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MERSEN Fuse: Class L, A4BQ Series, Bolt-On Body, Time-Delay, 800 A, 600 V AC - Time-Delay Bolt-On Fuses
MERSENTime-Delay Bolt-On Fuses

MERSEN Fuse: Class L, A4BQ Series, Bolt-On Body, Time-Delay, 800 A, 600 V AC

The MERSEN A4BQ800 is a Class L time-delay bolt-on fuse from the A4BQ series, rated at 800 A and 600 V AC / 500 V DC. This bolt-on body fuse is designed for overcurrent protection in industrial electrical systems.

SKU 3G-OTH-25909

Brand
MERSEN
Item
Fuse: Class L, A4BQ Series, Bolt-On Body, Time-Delay, 800 A, 600 V AC
Category
Time-Delay Bolt-On Fuses
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Payment
Invoicing in USD. Bank transfer (SWIFT) and corporate PO accepted.

Technical Specifications

MERSEN
Manufacturer Part Number
A4BQ800
Series
A4BQ
Type
A4BQ Series, Bolt-On Body, Time-Delay, 800 A
AC
600 V
DC
500 V

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

Product Description

The MERSEN A4BQ800 is a Class L time-delay bolt-on fuse from the A4BQ series, rated at 800 A and 600 V AC / 500 V DC. This bolt-on body fuse is designed for overcurrent protection in industrial electrical systems.

Frequently Asked Questions

What is the MERSEN A4BQ800 fuse used for?

The MERSEN A4BQ800 is a Class L time-delay bolt-on fuse rated 800 A and 600 V AC / 500 V DC. It provides overcurrent protection in industrial electrical systems, such as motor circuits, feeders, and switchgear, where high interrupting capacity and delayed response to inrush currents are required.

What are the specifications of the MERSEN A4BQ800 fuse?

The MERSEN A4BQ800 is a Class L, A4BQ series, bolt-on body, time-delay fuse rated 800 A, 600 V AC, and 500 V DC. It is designed for overcurrent protection in industrial applications. The manufacturer part number is A4BQ800.

Where to buy the MERSEN A4BQ800 fuse worldwide?

3G Electric supplies the MERSEN A4BQ800 fuse to customers worldwide. As a global industrial solutions provider, we handle full logistics, customs clearance, and delivery to your site. Contact us for a quote and lead time on this Class L time-delay bolt-on fuse.

How to select the correct MERSEN A4BQ800 fuse for an application?

To select the MERSEN A4BQ800, verify your system voltage (600 V AC or 500 V DC max) and continuous current (800 A). Ensure the bolt-on body matches your fuse holder. For time-delay applications like motor starting, confirm the inrush duration does not exceed the fuse's time-current curve. Consult a qualified engineer for coordination studies.

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 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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Compatible alternatives & equivalents

Cross-referenced by specification & description
MERSEN Fuse: Class L, A4BQ Series, Bolt-On Body, Time-Delay, 900 A, 600 V AC, 500 V DC (MPN A4BQ900)
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MERSEN Fuse: Class L, A4BQ Series, Bolt-On Body, Time-Delay, 900 A, 600 V AC, 500 V DC (MPN A4BQ900)
MERSEN Fuse: Class L, A4BQ Series, Bolt-On Body, Time-Delay, 1.4 kA, 600 V AC, 500 V DC (MPN A4BQ1400)
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MERSEN Fuse: Class L, A4BQ Series, Bolt-On Body, Time-Delay, 1.4 kA, 600 V AC, 500 V DC (MPN A4BQ1400)
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MERSEN Fuse: Class L, A4BQ Series, Bolt-On Body, Time-Delay, 1.8 kA, 600 V AC, 500 V DC (MPN A4BQ1800)
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MERSEN Fuse: Class L, A4BQ Series, Bolt-On Body, Time-Delay, 1 kA, 600 V AC, 500 V DC (MPN A4BQ1000)
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MERSEN Fuse: Class L, A4BQ Series, Bolt-On Body, Time-Delay, 1 kA, 600 V AC, 500 V DC (MPN A4BQ1000)
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MERSEN Fuse: Class L, A4BQ Series, Bolt-On Body, Time-Delay, 1.35 kA, 600 V AC, 500 V DC (MPN A4BQ1350)

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