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MERSEN Fuse: Class L, A4BY Series, Bolt-On Body, Time-Delay, 1.1 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, 1.1 kA, 600 V AC

The MERSEN A4BY Series Class L Time-Delay Bolt-On Fuse (MPN A4BY1100) is a bolt-on body fuse rated at 1.1 kA, 600 V AC, and 300 V DC. This time-delay fuse from MERSEN is designed for overcurrent protection in…

SKU 3G-OTH-27149

Brand
MERSEN
Item
Fuse: Class L, A4BY Series, Bolt-On Body, Time-Delay, 1.1 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
A4BY1100
Series
A4BY
Type
A4BY Series, Bolt-On Body, Time-Delay, 1.1 kA
AC
600 V
DC
300 V

Technical Documents

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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 A4BY1100) is a bolt-on body fuse rated at 1.1 kA, 600 V AC, and 300 V DC. This time-delay fuse from MERSEN is designed for overcurrent protection in industrial electrical systems.

Frequently Asked Questions

What is the MERSEN A4BY1100 fuse used for?

The MERSEN A4BY1100 is a Class L time-delay bolt-on fuse rated at 1.1 kA, 600 V AC, and 300 V DC. It provides overcurrent protection in industrial electrical systems, such as switchboards, motor control centers, and feeder circuits, where high interrupting capacity and delayed response to inrush currents are required.

What are the specifications of the MERSEN A4BY1100 fuse?

The MERSEN A4BY1100 is a Class L, A4BY Series, bolt-on body, time-delay fuse. Its key specs are 1.1 kA current rating, 600 V AC, and 300 V DC. The manufacturer part number is A4BY1100. This MERSEN fuse is designed for high-current industrial overcurrent protection applications.

Where to buy the MERSEN A4BY1100 fuse worldwide?

3G Electric supplies the MERSEN A4BY1100 fuse to customers worldwide. As a global industrial solutions provider, we handle full logistics, customs clearance, and delivery for international orders. Contact 3G Electric to source this MERSEN A4BY Series time-delay bolt-on fuse for your industrial electrical system.

How to select the correct MERSEN A4BY1100 fuse for an application?

To select the MERSEN A4BY1100, verify your system voltage does not exceed 600 V AC or 300 V DC, and the continuous load current is below 1.1 kA. Ensure the fuse holder accommodates a Class L bolt-on body. For time-delay applications, confirm the inrush characteristics match the A4BY Series curve. Consult a qualified engineer for coordination studies.

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, 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)
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)
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MERSEN Fuse: Class L, A4BY Series, Bolt-On Body, Time-Delay, 4.5 kA, 600 V AC, 300 V DC (MPN A4BY4500)
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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, 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)

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