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MERSEN Fuse: Class L, A4BQ Series, Bolt-On Body, Time-Delay, 1.8 kA, 600 V AC - Time-Delay Bolt-On Fuses
MERSENTime-Delay Bolt-On Fuses

MERSEN Fuse: Class L, A4BQ Series, Bolt-On Body, Time-Delay, 1.8 kA, 600 V AC

The MERSEN A4BQ1800 is a Class L time-delay bolt-on fuse from the A4BQ Series, rated at 1.8 kA, 600 V AC, and 500 V DC. This bolt-on body fuse is designed for overcurrent protection in industrial electrical systems.

SKU 3G-OTH-26190

Brand
MERSEN
Item
Fuse: Class L, A4BQ Series, Bolt-On Body, Time-Delay, 1.8 kA, 600 V AC
Category
Time-Delay 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
A4BQ1800
Series
A4BQ
Type
A4BQ Series, Bolt-On Body, Time-Delay, 1.8 kA
AC
600 V
DC
500 V

Technical Documents

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

Product Description

The MERSEN A4BQ1800 is a Class L time-delay bolt-on fuse from the A4BQ Series, rated at 1.8 kA, 600 V AC, and 500 V DC. This bolt-on body fuse is designed for overcurrent protection in industrial electrical systems.

Frequently Asked Questions

What is the MERSEN A4BQ1800 fuse used for?

The MERSEN A4BQ1800 is a Class L time-delay bolt-on fuse used for overcurrent protection in industrial electrical systems. It is rated at 1.8 kA, 600 V AC, and 500 V DC, making it suitable for high-power applications such as switchboards, motor control centers, and feeder circuits.

What are the specifications of the MERSEN A4BQ1800?

The MERSEN A4BQ1800 is a Class L time-delay bolt-on fuse from the A4BQ Series. Its key specifications include a current rating of 1.8 kA, voltage rating of 600 V AC and 500 V DC, and a bolt-on body design for secure mounting. The manufacturer part number is A4BQ1800.

Where to buy the MERSEN A4BQ1800 worldwide?

You can source the MERSEN A4BQ1800 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 on this MERSEN A4BQ Series fuse.

How to install the MERSEN A4BQ1800 fuse?

To install the MERSEN A4BQ1800, ensure the circuit is de-energized. Align the bolt-on body with the fuse holder and tighten the mounting bolts to the manufacturer's recommended torque. Verify the fuse rating matches the circuit requirements. Always follow standard electrical safety procedures and consult the MERSEN installation guide.

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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MERSEN Fuse: Class L, A4BQ Series, Bolt-On Body, Time-Delay, 800 A, 600 V AC, 500 V DC (MPN A4BQ800)
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