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MERSEN Fuses: A30QS Series, 400 A, 300 V AC, 300 V DC DC Volt Rating - Very-Fast-Acting Bolt-On Square Fuses
MERSENVery-Fast-Acting Bolt-On Square Fuses

MERSEN Fuses: A30QS Series, 400 A, 300 V AC, 300 V DC DC Volt Rating

The MERSEN A30QS Series A30QS400-4IL is a very-fast-acting bolt-on square fuse rated at 400 A, 300 V AC, and 300 V DC. This indicating fuse is designed for AC/DC voltage applications.

SKU 3G-OTH-24332

Brand
MERSEN
Item
Fuses: A30QS Series, 400 A, 300 V AC, 300 V DC DC Volt Rating
Category
Very-Fast-Acting Bolt-On Square Fuses
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Technical Specifications

MERSEN
Manufacturer Part Number
A30QS400-4IL
Series
A30QS
Voltage Type
AC/DC
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MERSEN Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The MERSEN A30QS Series A30QS400-4IL is a very-fast-acting bolt-on square fuse rated at 400 A, 300 V AC, and 300 V DC. This indicating fuse is designed for AC/DC voltage applications.

Frequently Asked Questions

What is the MERSEN A30QS400-4IL fuse used for?

The MERSEN A30QS400-4IL is a very-fast-acting bolt-on square fuse rated 400 A, 300 V AC/DC. It protects sensitive power electronics, drives, and DC bus circuits from overcurrents. Its indicating feature allows quick visual identification of a blown fuse, reducing downtime in industrial control panels and power distribution systems.

What are the specifications of the MERSEN A30QS400-4IL?

The MERSEN A30QS400-4IL is part of the A30QS series, rated 400 A, 300 V AC and 300 V DC. It is a very-fast-acting, bolt-on square fuse with an indicating function. The voltage type is AC/DC, and the manufacturer part number is A30QS400-4IL. It is designed for overcurrent protection in high-speed switching applications.

Where to buy the MERSEN A30QS400-4IL worldwide?

3G Electric supplies the MERSEN A30QS400-4IL fuse to customers worldwide. As a global industrial solutions provider, we handle full logistics, customs clearance, and delivery to your location. Contact us for pricing and lead time on this very-fast-acting bolt-on square fuse for AC/DC applications.

How to select the correct MERSEN A30QS400-4IL fuse for an application?

To select the MERSEN A30QS400-4IL, verify your circuit’s continuous current does not exceed 400 A and the system voltage is within 300 V AC or DC. Ensure the bolt-on mounting style matches your fuse holder. This very-fast-acting fuse is ideal for protecting semiconductor devices; 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 very-fast-acting bolt-on square fuses. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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