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MERSEN Fuse: Class L, A4BY Series, Bolt-On Body, Time-Delay, 5 kA, 600 V AC - Time-Delay Bolt-On Fuses
MERSENTime-Delay Bolt-On Fuses

MERSEN Fuse: Class L, A4BY Series, Bolt-On Body, Time-Delay, 5 kA, 600 V AC

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
Fuse: Class L, A4BY Series, Bolt-On Body, Time-Delay, 5 kA, 600 V AC
Category
Time-Delay Bolt-On Fuses
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Payment
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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
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, A4BY Series, Bolt-On Body, Time-Delay, 6,000 A, 600 V AC, 300 V DC (MPN A4BY6000)
MERSEN
MERSEN Fuse: Class L, A4BY Series, Bolt-On Body, Time-Delay, 6,000 A, 600 V AC, 300 V DC (MPN A4BY6000)
MERSEN Fuse: Class L, A4BY Series, Bolt-On Body, Time-Delay, 1.5 kA, 600 V AC, 300 V DC (MPN A4BY1500)
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MERSEN Fuse: Class L, A4BY Series, Bolt-On Body, Time-Delay, 1.5 kA, 600 V AC, 300 V DC (MPN A4BY1500)
MERSEN Fuse: Class L, A4BY Series, Bolt-On Body, Time-Delay, 350 A, 600 V AC, 300 V DC (MPN A4BY350)
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MERSEN Fuse: Class L, A4BY Series, Bolt-On Body, Time-Delay, 350 A, 600 V AC, 300 V DC (MPN A4BY350)
MERSEN Fuse: Class L, A4BY Series, Bolt-On Body, Time-Delay, 3.001 kA, 600 V AC, 300 V DC (MPN A4BY3001)
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MERSEN Fuse: Class L, A4BY Series, Bolt-On Body, Time-Delay, 3.001 kA, 600 V AC, 300 V DC (MPN A4BY3001)
MERSEN Fuse: Class L, A4BY Series, Bolt-On Body, Time-Delay, 1.4 kA, 600 V AC, 300 V DC (MPN A4BY1400)
MERSEN
MERSEN Fuse: Class L, A4BY Series, Bolt-On Body, Time-Delay, 1.4 kA, 600 V AC, 300 V DC (MPN A4BY1400)
MERSEN Fuse: Class L, A4BY Series, Bolt-On Body, Time-Delay, 2.001 kA, 600 V AC, 300 V DC (MPN A4BY2001)
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MERSEN Fuse: Class L, A4BY Series, Bolt-On Body, Time-Delay, 2.001 kA, 600 V AC, 300 V DC (MPN A4BY2001)

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