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MERSEN A4BY Series Time-Delay Bolt-On Fuse, 600V AC/300V DC, 5 kA, MPN A4BY5000 - Time-Delay Bolt-On Fuses
MERSENTime-Delay Bolt-On Fuses

MERSEN A4BY Series Time-Delay Bolt-On Fuse, 600V AC/300V DC, 5 kA, MPN A4BY5000

The MERSEN A4BY Series Class L Time-Delay Bolt-On Fuse (MPN A4BY5000) is a 5 kA, 600 V AC, 300 V DC industrial fuse with a bolt-on body. This time-delay fuse is designed for overcurrent protection in electrical systems.

SKU 3G-OTH-27350

Brand
MERSEN
Item
A4BY Series Time-Delay Bolt-On Fuse, 600V AC/300V DC, 5 kA, MPN A4BY5000
Part Number
A4BY5000
Category
Time-Delay Bolt-On Fuses
Available to Order
Also known as:A4BY5000MERSEN
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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
A4BY5000
Series
A4BY
Type
A4BY Series, Bolt-On Body, Time-Delay, 5 kA
AC
600 V
DC
300 V

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

Product Description

The MERSEN A4BY Series Class L Time-Delay Bolt-On Fuse (MPN A4BY5000) is a 5 kA, 600 V AC, 300 V DC industrial fuse with a bolt-on body. This time-delay fuse is designed for overcurrent protection in electrical systems.

Frequently Asked Questions

What is the MERSEN A4BY5000 fuse used for?

The MERSEN A4BY5000 is a Class L time-delay bolt-on fuse used for overcurrent protection in industrial electrical systems. It handles high-energy circuits up to 600 V AC or 300 V DC, making it suitable for motor starters, feeders, and branch circuits where inrush tolerance is needed.

What are the specifications of the MERSEN A4BY5000 fuse?

The MERSEN A4BY5000 is a Class L, A4BY Series, time-delay bolt-on fuse rated at 5 kA interrupting capacity, 600 V AC, and 300 V DC. It features a bolt-on body design for secure mounting in fuse holders or disconnects. The manufacturer part number is A4BY5000.

Where to buy the MERSEN A4BY5000 fuse worldwide?

3G Electric supplies the MERSEN A4BY5000 fuse worldwide. As a global industrial distributor, we handle full logistics, customs clearance, and delivery to your location. Contact us for availability and lead time; we source and deliver this Class L time-delay fuse to any country.

How to select the correct MERSEN A4BY5000 fuse for an application?

To select the MERSEN A4BY5000, verify your system voltage does not exceed 600 V AC or 300 V DC and that the available fault current is below 5 kA. The time-delay characteristic allows temporary inrush, so it suits motor or transformer circuits. Always consult the MERSEN A4BY Series data sheet for coordination.

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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