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MERSEN FUSE FUSE, CLASS J T/D (AJT15) AJT15
The AJT15 fuse provides superior circuit protection with its time-delay characteristics, supporting reliable performance under demanding start-up conditions in industrial environments. Featuring SmartSpot® visual indication and robust Amp-Trap 2000® construction.
£14.22
Why Choose the Mersen AJT15 Class J Time-Delay Fuse?
The Mersen AJT15 is a premium Class J time-delay fuse designed to provide reliable overcurrent protection for industrial and commercial electrical systems. As part of the trusted Amp-Trap 2000® AJT series, it delivers exceptional current-limiting performance while accommodating temporary motor starting and transformer inrush currents without unnecessary fuse operation.
Engineered for demanding industrial applications, the AJT15 protects branch circuits, motors, transformers and electrical distribution equipment against overloads and short circuits. Its compact Class J design occupies significantly less panel space than many conventional fuse types while maintaining a high interrupting capacity for dependable fault protection.
Rated at 15 A with a 600 V AC / 400 V DC voltage rating, the AJT15 is ideally suited to industrial control panels, motor circuits, HVAC systems, transformers and OEM machinery. The ferrule-style construction enables simple installation in compatible Class J fuse holders.
Key Advantages
- Compact Class J time-delay fuse for industrial circuit protection.
- 15 A current rating for branch circuits and motor applications.
- 600 V AC / 400 V DC voltage rating.
- Time-delay characteristics reduce nuisance operation caused by motor and transformer inrush currents.
- Excellent current-limiting performance helps minimise equipment damage during fault conditions.
- Compact Class J construction maximises available control panel space.
Key Features
- Mersen Amp-Trap 2000® AJT series.
- 15 A current rating.
- 600 V AC / 400 V DC rated voltage.
- Class J time-delay fuse.
- Ferrule mounting configuration.
- Current-limiting design for enhanced equipment protection.
- Suitable for motors, transformers, feeders and branch circuits.
- Designed for industrial and commercial electrical installations.
Reliable Protection for Industrial Electrical Systems
The Mersen AJT series is specifically engineered to withstand the temporary inrush currents associated with motors, transformers and other inductive loads while responding rapidly to sustained overloads and short circuits. This helps maximise equipment uptime while ensuring dependable circuit protection.
Its advanced current-limiting technology reduces thermal and mechanical stress on downstream equipment during fault conditions, helping improve electrical safety, minimise damage and reduce maintenance costs in industrial environments.
Typical Applications
- Industrial control panels.
- Motor branch circuits.
- Transformer protection.
- HVAC and refrigeration systems.
- OEM machinery and automation equipment.
- Power distribution panels and switchboards.
Technical Specifications
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| Fuse Indication | Visual indicator | |
|---|---|---|
| Fuse Type | UL class | |
| Fuse Class | Time delay | |
| Voltage | 600 V | |
| Item number | AJT15 | |
| Description | Fuse AJT - Class J - Time-delay 600VAC 400VDC 15A Ferrule SmartSpot® Amp-Trap 2000® | |
| EAN/UPC Code | 782001962470 | |
| Rated voltage AC UL | 600 V | |
| Rated voltage DC UL | 400 V | |
| Frequency (Hz) | 50/60 Hz | |
| Ampere Rating | 15 A | |
| AC or DC | AC/DC | |
| Fuse Class | Class J | |
| Speed/Characteristic | Time Delay | |
| Mounting | Clip | |
| AC Max I.R./Breaking Capacity | I1: 200 kA | |
| Indication System | Yes | |
| Indication System Type | SmartSpot® | |
| Connection/Terminal Material | Tin-Plated Copper | |
| Connection/Terminal Type | Ferrule | |
| Product Diameter | 20.7 mm | |
| Product Length | 57.2 mm | |
| Sell Pack Quantity | 10 EA | |
| Sell Pack Weight | 0.4627 kg | |
| Sell Pack Width | 60.5 mm | |
| Sell Pack Length | 111.3 mm | |
| Sell Pack Height | 42.9 mm | |
| Product group | Low Voltage UL/CSA Fuses | |
| Body/Insulating Material | GMG | |
| Product Weight | 0.044 kg | |
| HS Code | 85361050 | |
| Country of Manufacture | Mexico |
Frequently Asked Questions
What is the Mersen AJT15 used for?
The AJT15 protects industrial branch circuits, motors, transformers and electrical distribution equipment against overloads and short circuits.
What is the current rating of the AJT15?
The Mersen AJT15 has a rated current of 15 A.
What voltage is the AJT15 rated for?
The fuse is rated for applications up to 600 V AC and 400 V DC.
Why is the AJT15 a time-delay fuse?
Its time-delay characteristic allows temporary motor and transformer inrush currents without nuisance operation while maintaining reliable protection against sustained overloads.
Where is the AJT15 typically installed?
It is commonly installed in industrial control panels, motor control centres, machinery and electrical distribution systems using compatible Class J fuse holders.
Trusted by Electrical Professionals Worldwide
Mersen Amp-Trap 2000® Class J fuses are trusted by electrical engineers, OEM manufacturers and maintenance professionals for dependable overcurrent protection, high current limitation and reliable long-term performance.
