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MERSEN FUSE L TD FUSE 600V 2000A A4BQ A4BQ2000
Heavy-duty Class L time-delay fuse with 2000A rating, dual voltage capability (600VAC/500VDC), and blade terminals for secure connections.
£1,286.00
Why Choose the Mersen A4BQ2000 Class L Fuse?
The Mersen A4BQ2000 is a high-capacity Class L time-delay current-limiting fuse designed to protect industrial power distribution systems, service entrance equipment and heavy-duty electrical installations against damaging overloads and short circuits. Part of the established Mersen Amp-Trap 2000 A4BQ series, it combines dependable time-delay performance with advanced current limitation for demanding high-power applications.
Rated at 2000 A, 600 V AC and 500 V DC, the A4BQ2000 is engineered for electrical systems carrying substantial load currents and exposed to high prospective fault levels. Its current-limiting construction reduces peak let-through current and fault energy, helping protect switchgear, busbars, transformers, conductors and connected equipment from severe thermal and mechanical stress.
The fuse features a controlled four-second time delay at 500% of rated current, allowing temporary motor-starting currents, transformer energisation and other normal equipment inrush conditions to pass without nuisance operation. Its rejection-style Class L construction supports correct fuse selection and secure installation in compatible industrial fuse equipment.
Key Advantages
- Heavy-duty Class L time-delay current-limiting fuse.
- 2000 A current rating for high-capacity power systems.
- 600 V AC and 500 V DC voltage ratings.
- High interrupting capacity for demanding fault-current environments.
- Four-second time delay accommodates temporary equipment inrush currents.
- Current-limiting performance reduces damaging thermal and mechanical energy.
Key Features
- Mersen Amp-Trap 2000 A4BQ series.
- 2000 A rated current.
- 600 V AC maximum voltage rating.
- 500 V DC maximum voltage rating.
- Class L rejection-style fuse construction.
- Four-second time delay at 500% rated current.
- Current-limiting design for enhanced equipment protection.
- Bolted-blade terminals for secure industrial installation.
Reliable Protection for High-Power Distribution Systems
The Mersen A4BQ2000 interrupts excessive fault currents before they can reach their maximum prospective value. By limiting peak current and let-through energy, the fuse helps reduce damage to switchboards, cables, busbars, transformers and other critical electrical distribution components.
Its time-delay characteristic allows normal temporary surges associated with motors, transformers and inductive equipment to pass without unnecessary operation. This makes the A4BQ2000 suitable for installations where dependable protection, selective coordination and operational continuity are essential.
Typical Applications
- Industrial switchboards and distribution panels.
- Service entrance equipment.
- Main distribution and feeder circuits.
- Motor control centres.
- Transformer primary and secondary protection.
- Industrial disconnect switches.
- Heavy manufacturing and process equipment.
- Compatible high-current AC and DC systems.
Technical Specifications
Tick the specs you need, then view products that match.
| Current | 2000 A | |
|---|---|---|
| Voltage | 600 V | |
| Fuse Type | UL class | |
| Fuse Class | Time delay | |
| Item number | A4BQ2000 | |
| Description | Fuse A4BQ - Class L - Time-Delay 600VAC 500VDC 2000A Blade Amp-Trap 2000® | |
| EAN/UPC Code | 782001939410 | |
| Rated voltage AC UL | 600 V | |
| Rated voltage DC UL | 500 V | |
| Frequency (Hz) | 50/60 Hz | |
| Ampere Rating | 2000 A | |
| AC or DC | AC/DC | |
| Fuse Class | Class L | |
| Speed/Characteristic | Time Delay | |
| Mounting | Bolted | |
| AC Max I.R./Breaking Capacity | I1: 200 kA | |
| Connection/Terminal Material | Silver-Plated Copper | |
| Connection/Terminal Type | Blade | |
| Product Diameter | 88.9 mm | |
| Product Length | 273 mm | |
| Sell Pack Quantity | 1 EA | |
| Sell Pack Weight | 3.9735 kg | |
| Sell Pack Width | 95.2 mm | |
| Sell Pack Length | 304.8 mm | |
| Sell Pack Height | 96.8 mm | |
| Product group | Low Voltage UL/CSA Fuses | |
| Body/Insulating Material | GMG | |
| Product Weight | 3.783 kg | |
| HS Code | 85361090 | |
| Country of Manufacture | Mexico |
Frequently Asked Questions
What is the Mersen A4BQ2000 used for?
The Mersen A4BQ2000 protects high-current industrial power distribution systems, service entrance equipment, transformers, feeders and motor circuits against overloads and short circuits.
What is the current rating of the A4BQ2000?
The fuse has a rated current of 2000 A.
What voltage is the A4BQ2000 rated for?
The A4BQ2000 is rated for electrical systems operating at up to 600 V AC or 500 V DC.
What is the interrupting rating of the A4BQ2000?
The fuse has an AC interrupting rating of 200 kA RMS symmetrical and a DC interrupting rating of 100 kA.
Why does the A4BQ2000 include a time delay?
Its four-second time delay at 500% of rated current allows temporary motor, transformer and equipment inrush currents to pass without nuisance fuse operation.
How should the A4BQ2000 be installed?
The fuse must be installed in compatible Class L equipment with suitable current, voltage and interrupting ratings. Installation and replacement should be completed by a qualified electrical professional.
Trusted Industrial Circuit Protection
Mersen Amp-Trap 2000 Class L fuses are specified by electrical engineers, panel builders and industrial facilities for dependable protection of high-capacity electrical distribution systems.
