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MERSEN Fuse: Class L, A4BY Series, Bolt-On Body, Time-Delay, 2.5 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, 2.5 kA, 600 V AC

The MERSEN A4BY Series Class L Time-Delay Bolt-On Fuse (MPN A4BY2500) is a bolt-on body fuse rated at 2.5 kA, 600 V AC, and 300 V DC. This time-delay fuse is designed for overcurrent protection in industrial…

SKU 3G-OTH-27289

Brand
MERSEN
Item
Fuse: Class L, A4BY Series, Bolt-On Body, Time-Delay, 2.5 kA, 600 V AC
Category
Time-Delay Bolt-On Fuses
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Local availability & support — the Philippines

Delivery
5–8 business days door-to-door; Bureau of Customs clearance typically 2–4 business days.
Payment
Invoicing in PHP or USD. Bank transfer and corporate PO accepted.
Ships to
Manila, Quezon City, Cebu, Davao, Batangas

Technical Specifications

MERSEN
Manufacturer Part Number
A4BY2500
Series
A4BY
Type
A4BY Series, Bolt-On Body, Time-Delay, 2.5 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 A4BY2500) is a bolt-on body fuse rated at 2.5 kA, 600 V AC, and 300 V DC. This time-delay fuse is designed for overcurrent protection in industrial electrical systems.

Supplied to the Philippines — compatible with 60 Hz installations. DHL Express delivery to Manila, Quezon City, Cebu, customs and duties handled door-to-door.

Frequently Asked Questions

What is the MERSEN A4BY2500 fuse used for?

The MERSEN A4BY2500 is a Class L time-delay bolt-on fuse used for overcurrent protection in industrial electrical systems. It handles high fault currents up to 2.5 kA and is suitable for AC circuits up to 600 V and DC circuits up to 300 V, protecting equipment like switchgear and motor control centers.

What are the specifications of the MERSEN A4BY2500 fuse?

The MERSEN A4BY2500 is a Class L, A4BY Series time-delay bolt-on fuse rated at 2.5 kA, 600 V AC, and 300 V DC. It features a bolt-on body design for secure mounting. The manufacturer part number is A4BY2500, and it is part of the MERSEN A4BY series for industrial overcurrent protection.

Where to buy the MERSEN A4BY2500 fuse worldwide?

You can source the MERSEN A4BY2500 fuse through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to worldwide destinations. Contact us for availability and lead time; we supply genuine MERSEN A4BY series fuses for industrial applications.

How to select the correct MERSEN A4BY2500 fuse for an application?

To select the MERSEN A4BY2500, verify your system voltage (600 V AC or 300 V DC max) and ensure the fault current rating (2.5 kA) matches your overcurrent protection needs. The time-delay characteristic handles inrush currents from motors or transformers. Always consult the MERSEN A4BY series datasheet for coordination and mounting details.

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)
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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, 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)
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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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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, 250 A, 600 V AC, 300 V DC (MPN A4BY250)
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MERSEN Fuse: Class L, A4BY Series, Bolt-On Body, Time-Delay, 250 A, 600 V AC, 300 V DC (MPN A4BY250)
MERSEN Fuse: Class L, A4BY Series, Bolt-On Body, Time-Delay, 1.35 kA, 600 V AC, 300 V DC (MPN A4BY1350)
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MERSEN Fuse: Class L, A4BY Series, Bolt-On Body, Time-Delay, 1.35 kA, 600 V AC, 300 V DC (MPN A4BY1350)

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