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MERSEN FUSE 600V 30A CLASS J HS FUSE HSJ30
The Fuse HSJ offers reliable, high-speed protection for sensitive power circuits, with a robust Class J design rated at 600VAC and 500VDC, supporting up to 300A. Its advanced Amp-Trap® technology ensures rapid response to overcurrents, safeguarding critical equipment and minimising downtime.
£17.75
Why Choose the Mersen HSJ30 High Speed Class J Fuse?
The Mersen HSJ30 is a compact and dependable Class J high speed semiconductor fuse designed to provide branch circuit protection together with low let-through energy for sensitive power electronics. As part of the established Mersen Amp-Trap HSJ Series, it combines the performance of a semiconductor fuse with the requirements of a UL Listed Class J fuse in a single protective device.
The HSJ30 is engineered to interrupt damaging fault currents rapidly, helping protect diodes, SCRs, GTOs, solid state relays and other power semiconductor components. Its fast operating characteristic reduces the thermal and electrical energy passed through to protected equipment, helping minimise component damage and costly industrial downtime.
With a rated current of 30 A, an AC voltage rating of 600 V and a DC voltage rating of 500 V, the Mersen HSJ30 is suitable for industrial control panels, variable frequency drives, power converters and semiconductor-based equipment. Its ferrule terminals and clip mounting arrangement enable straightforward installation in compatible Class J fuse holders.
Key Advantages
- High speed Class J fuse for branch circuit and semiconductor protection.
- 30 A current rating for industrial power and control equipment.
- 600 V AC and 500 V DC ratings for flexible circuit protection.
- Low let-through energy helps protect sensitive semiconductor components.
- High 200 kA AC interrupting capacity for demanding fault conditions.
- Compact ferrule construction for compatible clip-mounted fuse holders.
Key Features
- Mersen Amp-Trap HSJ high speed fuse series.
- 30 A rated current.
- 600 V AC / 500 V DC rated voltage.
- 200 kA AC maximum interrupting rating.
- 50 / 60 Hz operating frequency.
- Class J high speed operating characteristic.
- Tin-plated copper ferrule terminals.
- RoHS-compliant construction.
Reliable Protection for Power Electronics
High speed fuses such as the Mersen HSJ30 are designed to clear short circuits before excessive thermal energy can damage sensitive semiconductor devices. The fuse’s low I²t performance limits the amount of fault energy reaching protected components, improving system reliability and helping reduce repair costs.
By combining Class J branch circuit protection with high speed semiconductor protection, the HSJ30 can simplify industrial panel design. It is particularly useful in applications where conventional branch circuit fuses may not operate quickly enough to protect delicate electronic switching components.
Typical Applications
- Variable frequency drives and motor controllers.
- Industrial control panels and automation systems.
- Power converters, inverters and rectifiers.
- Soft starters and solid state relays.
- SCR, GTO and diode protection circuits.
- Industrial power supplies and electronic equipment.
Technical Specifications
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| Current | 30 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 | 85361050 | |
| Country of Manufacture | Mexico |
Frequently Asked Questions
What is the Mersen HSJ30 used for?
The HSJ30 is used to provide high speed overcurrent protection for power semiconductor devices while also delivering Class J branch circuit protection.
What is the current rating of the HSJ30?
The Mersen HSJ30 has a rated current of 30 A.
What voltage ratings does the HSJ30 support?
The fuse is rated for circuits operating at up to 600 V AC or 500 V DC.
What is the interrupting capacity of the HSJ30?
The HSJ30 has a maximum AC interrupting capacity of 200 kA, making it suitable for industrial systems with high available fault currents.
How is the Mersen HSJ30 installed?
The fuse uses ferrule terminals and is installed using compatible clip-mounted Class J fuse holders or approved electrical equipment.
Trusted for Industrial Circuit Protection
Mersen Amp-Trap HSJ fuses are widely selected by panel builders, automation engineers and equipment manufacturers requiring dependable branch circuit protection and fast fault clearing for sensitive industrial power electronics.
