Standard delivery
£8 ex VAT · free over £200UK parcel delivery is £8 ex VAT, or free on orders over £200 ex VAT.
Heavier items may be charged at a weight-based or pallet rate, shown at checkout.
MERSEN FUSE 5,5 URD 33 TT F 2000 5,5URD33TTF2000
High-speed aR characteristic fuse for semiconductor protection with 2000A rating, flush ends with metric threads, and integrated striker indication system.
£251.77
Why Choose the Mersen B300588 High-Speed Semiconductor Fuse?
The Mersen B300588 is a high-performance square body semiconductor protection fuse designed for rapid interruption of short-circuit currents in industrial power electronic equipment. As part of the established Mersen Protistor® high-speed fuse range, it provides dependable protection for sensitive semiconductor components such as IGBTs, thyristors, power diodes and rectifiers.
The B300588 features an ultra-fast operating characteristic that helps limit the thermal and electrical energy reaching valuable electronic components during a fault. This can reduce equipment damage, shorten maintenance periods and improve the overall reliability of demanding power conversion and industrial automation systems.
With a rated current of 400 A and voltage ratings of up to 1250 V AC under IEC standards and 1300 V AC under UL standards, the Mersen B300588 is suitable for high-power drives, converters, inverters, uninterruptible power supplies and renewable energy installations.
Key Advantages
- High-speed aR semiconductor protection fuse for industrial power electronics.
- 400 A rated current for demanding high-power applications.
- 1250 V AC IEC and 1300 V AC UL voltage ratings.
- Rapid fault interruption helps minimise damaging energy let-through.
- Suitable for protecting IGBTs, thyristors, diodes and rectifier assemblies.
- Robust square body construction for dependable industrial performance.
Key Features
- Mersen Protistor® high-speed fuse technology.
- 400 A rated current.
- 1250 V AC IEC rating.
- 1300 V AC UL rating.
- aR ultra-fast operating characteristic.
- Square body industrial fuse construction.
- Designed for low fault-energy let-through.
- Suitable for semiconductor-based power conversion equipment.
Reliable Protection for Power Electronics
Power semiconductor devices can be damaged by excessive fault energy before a conventional industrial fuse has time to operate. The Mersen B300588 is engineered to react rapidly during short-circuit conditions, helping restrict peak current and total energy let-through before sensitive components are permanently damaged.
Its high-speed aR characteristic makes it particularly suitable for circuits where semiconductor protection is the primary requirement. Correct replacement selection should always include confirmation of the current rating, voltage rating, fuse class, breaking capacity, dimensions and terminal configuration against the equipment documentation.
Typical Applications
- Variable frequency drives and industrial motor control systems.
- Power converters and rectifier assemblies.
- Industrial inverters and power supplies.
- Uninterruptible power supply systems.
- Renewable energy and energy storage equipment.
- High-power semiconductor protection circuits.
Technical Specifications
Tick the specs you need, then view products that match.
| Fuse Indication | Striker | |
|---|---|---|
| Fuse Type | Semiconductor | |
| Fuse Class | aR | |
| Voltage | 550 V | |
| Item number | B300588 | |
| Catalogue No | PC33UD55V2000TF | |
| Description | Square Body High-Speed Fuse Protistor® Size 33 aR 550VAC IEC 600VAC UL 2000A With Striker Flush ends metric threads | |
| EAN/UPC Code | 3605340330724 | |
| Rated voltage AC UL | 600 V | |
| Rated voltage AC IEC | 550 V | |
| Ampere Rating | 2000 A | |
| RoHS Compliant | Yes | |
| AC or DC | AC | |
| Speed/Characteristic | aR | |
| Fuse Size | 33 | |
| Mounting | Bolted | |
| Clearing I2t At Rated Voltage | 4500 kA²s | |
| Melting I2t | 950 kA²s | |
| AC Max I.R./Breaking Capacity | I1: 200 kA | |
| Design Details | Reinforced Terminal | |
| Indication System | Yes | |
| Indication System Type | Striker | |
| Connection/Terminal Material | Silver-Plated Brass | |
| Connection/Terminal Type | Flush ends | |
| Product Width | 73 mm | |
| Product Length | 50.6 mm | |
| Product Height | 78.5 mm | |
| Sell Pack Quantity | 3 EA | |
| Sell Pack Weight | 2.4168 kg | |
| Sell Pack Width | 85 mm | |
| Sell Pack Length | 245 mm | |
| Sell Pack Height | 95 mm | |
| Product group | Semiconductor Protection Fuses | |
| Body/Insulating Material | Ceramic | |
| Product Weight | 0.8056 kg | |
| Power Dissipation at Rated Current Value | 250 W | |
| HS Code | 85361090 |
Frequently Asked Questions
What is the Mersen B300588 used for?
The Mersen B300588 is used to protect sensitive power semiconductor components against damaging short-circuit currents in industrial power electronic equipment.
What is the current rating of the B300588?
The Mersen B300588 has a rated current of 400 A.
What voltage is this fuse rated for?
The fuse is rated for up to 1250 V AC under IEC standards and 1300 V AC under UL standards.
What does the aR fuse classification mean?
The aR classification identifies an ultra-fast, partial-range fuse designed primarily to provide short-circuit protection for semiconductor devices.
Where is the Mersen B300588 commonly installed?
It is commonly installed in variable frequency drives, converters, inverters, UPS systems, renewable energy equipment and other high-power semiconductor applications.
Trusted for Industrial Semiconductor Protection
Mersen Protistor® high-speed fuses are widely used by electrical engineers, equipment manufacturers and maintenance professionals to protect valuable semiconductor components in demanding power conversion systems.
