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MERSEN FUSE 250V 5HT 1,25A 5.20 MI5HT25V1,25
Mersen X085373 MI5HT25V1.25 time-delay miniature fuse with a 1.25 A current rating, 250 V AC rating, 5 x 20 mm dimensions and 1,500 A breaking capacity.
Why Choose the Mersen X085373 5HT Time-Delay Miniature Fuse?
The Mersen X085373, catalogue reference MI5HT25V1.25, is a high-quality 5 × 20 mm time-delay miniature fuse designed to protect industrial equipment, electrical distribution circuits and electronic devices against overcurrent and short-circuit faults. Its time-lag characteristic enables the fuse to withstand temporary inrush currents while still providing dependable protection during sustained overload conditions.
As part of the Mersen 5HT IEC Miniature Fuse series, the X085373 is ideally suited to applications containing motors, transformers and power supplies that experience high start-up currents. The fuse helps minimise nuisance operation while maintaining reliable protection for valuable equipment.
With a rated current of 1.25 A, a rated voltage of 250 V AC and a breaking capacity of 1,500 A, the X085373 provides dependable circuit protection in a compact, industry-standard format compatible with suitable 5 × 20 mm fuse holders.
Key Advantages
- Compact 5 × 20 mm miniature cartridge fuse.
- Time-delay characteristic tolerates temporary inrush currents.
- 1.25 A rated current for industrial and electronic applications.
- 250 V AC rated voltage.
- 1,500 A breaking capacity for dependable fault interruption.
- Ideal for transformers, motors and inductive loads.
- Industry-standard dimensions simplify replacement and maintenance.
Key Features
- Mersen 5HT IEC Miniature Fuse series.
- MI5HT25V1.25 catalogue reference.
- 5 × 20 mm cylindrical fuse.
- 1.25 A nominal current rating.
- 250 V AC rated voltage.
- Time-delay (time-lag) operating characteristic.
- 1,500 A AC breaking capacity.
- 2.3 A²s pre-arcing I²t.
- Nickel-plated brass contact caps.
- Manufactured to IEC 60127-2 Sheet 5.
Reliable Protection for Inductive Loads
Time-delay miniature fuses are specifically designed to withstand the temporary inrush currents generated by motors, transformers and switched-mode power supplies during start-up. This helps reduce unnecessary fuse replacement while maintaining effective protection against sustained overloads and fault currents.
The Mersen X085373 combines a compact industry-standard format with dependable electrical performance, making it suitable for OEM equipment, industrial control panels and electrical distribution systems where reliable circuit protection is essential.
Typical Applications
- Industrial control panels.
- Motor control circuits.
- Transformer protection.
- Power supplies.
- Electronic equipment.
- Instrumentation.
- OEM machinery.
- General industrial electrical systems.
Technical Specifications
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| Current | 1.25 A | |
|---|---|---|
| Voltage | 250 V | |
| Device Type | Fuse link | |
| Fuse Type | Miniature | |
| Fuse Size | 5x20 mm | |
| Fuse Class | Time delay | |
| Manufacturer | Mersen | |
| Series | 5HT IEC Miniature Fuses | |
| Item number | X085373 | |
| Catalogue number | MI5HT25V1.25 | |
| Product type | Time-delay miniature fuse | |
| Fuse size | 5 × 20 mm | |
| Rated current | 1.25 A | |
| Rated voltage | 250 V AC | |
| Operating characteristic | Time-delay | |
| Breaking capacity | 1,500 A | |
| Pre-arcing I²t | 2.3 A²s | |
| Power loss at rated current | 0.53 W | |
| Maximum voltage drop | 0.20 V | |
| Contact cap material | Nickel-plated brass | |
| Applicable standard | IEC 60127-2 Sheet 5 | |
| EAN | 3605340068467 | |
| RoHS compliant | Yes |
Frequently Asked Questions
What is the Mersen X085373 used for?
The Mersen X085373 protects electrical and electronic equipment against overloads and short circuits while tolerating temporary start-up currents.
What is the current rating of the X085373?
The fuse has a nominal current rating of 1.25 A.
Is this a fast-acting or time-delay fuse?
The X085373 is a time-delay (time-lag) fuse designed for applications with temporary inrush currents.
What size fuse holder is required?
The fuse should be installed in a compatible 5 × 20 mm miniature fuse holder with appropriate electrical ratings.
What applications is the X085373 suitable for?
It is commonly used for protecting motors, transformers, industrial controls, power supplies and other electrical equipment requiring time-delay overcurrent protection.
Trusted Circuit Protection from Mersen
Mersen miniature fuses are trusted worldwide by machine builders, electrical engineers and equipment manufacturers to deliver dependable overcurrent protection across industrial, commercial and electronic applications.
