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MERSEN FUSE 600V 3A CLASS J HS FUSE HSJ3
High-speed Class J fuse with 600 V AC and 500 V DC ratings, 300A current capacity, featuring blade terminals and clip mounting for industrial circuit protection.
£23.13
Why Choose the Mersen HSJ3 High Speed Class J Fuse?
The Mersen HSJ3 is a high performance Class J high speed semiconductor fuse engineered to provide reliable branch circuit protection alongside exceptional protection for sensitive power semiconductor devices. As part of the proven Mersen HSJ Series, it combines the low let-through energy (I²t) of a semiconductor fuse with the branch circuit performance of a UL Listed Class J fuse, making it ideal for industrial power electronics and automation equipment.
Designed for demanding industrial applications, the HSJ3 rapidly clears fault currents to minimise damage to valuable electronic components including diodes, SCRs, GTOs, IGBTs and solid state relays. Its compact ferrule construction allows straightforward installation into compatible Class J fuse holders while delivering dependable protection and high interrupting performance.
With a 3 A current rating, 600 V AC and 500 V DC ratings, the Mersen HSJ3 is ideally suited for variable frequency drives, industrial control panels, soft starters, power converters and semiconductor-based equipment requiring fast acting overcurrent protection.
Key Advantages
- High speed Class J semiconductor protection fuse.
- 3 A current rating for low current industrial circuits.
- 600 V AC and 500 V DC voltage ratings.
- Combines branch circuit protection with low I²t semiconductor protection.
- Helps protect diodes, SCRs, GTOs, IGBTs and solid state relays.
- Compact ferrule design for compatible Class J fuse holders.
Key Features
- Mersen HSJ Series high speed Class J fuse.
- 3 A rated current.
- 600 V AC / 500 V DC rated voltage.
- 50 / 60 Hz operation.
- Low let-through energy (low I²t) for semiconductor protection.
- UL Listed Class J branch circuit protection.
- High interrupting capacity for industrial electrical systems.
- Compact ferrule body for easy installation.
Reliable Protection for Sensitive Power Electronics
The Mersen HSJ3 has been developed to minimise damage caused by short circuits and overcurrent faults in semiconductor equipment. Its fast operating characteristics reduce thermal and electrical stress on expensive components, helping improve equipment reliability while reducing maintenance costs.
By combining branch circuit protection with semiconductor protection in a single device, the HSJ Series simplifies panel design and provides dependable protection for industrial automation systems, power conversion equipment and motor control applications.
Typical Applications
- Variable frequency drives.
- Industrial control panels.
- Soft starters.
- Power converters and rectifiers.
- Solid state relays.
- Semiconductor power supplies.
Technical Specifications
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| Current | 3 A | |
|---|---|---|
| Voltage | 600 V | |
| Fuse Type | UL class | |
| Item number | HSJ300 | |
| Description | Fuse HSJ - Class J - High-Speed 600VAC 500VDC 300A Blade Amp-Trap® | |
| EAN/UPC Code | 782001329686 | |
| Rated voltage AC UL | 600 V | |
| Rated voltage DC UL | 500 V | |
| Frequency (Hz) | 50/60 Hz | |
| Ampere Rating | 300 A | |
| AC or DC | AC/DC | |
| Fuse Class | Class J | |
| Speed/Characteristic | High Speed | |
| Mounting | Clip | |
| AC Max I.R./Breaking Capacity | I1: 200 kA | |
| Connection/Terminal Material | Brass | |
| Connection/Terminal Type | Blade | |
| Product Diameter | 54 mm | |
| Product Length | 181.1 mm | |
| Sell Pack Quantity | 1 EA | |
| Sell Pack Weight | 0.8528 kg | |
| Sell Pack Width | 53.8 mm | |
| Sell Pack Length | 53.8 mm | |
| Sell Pack Height | 184.1 mm | |
| Product group | Low Voltage UL/CSA Fuses | |
| Body/Insulating Material | GMG | |
| Product Weight | 0.8119 kg | |
| HS Code | 85361010 | |
| Country of Manufacture | Mexico |
Frequently Asked Questions
What is the Mersen HSJ3 used for?
The HSJ3 provides high speed overcurrent protection for semiconductor devices while meeting Class J branch circuit protection requirements.
What is the current rating of the HSJ3?
The fuse has a 3 A current rating.
What voltage is the HSJ3 rated for?
The fuse is rated for 600 V AC and 500 V DC.
Which equipment can this fuse protect?
It is commonly used to protect variable frequency drives, SCRs, IGBTs, diodes, soft starters, solid state relays and other semiconductor power devices.
Is the HSJ3 suitable for industrial automation?
Yes. It is widely used in industrial automation, motor control, power conversion and control panel applications requiring rapid semiconductor protection.
Trusted for Industrial Circuit Protection
Mersen HSJ Series fuses are trusted by engineers worldwide for delivering fast fault interruption, dependable semiconductor protection and reliable branch circuit performance across demanding industrial applications.
