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MERSEN A4BQ4000 Time-Delay Bolt-On Fuse, 4 kA, 600 V AC, 500 V DC - Time-Delay Bolt-On Fuses
MERSENTime-Delay Bolt-On Fuses

MERSEN A4BQ4000 Time-Delay Bolt-On Fuse, 4 kA, 600 V AC, 500 V DC

The MERSEN A4BQ4000 is a Class L, time-delay bolt-on fuse from the A4BQ Series. It is rated for 4 kA at 600 V AC and 500 V DC.

SKU 3G-OTH-26682

Brand
MERSEN
Item
A4BQ4000 Time-Delay Bolt-On Fuse, 4 kA, 600 V AC, 500 V DC
Part Number
A4BQ4000
Category
Time-Delay Bolt-On Fuses
Available to Order
Also known as:A4BQ4000MERSEN
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Technical Specifications

MERSEN
Manufacturer Part Number
A4BQ4000
Series
A4BQ
Type
A4BQ Series, Bolt-On Body, Time-Delay, 4 kA
AC
600 V
DC
500 V

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

Product Description

The MERSEN A4BQ4000 is a Class L, time-delay bolt-on fuse from the A4BQ Series. It is rated for 4 kA at 600 V AC and 500 V DC.

Frequently Asked Questions

What is the MERSEN A4BQ4000 fuse used for?

The MERSEN A4BQ4000 is a Class L, time-delay bolt-on fuse used for overcurrent protection in industrial power distribution, motor control centers, and switchgear. Its 4 kA rating at 600 V AC and 500 V DC makes it suitable for high-fault-current applications requiring reliable, delayed response to inrush currents.

What are the specifications of the MERSEN A4BQ4000 fuse?

The MERSEN A4BQ4000 is a Class L, time-delay bolt-on fuse from the A4BQ Series. It is rated for 4 kA at 600 V AC and 500 V DC. The bolt-on body design ensures secure mounting in fuse holders. The manufacturer part number is A4BQ4000.

Where to buy the MERSEN A4BQ4000 fuse worldwide?

You can source the MERSEN A4BQ4000 fuse through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to worldwide destinations. Contact us for availability and lead time; we supply genuine MERSEN A4BQ Series fuses to industrial buyers globally.

How to select the correct MERSEN A4BQ4000 fuse for an application?

To select the MERSEN A4BQ4000, verify your system voltage (600 V AC or 500 V DC max) and available fault current (up to 4 kA). Ensure the bolt-on body matches your fuse holder. The time-delay characteristic is ideal for motor or transformer circuits with high inrush. Always consult the MERSEN A4BQ Series datasheet for coordination and ampacity limits.

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 time-delay 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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