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MERSEN FUSE A050 URL 025 T13 I A050URL025T13I
Engineered for precision protection of semiconductors and other sensitive components, this 10x38mm Protistor® fuse delivers reliable high-speed performance at 500VAC up to 25A, meeting IEC standards for demanding industrial applications.
£17.47
Why Choose the Mersen B076936 A050URL25T13I Protistor® High-Speed Fuse?
The Mersen B076936, also identified by catalogue number A050URL25T13I, is a compact Protistor® high-speed cylindrical semiconductor fuse with striker. It is specifically designed to protect sensitive power semiconductor devices by rapidly interrupting damaging short-circuit currents in industrial power electronic systems.
As part of the Mersen Protistor® 10 × 38 aR range, this fuse combines fast current-limiting performance with an extremely high breaking capacity. Its low let-through energy helps reduce electrical and thermal stress on components such as IGBTs, thyristors, power diodes and rectifiers, supporting improved equipment reliability and reduced downtime.
With a rated current of 25 A, a rated voltage of 500 V AC and a maximum breaking capacity of 50 kA, the B076936 is suitable for drives, converters, power supplies and industrial control equipment. Its integrated striker provides mechanical fuse-operation indication for compatible fuse holders and monitoring accessories.
Key Advantages
- Ultra-fast aR fuse for power semiconductor short-circuit protection.
- 25 A rated current for industrial power electronic circuits.
- 500 V AC IEC voltage rating.
- High 50 kA breaking capacity for effective fault interruption.
- Integrated mechanical striker supports fuse-status indication.
- Compact 10 × 38 mm cylindrical format for clip-mounted fuse holders.
Key Features
- Mersen Protistor® semiconductor protection fuse.
- Item number: B076936.
- Catalogue number: A050URL25T13I.
- 25 A rated current.
- 500 V AC IEC rated voltage.
- aR utilisation category for partial-range semiconductor protection.
- 50 kA maximum AC breaking capacity.
- Integrated striker indication system.
- Silver-plated copper ferrule terminals.
- Durable ceramic fuse body.
Reliable Protection for Power Semiconductors
High-speed semiconductor fuses such as the Mersen B076936 are designed to interrupt severe fault currents before excessive energy reaches vulnerable electronic components. Their rapid current-limiting action helps minimise damage to semiconductors and surrounding equipment, supporting longer service life and improved system availability.
The aR operating characteristic provides partial-range protection against short-circuit currents. Separate overload protection is normally required elsewhere within the electrical circuit. The integrated striker can also activate compatible indication or monitoring equipment when the fuse operates.
Typical Applications
- Variable frequency drives and motor-control equipment.
- Industrial power converters and rectifiers.
- Inverters and switching power supplies.
- Uninterruptible power supply systems.
- Industrial automation control panels.
- Semiconductor-controlled heating equipment.
- Power electronic assemblies and OEM machinery.
Technical Specifications
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| Fuse Indication | Striker | |
|---|---|---|
| Fuse Type | Semiconductor | |
| Fuse Size | 10x38 mm | |
| Fuse Class | aR | |
| Voltage | 500 V | |
| Item number | B076936 | |
| Catalogue No | A050URL25T13I | |
| Description | High-Speed Cylindrical Fuse Protistor® Size 10x38 aR 500VAC IEC 25A With Striker | |
| EAN/UPC Code | 3605340020670 | |
| Rated voltage AC IEC | 500 V | |
| Ampere Rating | 25 A | |
| RoHS Compliant | Yes | |
| AC or DC | AC | |
| Speed/Characteristic | aR | |
| Fuse Size | 10x38 | |
| Mounting | Clip | |
| Clearing I2t At Rated Voltage | 580 A²s | |
| Melting I2t | 37 A²s | |
| AC Max I.R./Breaking Capacity | I1: 50 kA | |
| Design Details | URL | |
| Indication System | Yes | |
| Indication System Type | Striker | |
| Connection/Terminal Material | Silver-Plated Copper | |
| Connection/Terminal Type | Ferrule | |
| Product Diameter | 10.3 mm | |
| Product Length | 39.2 mm | |
| Sell Pack Quantity | 10 EA | |
| Sell Pack Weight | 0.092 kg | |
| Sell Pack Width | 54 mm | |
| Sell Pack Length | 80 mm | |
| Sell Pack Height | 12 mm | |
| Product group | Semiconductor Protection Fuses | |
| Body/Insulating Material | Ceramic | |
| Product Weight | 0.0092 kg | |
| Power Dissipation at Rated Current Value | 4.25 W | |
| HS Code | 85361050 |
Frequently Asked Questions
What is the Mersen B076936 used for?
The B076936 protects power semiconductor devices used in drives, converters, rectifiers, inverters and other industrial power electronic equipment against damaging short-circuit currents.
What is the current rating of this fuse?
The Mersen B076936 has a rated current of 25 A.
What voltage is the A050URL25T13I rated for?
The fuse is rated for operation at up to 500 V AC according to IEC specifications.
What does the aR fuse characteristic mean?
The aR characteristic identifies an ultra-fast partial-range fuse designed to protect power semiconductors against short-circuit currents. Separate overload protection is generally required.
What is the purpose of the integrated striker?
The mechanical striker operates when the fuse clears a fault and can activate compatible visual or electrical indication accessories to help identify the operated fuse.
Trusted for Industrial Semiconductor Protection
Mersen Protistor® high-speed fuses are widely specified by automation engineers, panel builders and equipment manufacturers for reliable protection of critical semiconductor-based power systems.
