 500 V DC. It provides overcurrent protection for power electronic applications.

Frequently Asked Questions

What is the MERSEN A50P Series semiconductor fuse used for?

The MERSEN A50P Series fast-acting bolt-on fuse protects power electronic circuits from overcurrent. It is commonly used in AC/DC drives, inverters, and UPS systems where rapid fault clearing is critical to safeguard sensitive semiconductor components.

What are the specifications of the MERSEN A50QS75-4Y fuse?

The MERSEN A50QS75-4Y is a 75 A, 500 V AC/500 V DC rated fast-acting bolt-on fuse from the A50P series. It provides overcurrent protection for power electronic applications and is designed for reliable AC/DC circuit protection.

Where to buy MERSEN A50P fuses worldwide?

3G Electric supplies MERSEN A50P series fuses worldwide. As a global industrial distributor, we handle full logistics, customs clearance, and delivery to your location. Contact us to source the A50QS75-4Y or other MERSEN semiconductor fuses for your project.

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

Select the MERSEN A50P fuse based on the circuit's continuous current rating (75 A for this model) and voltage type (AC/DC up to 500 V). Ensure the fuse's interrupting rating exceeds the available fault current. Consult the manufacturer's data sheet 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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