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MERSEN A4BY450 Time-Delay Bolt-On Fuse, 450 A, 600 V AC, 300 V DC - Time-Delay Bolt-On Fuses
MERSENTime-Delay Bolt-On Fuses

MERSEN A4BY450 Time-Delay Bolt-On Fuse, 450 A, 600 V AC, 300 V DC

The MERSEN A4BY Series Class L Time-Delay Bolt-On Fuse (MPN A4BY450) is a 450 A, 600 V AC, 300 V DC industrial fuse with a bolt-on body. It is designed for time-delay operation, providing overcurrent protection in…

SKU 3G-OTH-27113

Brand
MERSEN
Item
A4BY450 Time-Delay Bolt-On Fuse, 450 A, 600 V AC, 300 V DC
Part Number
A4BY450
Category
Time-Delay Bolt-On Fuses
Available to Order
Also known as:A4BY450MERSEN
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Technical Specifications

MERSEN
Manufacturer Part Number
A4BY450
Series
A4BY
Type
A4BY Series, Bolt-On Body, Time-Delay, 450 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 A4BY450) is a 450 A, 600 V AC, 300 V DC industrial fuse with a bolt-on body. It is designed for time-delay operation, providing overcurrent protection in electrical circuits.

Frequently Asked Questions

What is the MERSEN A4BY450 fuse used for?

The MERSEN A4BY450 is a 450 A, 600 V AC, 300 V DC Class L time-delay bolt-on fuse used for overcurrent protection in industrial electrical circuits. It is commonly applied in motor control centers, switchboards, and feeder circuits where high interrupting capacity and delayed response to inrush currents are required.

What are the specifications of the MERSEN A4BY450 fuse?

The MERSEN A4BY450 is a Class L time-delay bolt-on fuse rated 450 A, 600 V AC, and 300 V DC. It is part of the A4BY Series with a bolt-on body design. The manufacturer part number is A4BY450. These specifications ensure reliable overcurrent protection in demanding industrial environments.

Where to buy the MERSEN A4BY450 fuse worldwide?

3G Electric supplies the MERSEN A4BY450 fuse to customers worldwide. As a global industrial solutions provider, we handle full logistics, customs clearance, and delivery to your location. Contact us for pricing and lead time on this Class L time-delay bolt-on fuse.

How to select the correct MERSEN A4BY Series fuse for an application?

To select the correct MERSEN A4BY Series fuse, match the voltage rating (600 V AC or 300 V DC) and current rating (450 A for the A4BY450) to your circuit requirements. Ensure the bolt-on body fits your fuse holder. Time-delay fuses are ideal for circuits with motor starting or transformer inrush currents.

Used in

Common applications for MERSEN
Industrial control panels — Mersen USCC1 and USCC2 UL Class CC fuse blocks for DIN rail mounting and finger-safe branch circuit protection.
Motor starters — Mersen ATQ time-delay fuses and DAR0 R-rated fuses for motor overload and short-circuit protection.
Power supplies and instrumentation — Mersen GGM and GSB fast-acting cylindrical fuses for overcurrent protection in compact electronic circuits.
DC systems — Mersen A30QS very-fast-acting square fuses rated 300 V DC for semiconductor and DC equipment protection.
Medium-voltage distribution — Mersen DAR0 R-rated fuses rated 5.08 kV AC for general-purpose overcurrent protection with visual indication.
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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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