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MERSEN FUSE L TD FUSE 600V 601A A4BQ A4BQ601
The Fuse A4BQ601 offers robust time-delay performance for high-capacity circuits, ensuring superior protection against overloads and short circuits at up to 600VAC and 500VDC. Its Class L, blade-style construction supports secure, efficient installation in demanding industrial environments.
£738.01
Why Choose the Mersen A4BQ601 Class L Time-Delay Fuse?
The Mersen A4BQ601 is a high-performance Class L time-delay fuse designed to provide reliable overcurrent and short-circuit protection for industrial and commercial electrical distribution systems. As part of the established Mersen Amp-Trap 2000® A4BQ series, it is engineered for service entrance equipment, switchgear, feeder circuits and other high-capacity applications where dependable circuit protection is essential.
The A4BQ601 combines advanced current-limiting performance with a time-delay operating characteristic. This design helps reduce damaging fault energy reaching downstream conductors and equipment while allowing temporary inrush currents from motors, transformers and other inductive loads to pass without unnecessary fuse operation.
With a rated current of 601 A and voltage ratings of up to 600 V AC and 500 V DC, the A4BQ601 is suitable for demanding power distribution installations. Its Class L construction and robust blade terminals provide secure integration with compatible fuse holders, switchboards and electrical protection equipment.
Key Advantages
- Dependable Class L time-delay fuse for industrial power protection.
- 601 A current rating for high-capacity electrical circuits.
- 600 V AC and 500 V DC voltage ratings.
- Advanced Amp-Trap 2000® current-limiting technology.
- Time-delay characteristic accommodates temporary equipment inrush currents.
- High interrupting capacity supports effective protection during severe faults.
Key Features
- Mersen Amp-Trap 2000® A4BQ series.
- 601 A rated current.
- 600 V AC rated voltage.
- 500 V DC rated voltage.
- Class L time-delay fuse.
- Current-limiting construction reduces short-circuit let-through energy.
- 4-second minimum time delay at 500% of rated current.
- Blade terminals for secure electrical installation.
- Suitable for 50 / 60 Hz power systems.
Reliable Protection for Industrial Power Distribution
The Mersen A4BQ601 helps protect switchgear, conductors and connected electrical equipment by limiting the current and energy passing through a circuit during a short-circuit event. This reduces thermal and mechanical stress on downstream components, supporting improved system safety, reliability and equipment longevity.
Its time-delay characteristic makes the fuse particularly suitable for circuits containing motors, transformers and other equipment that generates temporary start-up currents. The A4BQ601 tolerates normal inrush conditions while responding effectively to sustained overloads and dangerous short-circuit faults.
Typical Applications
- Service entrance equipment.
- Industrial switchgear and switchboards.
- Main electrical distribution systems.
- High-capacity feeder circuits.
- Motor control centres.
- Transformer protection systems.
- Manufacturing and processing facilities.
Technical Specifications
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| Current | 601 A | |
|---|---|---|
| Voltage | 600 V | |
| Fuse Type | UL class | |
| Fuse Class | Time delay | |
| Item number | A4BQ601 | |
| Description | Fuse A4BQ - Class L - Time-Delay 600VAC 500VDC 601A Blade Amp-Trap 2000® | |
| EAN/UPC Code | 782001939427 | |
| Rated voltage AC UL | 600 V | |
| Rated voltage DC UL | 500 V | |
| Frequency (Hz) | 50/60 Hz | |
| Ampere Rating | 601 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 | 50.8 mm | |
| Product Length | 219.2 mm | |
| Sell Pack Quantity | 1 EA | |
| Sell Pack Weight | 1.7962 kg | |
| Sell Pack Width | 63.5 mm | |
| Sell Pack Length | 222.2 mm | |
| Sell Pack Height | 60.5 mm | |
| Product group | Low Voltage UL/CSA Fuses | |
| Body/Insulating Material | GMG | |
| Product Weight | 1.71 kg | |
| HS Code | 85361090 | |
| Country of Manufacture | Mexico |
Frequently Asked Questions
What is the Mersen A4BQ601 used for?
The A4BQ601 provides overcurrent and short-circuit protection for service entrance equipment, switchgear, feeder circuits and industrial power distribution systems.
What is the current rating of the A4BQ601?
The fuse has a rated current of 601 A.
What voltage ratings does the A4BQ601 support?
The Mersen A4BQ601 is rated for up to 600 V AC and 500 V DC.
Why does the A4BQ601 have a time-delay characteristic?
The time delay allows temporary motor, transformer and equipment inrush currents to pass without nuisance fuse operation while maintaining dependable fault protection.
What type of fuse is the Mersen A4BQ601?
It is a Class L current-limiting time-delay fuse from the Mersen Amp-Trap 2000® A4BQ series.
Trusted for Industrial Circuit Protection
Mersen Amp-Trap 2000® Class L fuses are widely used by electrical engineers, contractors and industrial facilities to deliver dependable current limitation and reliable protection for critical power distribution systems.
