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MERSEN Semiconductor Fuse: A30QS Series, Fast-Acting, 75 A, 300 V AC - Fast-Acting Bolt-On Fuses
MERSENFast-Acting Bolt-On Fuses

MERSEN Semiconductor Fuse: A30QS Series, Fast-Acting, 75 A, 300 V AC

The MERSEN A30QS Series is a fast-acting bolt-on semiconductor fuse, model A30QS75-4L, rated for 75 A at 300 V AC and 300 V DC. This AC/DC voltage type fuse is designed for overcurrent protection in power electronic…

SKU 3G-OTH-27834

Brand
MERSEN
Item
Semiconductor Fuse: A30QS Series, Fast-Acting, 75 A, 300 V AC
Category
Fast-Acting Bolt-On Fuses
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Technical Specifications

MERSEN
Manufacturer Part Number
A30QS75-4L
Series
A30QS
Type
Fast-Acting, 75 A
AC
300 V
Voltage Type
AC/DC
DC DC Volt Rating
300 V
View Full Spec Sheet

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

Product Description

The MERSEN A30QS Series is a fast-acting bolt-on semiconductor fuse, model A30QS75-4L, rated for 75 A at 300 V AC and 300 V DC. This AC/DC voltage type fuse is designed for overcurrent protection in power electronic circuits.

Frequently Asked Questions

What is the MERSEN A30QS75-4L semiconductor fuse used for?

The MERSEN A30QS75-4L is a fast-acting bolt-on fuse used for overcurrent protection in power electronic circuits, such as variable frequency drives, rectifiers, and UPS systems. It protects sensitive semiconductor devices from short circuits and overloads in AC or DC applications up to 300 V.

What are the specifications of the MERSEN A30QS75-4L fuse?

The MERSEN A30QS75-4L is part of the A30QS Series, rated 75 A at 300 V AC and 300 V DC. It is a fast-acting, bolt-on semiconductor fuse with AC/DC voltage type. The manufacturer part number is A30QS75-4L, and it is designed for high-speed overcurrent protection in power electronics.

Where to buy the MERSEN A30QS75-4L fuse worldwide?

3G Electric supplies the MERSEN A30QS75-4L fuse worldwide. As a global industrial equipment distributor since 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 semiconductor fuse globally.

How to select the correct MERSEN A30QS75-4L fuse for an application?

To select the MERSEN A30QS75-4L, verify the circuit voltage does not exceed 300 V AC or DC and the continuous current is at or below 75 A. Ensure the fuse is fast-acting for semiconductor protection. Confirm the bolt-on mounting style matches your fuse holder. Consult the manufacturer's data sheet for 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.

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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