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MERSEN Fuse: Class L, A4BY Series, Bolt-On Body, Time-Delay, 3 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, 3 kA, 600 V AC

The MERSEN A4BY Series Class L Time-Delay Bolt-On Fuse (MPN A4BY3000) is a 3 kA, 600 V AC, 300 V DC industrial fuse. It features a bolt-on body and time-delay operation.

SKU 3G-OTH-27295

Brand
MERSEN
Item
Fuse: Class L, A4BY Series, Bolt-On Body, Time-Delay, 3 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
A4BY3000
Series
A4BY
Type
A4BY Series, Bolt-On Body, Time-Delay, 3 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 A4BY3000) is a 3 kA, 600 V AC, 300 V DC industrial fuse. It features a bolt-on body and time-delay operation.

Frequently Asked Questions

What is the MERSEN A4BY3000 fuse used for?

The MERSEN A4BY3000 is a Class L time-delay bolt-on fuse rated 3 kA, 600 V AC, 300 V DC. It protects industrial power circuits, motor feeders, and transformers against overcurrents while tolerating harmless inrush surges. 3G Electric supplies this fuse globally.

What are the specifications of the MERSEN A4BY3000 fuse?

The MERSEN A4BY3000 is a Class L, A4BY Series, bolt-on body, time-delay fuse rated 3 kA, 600 V AC, 300 V DC. It is designed for high-current industrial protection. 3G Electric sources and delivers this MERSEN fuse worldwide.

Where to buy the MERSEN A4BY3000 fuse worldwide?

3G Electric supplies the MERSEN A4BY3000 Class L time-delay bolt-on fuse to customers worldwide. We handle full logistics, customs clearance, and delivery to your site. Contact us for pricing and lead time on this 3 kA, 600 V AC, 300 V DC fuse.

How to select the correct MERSEN A4BY3000 fuse for an application?

Select the MERSEN A4BY3000 for circuits requiring a 3 kA interrupting rating at 600 V AC or 300 V DC with time-delay characteristics. Ensure the bolt-on mounting matches your panel. 3G Electric can help verify fitment and supply the correct A4BY Series fuse.

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, 3.001 kA, 600 V AC, 300 V DC (MPN A4BY3001)
MERSEN
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, 2.5 kA, 600 V AC, 300 V DC (MPN A4BY2500)
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MERSEN Fuse: Class L, A4BY Series, Bolt-On Body, Time-Delay, 2.5 kA, 600 V AC, 300 V DC (MPN A4BY2500)
MERSEN Fuse: Class L, A4BY Series, Bolt-On Body, Time-Delay, 3.5 kA, 600 V AC, 300 V DC (MPN A4BY3500)
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MERSEN Fuse: Class L, A4BY Series, Bolt-On Body, Time-Delay, 3.5 kA, 600 V AC, 300 V DC (MPN A4BY3500)
MERSEN Fuse: Class L, A4BY Series, Bolt-On Body, Time-Delay, 2.001 kA, 600 V AC, 300 V DC (MPN A4BY2001)
MERSEN
MERSEN Fuse: Class L, A4BY Series, Bolt-On Body, Time-Delay, 2.001 kA, 600 V AC, 300 V DC (MPN A4BY2001)
MERSEN Fuse: Class L, A4BY Series, Bolt-On Body, Time-Delay, 300 A, 600 V AC, 300 V DC (MPN A4BY300)
MERSEN
MERSEN Fuse: Class L, A4BY Series, Bolt-On Body, Time-Delay, 300 A, 600 V AC, 300 V DC (MPN A4BY300)
MERSEN Fuse: Class L, A4BY Series, Bolt-On Body, Time-Delay, 2.2 kA, 600 V AC, 300 V DC (MPN A4BY2200)
MERSEN
MERSEN Fuse: Class L, A4BY Series, Bolt-On Body, Time-Delay, 2.2 kA, 600 V AC, 300 V DC (MPN A4BY2200)

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MERSEN Fuse: Class L, A4BY Series, Bolt-On Body, Time-Delay, 1.6 kA, 600 V AC, 300 V DC (MPN A4BY1600)
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