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MERSEN FUSE 600V 4A J TD NON-IND AJT4N
The AJT4N fuse provides reliable time-delay circuit protection for industrial equipment, rated for 600VAC and 500VDC at 4 amps with a robust ferrule terminal and high interrupting capacity.
£14.96
Why Choose the Mersen AJT4N Class J Time-Delay Fuse?
The Mersen AJT4N is a premium Class J time-delay fuse designed to deliver dependable overcurrent protection for industrial electrical systems. As part of the trusted Mersen Amp-Trap 2000® AJT series, it combines advanced current-limiting performance with time-delay characteristics, making it ideal for protecting motors, transformers, feeders and branch circuits where temporary inrush currents occur during normal operation.
Engineered using advanced fuse technology, the AJT4N tolerates temporary motor-starting and transformer-energisation currents while rapidly clearing sustained overloads and short circuits. Its compact Class J design requires approximately half the mounting space of comparable Class RK fuses, helping reduce enclosure size while maintaining outstanding circuit protection.
With a 4 A current rating and a 600 V AC / 500 V DC rating, the AJT4N is ideally suited to industrial control panels, OEM machinery, motor branch circuits and transformer protection. Its ferrule construction allows secure installation into compatible Class J fuse holders and disconnect switches.
Key Advantages
- Compact Class J time-delay fuse for industrial circuit protection.
- 4 A current rating for precision electrical protection.
- 600 V AC / 500 V DC voltage rating.
- Time-delay characteristics minimise nuisance operation caused by motor and transformer inrush currents.
- Excellent current-limiting performance helps protect valuable electrical equipment.
- Compact footprint reduces panel space requirements.
Key Features
- Mersen Amp-Trap 2000® AJT series.
- 4 A ampere rating.
- 600 V AC / 500 V DC rated voltage.
- Class J time-delay fuse construction.
- Ferrule terminal design.
- 200 kA AC interrupting rating.
- Non-indicating fuse configuration.
- Supports IEC Type 2 No Damage protection.
Reliable Protection for Industrial Electrical Systems
The Mersen AJT4N delivers reliable protection against overloads and short circuits while allowing temporary inrush currents generated by motors and transformers to pass without unnecessary fuse operation. Its advanced current-limiting technology helps reduce thermal and mechanical stress on connected equipment, improving reliability and minimising maintenance costs.
Its compact Class J construction makes it an excellent choice for industrial control panels, automation systems, OEM machinery and electrical distribution equipment where dependable overcurrent protection and efficient use of installation space are essential.
Typical Applications
- Industrial control panels.
- Motor branch circuit protection.
- Transformer protection.
- OEM machinery and automation systems.
- Main, feeder and branch circuits.
- Industrial power distribution equipment.
Technical Specifications
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| Current | 4 A | |
|---|---|---|
| Voltage | 600 V | |
| Fuse Type | UL class | |
| Fuse Class | Time delay | |
| Item number | AJT4N | |
| Description | Fuse AJT - Class J - Time-delay 600VAC 500VDC 4A Ferrule Amp-Trap 2000® | |
| EAN/UPC Code | 782001498085 | |
| Rated voltage AC UL | 600 V | |
| Rated voltage DC UL | 500 V | |
| Frequency (Hz) | 50/60 Hz | |
| Ampere Rating | 4 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 | |
| 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 | 85361010 | |
| Country of Manufacture | Mexico |
Frequently Asked Questions
What is the Mersen AJT4N used for?
The AJT4N protects industrial motors, transformers, feeders and branch circuits against overloads and short-circuit faults.
What is the current rating of the AJT4N?
The fuse has a rated current of 4 A.
What voltage is the AJT4N rated for?
The AJT4N operates at up to 600 V AC and 500 V DC.
Why use a time-delay fuse?
Time-delay fuses withstand temporary motor-starting and transformer-energisation currents while providing fast protection against sustained overloads and fault currents.
Where is the AJT4N typically installed?
It is commonly installed in industrial control panels, machinery, fused disconnect switches and power distribution equipment using compatible Class J fuse holders.
Trusted for Industrial Circuit Protection
Mersen Amp-Trap 2000® AJT Class J fuses are trusted worldwide by electrical engineers, OEM manufacturers and panel builders for dependable time-delay protection, outstanding current limitation and long-term industrial reliability.
