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MERSEN FUSE 600V 50A CLASS J HS FUSE HSJ50
The HSJ50 offers fast-acting protection for sensitive power electronics and circuits, with a robust Class J design supporting up to 600VAC and 500VDC at a continuous 500A rating. Its high breaking capacity ensures reliable interruption of high fault currents, minimising equipment damage and system downtime.
£39.73
Why Choose the Mersen HSJ50 High Speed Class J Fuse?
The Mersen HSJ50 is a premium Class J high speed semiconductor fuse designed to deliver both branch circuit protection and rapid protection for sensitive power semiconductor devices. As part of the trusted Mersen Amp-Trap® HSJ Series, it combines the low let-through energy (I²t) of a semiconductor fuse with the performance of a UL Listed Class J fuse, making it an ideal choice for industrial automation, motor control and power conversion equipment.
Engineered for demanding industrial environments, the HSJ50 rapidly clears fault currents to minimise damage to valuable components including diodes, SCRs, GTOs, IGBTs and solid state relays. Its compact ferrule construction enables straightforward installation into compatible Class J fuse holders while providing dependable protection and high interrupting capacity.
With a rated current of 50 A, 600 V AC and 500 V DC ratings, the Mersen HSJ50 is ideally suited for variable frequency drives, soft starters, industrial control panels and power conversion equipment requiring fast acting overcurrent protection.
Key Advantages
- High speed Class J semiconductor protection fuse.
- 50 A current rating for industrial power applications.
- 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 installation in Class J fuse holders.
Key Features
- Mersen Amp-Trap® HSJ Series.
- 50 A rated current.
- 600 V AC / 500 V DC rated voltage.
- 50 / 60 Hz operation.
- Low I²t design for semiconductor protection.
- UL Listed Class J branch circuit protection.
- 200 kA AC / 100 kA DC interrupting rating.
- Ferrule terminal construction for clip-mounted fuse holders.
Reliable Protection for Industrial Power Electronics
The Mersen HSJ50 is specifically designed to minimise the effects of short circuits and severe overcurrent events in semiconductor-based equipment. Its fast acting characteristic helps reduce thermal and electrical stress on expensive electronic components, improving equipment reliability while reducing maintenance costs and downtime.
By combining branch circuit compliance with semiconductor protection, the HSJ50 simplifies electrical panel design while providing dependable protection for modern industrial automation, motor control and power conversion systems.
Typical Applications
- Variable frequency drives (VFDs).
- Soft starters.
- Industrial motor controllers.
- Power converters and rectifiers.
- Solid state relays.
- Industrial automation and control panels.
Technical Specifications
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| Current | 50 A | |
|---|---|---|
| Voltage | 600 V | |
| Fuse Type | UL class | |
| Item number | HSJ500 | |
| Description | Fuse HSJ - Class J - High-Speed 600VAC 500VDC 500A Blade Amp-Trap® | |
| EAN/UPC Code | 782001329747 | |
| Rated voltage AC UL | 600 V | |
| Rated voltage DC UL | 500 V | |
| Frequency (Hz) | 50/60 Hz | |
| Ampere Rating | 500 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 | Silver-Plated Copper | |
| Connection/Terminal Type | Blade | |
| Product Diameter | 63.5 mm | |
| Product Length | 203.2 mm | |
| Sell Pack Quantity | 1 EA | |
| Sell Pack Weight | 1.4379 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 | 1.3698 kg | |
| HS Code | 85361050 | |
| Country of Manufacture | Mexico |
Frequently Asked Questions
What is the Mersen HSJ50 used for?
The HSJ50 provides high speed overcurrent protection for semiconductor devices while also meeting Class J branch circuit protection requirements.
What is the current rating of the HSJ50?
The fuse has a 50 A current rating.
What voltage is the HSJ50 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 HSJ50 suitable for industrial automation?
Yes. It is widely used in industrial automation, motor control, power conversion and machine building applications requiring rapid semiconductor protection.
Trusted for Industrial Circuit Protection
Mersen Amp-Trap® HSJ Series fuses are trusted worldwide for delivering fast fault interruption, dependable semiconductor protection and reliable branch circuit performance in demanding industrial electrical systems.
