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MERSEN Fuse: Class L, A4BY Series, Bolt-On Body, Time-Delay, 700 A, 600 V AC - Time-Delay Bolt-On Fuses
MERSENTime-Delay Bolt-On Fuses

MERSEN Fuse: Class L, A4BY Series, Bolt-On Body, Time-Delay, 700 A, 600 V AC

The MERSEN A4BY Series Class L Time-Delay Bolt-On Fuse (MPN A4BY700) is a 700 A, 600 V AC, 300 V DC industrial fuse with a bolt-on body. It is designed for time-delay overcurrent protection in high-current circuits.

SKU 3G-OTH-25803

Brand
MERSEN
Item
Fuse: Class L, A4BY Series, Bolt-On Body, Time-Delay, 700 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
A4BY700
Series
A4BY
Type
A4BY Series, Bolt-On Body, Time-Delay, 700 A
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 A4BY700) is a 700 A, 600 V AC, 300 V DC industrial fuse with a bolt-on body. It is designed for time-delay overcurrent protection in high-current circuits.

Frequently Asked Questions

What is the MERSEN A4BY700 fuse used for?

The MERSEN A4BY700 is a Class L time-delay bolt-on fuse rated 700 A, 600 V AC, 300 V DC. It provides overcurrent protection in high-current industrial circuits, such as feeders, switchboards, and motor control centers, where temporary inrush currents occur.

What are the specifications of the MERSEN A4BY700 fuse?

The MERSEN A4BY700 is a 700 A, 600 V AC, 300 V DC Class L time-delay fuse with a bolt-on body. It is part of the A4BY series and carries MPN A4BY700. Its time-delay characteristic allows it to withstand temporary overloads without nuisance opening.

Where to buy MERSEN A4BY700 fuses worldwide?

3G Electric supplies MERSEN A4BY700 fuses worldwide. As a global industrial distributor, we handle full logistics, customs clearance, and delivery to your site. Contact us for availability and lead time; we source and deliver this fuse to any international destination.

How to select the correct MERSEN A4BY fuse for a circuit?

Select the MERSEN A4BY fuse based on continuous load current (700 A maximum), system voltage (600 V AC or 300 V DC), and available fault current. Ensure the bolt-on mounting matches your fuse holder. Consult a qualified engineer to verify coordination with upstream and downstream protection devices.

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, 900 A, 600 V AC, 300 V DC (MPN A4BY900)
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MERSEN Fuse: Class L, A4BY Series, Bolt-On Body, Time-Delay, 900 A, 600 V AC, 300 V DC (MPN A4BY900)
MERSEN Fuse: Class L, A4BY Series, Bolt-On Body, Time-Delay, 800 A, 600 V AC, 300 V DC (MPN A4BY800)
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MERSEN Fuse: Class L, A4BY Series, Bolt-On Body, Time-Delay, 800 A, 600 V AC, 300 V DC (MPN A4BY800)
MERSEN Fuse: Class L, A4BY Series, Bolt-On Body, Time-Delay, 601 A, 600 V AC, 300 V DC (MPN A4BY601)
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MERSEN Fuse: Class L, A4BY Series, Bolt-On Body, Time-Delay, 601 A, 600 V AC, 300 V DC (MPN A4BY601)
MERSEN Fuse: Class L, A4BY Series, Bolt-On Body, Time-Delay, 801 A, 600 V AC, 300 V DC (MPN A4BY801)
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MERSEN Fuse: Class L, A4BY Series, Bolt-On Body, Time-Delay, 801 A, 600 V AC, 300 V DC (MPN A4BY801)
MERSEN Fuse: Class L, A4BY Series, Bolt-On Body, Time-Delay, 1.1 kA, 600 V AC, 300 V DC (MPN A4BY1100)
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MERSEN Fuse: Class L, A4BY Series, Bolt-On Body, Time-Delay, 1.1 kA, 600 V AC, 300 V DC (MPN A4BY1100)
MERSEN Fuse: Class L, A4BY Series, Bolt-On Body, Time-Delay, 1 kA, 600 V AC, 300 V DC (MPN A4BY1000)
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MERSEN Fuse: Class L, A4BY Series, Bolt-On Body, Time-Delay, 1 kA, 600 V AC, 300 V DC (MPN A4BY1000)

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