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 6,9 URS 17/50 6,9URS17/50
The Protistor® 17×49 gR 690V AC UL 50A fuse-link delivers superior circuit protection for industrial power distribution and control applications, conforming to British Standard dimensions and safety requirements.
£20.87
Why Choose the Mersen P075890 High-Speed Semiconductor Fuse?
The Mersen P075890 is a high-performance Protistor® semiconductor fuse-link designed to provide rapid and dependable protection for sensitive power electronic equipment. Manufactured in a compact British Standard format, it combines extremely high breaking capacity with effective current limitation for demanding industrial power conversion and control applications.
Featuring a gR full-range operating class, the P075890 protects power semiconductors against both overload and short-circuit currents. Its fast operating characteristics help restrict peak fault current and let-through energy, reducing electrical, thermal and mechanical stress on components such as diodes, thyristors, IGBTs and rectifier assemblies.
With a rated current of 50 A and an IEC rated voltage of 690 V AC, the Mersen P075890 is suitable for variable frequency drives, industrial rectifiers, inverters, UPS equipment and power converters. Its compact 17 × 49 mm BS88-4 fuse-link format supports straightforward installation in compatible fuse holders and semiconductor protection assemblies.
Key Advantages
- High-speed semiconductor fuse for industrial power electronics.
- 50 A rated current for control and power conversion circuits.
- 690 V AC IEC voltage rating for demanding industrial systems.
- gR full-range operating class protects against overloads and short circuits.
- Extremely high breaking capacity helps minimise equipment damage.
- Supports selective coordination with other fuses in the distribution circuit.
Key Features
- Mersen Protistor® BS88-4 semiconductor fuse range.
- 50 A nominal current rating.
- 690 V AC IEC rated voltage.
- 700 V AC and 700 V DC UL ratings.
- gR full-range semiconductor protection characteristic.
- Compact 17 × 49 mm fuse-link body.
- British Standard bolted blade connection format.
- UL Recognised construction for international industrial applications.
Full-Range Protection for Power Electronics
The Mersen P075890 is engineered to interrupt dangerous currents before excessive energy can damage sensitive semiconductor devices. Its rapid operation and current-limiting performance help reduce fault energy within power conversion equipment, improving system reliability and limiting the risk of costly component failure.
Unlike partial-range aR fuse-links, the P075890 has a gR characteristic that clears both overload and short-circuit currents. This provides comprehensive semiconductor protection and can simplify coordination within correctly designed industrial electrical systems.
Typical Applications
- Variable frequency drives and motor-control equipment.
- Industrial rectifiers and power converters.
- Inverters and renewable-energy conversion systems.
- Uninterruptible power supply equipment.
- Industrial battery chargers and power supplies.
- Semiconductor-controlled machinery and automation systems.
Technical Specifications
Tick the specs you need, then view products that match.
| Fuse Type | Semiconductor | |
|---|---|---|
| Fuse Size | 17x49 mm | |
| Fuse Class | aR | |
| Voltage | 690 V | |
| Item number | P075890 | |
| Catalogue No | BS17US69V50 | |
| Description | British Standard fuse-link Protistor® 17x49 gR 690V AC UL 50A | |
| EAN/UPC Code | 3605340012583 | |
| Rated voltage AC UL | 700 V | |
| Rated voltage DC UL | 700 V | |
| Rated voltage AC IEC | 690 V | |
| Ampere Rating | 50 A | |
| AC or DC | AC | |
| Speed/Characteristic | aR | |
| Fuse Size | 17x49 | |
| Mounting | Bolted | |
| Clearing I2t At Rated Voltage | 1420 A²s | |
| Melting I2t | 156 A²s | |
| AC Max I.R./Breaking Capacity | I1: 200 kA | |
| Connection/Terminal Material | Copper | |
| Connection/Terminal Type | L Brackets | |
| Product Diameter | 18.5 mm | |
| Product Length | 77.2 mm | |
| Sell Pack Quantity | 10 EA | |
| Sell Pack Weight | 0.39 kg | |
| Sell Pack Width | 100 mm | |
| Sell Pack Length | 195 mm | |
| Sell Pack Height | 25 mm | |
| Product group | Semiconductor Protection Fuses | |
| Body/Insulating Material | Ceramic | |
| Product Weight | 0.039 kg | |
| Power Dissipation at Rated Current Value | 12.6 W | |
| HS Code | 85361050 | |
| Country of Manufacture | India |
Frequently Asked Questions
What is the Mersen P075890 used for?
The Mersen P075890 provides high-speed overload and short-circuit protection for power semiconductors used in drives, rectifiers, converters, inverters and other industrial electronic equipment.
What is the current rating of the Mersen P075890?
The fuse has a nominal current rating of 50 A.
What voltage is the Mersen P075890 rated for?
The P075890 is rated at 690 V AC under IEC standards and at 700 V AC or DC under UL ratings.
What does the gR operating class mean?
The gR classification indicates full-range semiconductor protection, allowing the fuse to clear both overload and short-circuit currents.
Does the Mersen P075890 include a striker?
No. The P075890 is a non-indicating fuse-link and does not incorporate an integrated striker. A striker-equipped 50 A version should be selected where remote or visual operation indication is required.
Trusted for Semiconductor Circuit Protection
Mersen Protistor® high-speed fuses are widely specified by OEMs, panel builders and industrial engineers for reliable protection of critical semiconductor and power conversion equipment.
