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MERSEN A4BQ1900 Time-Delay Bolt-On Fuse, 1.9 kA, 600 V AC / 500 V DC - Time-Delay Bolt-On Fuses
MERSENTime-Delay Bolt-On Fuses

MERSEN A4BQ1900 Time-Delay Bolt-On Fuse, 1.9 kA, 600 V AC / 500 V DC

The MERSEN A4BQ1900 is a Class L time-delay bolt-on fuse from the A4BQ Series. It is rated for 1.9 kA at 600 V AC and 500 V DC, providing overcurrent protection in industrial circuits.

SKU 3G-OTH-26213

Brand
MERSEN
Item
A4BQ1900 Time-Delay Bolt-On Fuse, 1.9 kA, 600 V AC / 500 V DC
Part Number
A4BQ1900
Category
Time-Delay Bolt-On Fuses
Available to Order
Also known as:A4BQ1900MERSEN
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Technical Specifications

MERSEN
Manufacturer Part Number
A4BQ1900
Series
A4BQ
Type
A4BQ Series, Bolt-On Body, Time-Delay, 1.9 kA
AC
600 V
DC
500 V

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

Product Description

The MERSEN A4BQ1900 is a Class L time-delay bolt-on fuse from the A4BQ Series. It is rated for 1.9 kA at 600 V AC and 500 V DC, providing overcurrent protection in industrial circuits.

Frequently Asked Questions

What is the MERSEN A4BQ1900 fuse used for?

The MERSEN A4BQ1900 is a Class L time-delay bolt-on fuse used for overcurrent protection in industrial power distribution, motor control centers, and switchgear. Its 1.9 kA rating at 600 V AC or 500 V DC makes it suitable for high-current circuits requiring reliable fault isolation.

What are the specifications of the MERSEN A4BQ1900?

The MERSEN A4BQ1900 is a Class L time-delay bolt-on fuse from the A4BQ Series. It is rated for 1.9 kA at 600 V AC and 500 V DC. The bolt-on body design ensures secure mounting in fuse holders. MERSEN is the OEM brand for this industrial fuse.

Where to buy the MERSEN A4BQ1900 worldwide?

3G Electric supplies the MERSEN A4BQ1900 fuse worldwide. As a global industrial equipment distributor since 1990, we handle full logistics, customs clearance, and delivery to your site. Contact us for availability and lead time on this Class L time-delay fuse.

How to select the correct MERSEN A4BQ1900 fuse for an application?

Select the MERSEN A4BQ1900 by verifying your circuit's voltage (600 V AC or 500 V DC max) and continuous current (1.9 kA). Ensure the fuse holder accepts Class L bolt-on bodies. For time-delay applications like motor starting, confirm the inrush duration does not exceed the fuse's time-current curve.

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.
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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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