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MERSEN FUSE 600V 45A CLASS J HS FUSE HSJ45
High-speed Class J fuse rated for 600VAC and 500VDC with a 450A current rating, featuring silver-plated copper blades and GMG insulating body for reliable industrial protection.
£39.73
Why Choose the Mersen HSJ45 High Speed Class J Fuse?
The Mersen HSJ45 is a premium Class J high speed semiconductor fuse engineered to provide reliable branch circuit protection alongside superior protection for sensitive 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 branch circuit performance of a UL Listed Class J fuse, making it ideal for industrial automation and power electronics.
Designed for demanding industrial applications, the HSJ45 rapidly interrupts fault currents to minimise damage to valuable semiconductor components including diodes, SCRs, GTOs, IGBTs and solid state relays. Its compact ferrule design allows easy installation into compatible Class J fuse holders while delivering dependable protection and high interrupting performance.
With a 45 A current rating, 600 V AC and 500 V DC ratings, the Mersen HSJ45 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.
- 45 A current rating for industrial control 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.
- 45 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 HSJ45 is 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.
By combining branch circuit compliance with semiconductor protection, the HSJ45 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 | 45 A | |
|---|---|---|
| Voltage | 600 V | |
| Fuse Type | UL class | |
| Item number | HSJ450 | |
| Description | Fuse HSJ - Class J - High-Speed 600VAC 500VDC 450A Blade Amp-Trap® | |
| EAN/UPC Code | 782001329730 | |
| Rated voltage AC UL | 600 V | |
| Rated voltage DC UL | 500 V | |
| Frequency (Hz) | 50/60 Hz | |
| Ampere Rating | 450 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 HSJ45 used for?
The HSJ45 provides high speed overcurrent protection for semiconductor devices while also meeting Class J branch circuit protection requirements.
What is the current rating of the HSJ45?
The fuse has a 45 A current rating.
What voltage is the HSJ45 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 HSJ45 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.
