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MERSEN FUSE 250V 5HT 1A 5.20 MI5HT25V1
Mersen W085372 1 A time-delay 5 x 20 mm ceramic miniature fuse rated at 250 V AC with a 1,500 A breaking capacity for motors and industrial circuit protection.
Why Choose the Mersen W085372 5HT Miniature Fuse?
The Mersen W085372 is a dependable time-delay ceramic miniature cartridge fuse designed to protect electrical distribution circuits, motors and industrial equipment against overloads and short circuits. Part of the Mersen 5HT IEC miniature fuse series, it combines effective fault protection with the ability to withstand brief, high inrush currents during normal equipment start-up.
With a rated current of 1 A and a rated voltage of 250 V AC, the W085372 is suitable for control equipment, power supplies, transformers, small motors and other electrical devices that may draw a temporary surge when energised. Its time-delay characteristic helps reduce nuisance fuse operation while maintaining reliable protection against sustained overcurrent conditions.
The fuse features a standard 5 × 20 mm ceramic cartridge construction and a high 1,500 A breaking capacity. Its compact dimensions allow straightforward installation into compatible fuse clips and miniature fuse holders used throughout industrial control panels and OEM electrical equipment.
Key Advantages
- Time-delay characteristic withstands temporary start-up and inrush currents.
- 1 A rated current for low-current industrial circuits.
- 250 V AC rated voltage for electrical equipment applications.
- High 1,500 A breaking capacity for dependable fault interruption.
- Standard 5 × 20 mm miniature cartridge format.
- Durable ceramic construction for demanding industrial environments.
Key Features
- Mersen 5HT IEC miniature fuse series.
- Time-delay operating characteristic.
- 1 A rated current.
- 250 V AC rated voltage.
- 1,500 A AC breaking capacity.
- Compact 5 × 20 mm ceramic cartridge.
- Extinguishing-agent-filled construction.
- Nickel-plated brass contact caps.
Reliable Protection for Equipment with Inrush Current
Time-delay miniature fuses are designed to tolerate temporary current surges produced when motors, transformers, capacitors and power supplies are energised. This controlled response helps prevent unnecessary fuse operation during normal start-up while still disconnecting the circuit during a sustained overload or short circuit.
The Mersen W085372 combines a 1 A current rating with ceramic construction and a 1,500 A breaking capacity. This makes it suitable for protecting industrial control equipment, motors and electrical distribution circuits where reliable operation and safe fault interruption are essential.
Typical Applications
- Industrial control panels.
- Small motors and inductive loads.
- Power supplies and control transformers.
- Electrical distribution circuits.
- Instrumentation and measuring equipment.
- OEM machinery and automation systems.
Technical Specifications
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| Current | 1 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 | |
| Model | W085372 | |
| Manufacturer reference | MI5HT25V1 | |
| Product type | Ceramic miniature cartridge fuse | |
| Rated current | 1 A | |
| Rated voltage | 250 V AC | |
| Speed / characteristic | Time delay | |
| Fuse size | 5 × 20 mm | |
| Breaking capacity | 1,500 A AC | |
| Pre-arcing I²t | 1.46 A²s | |
| Power loss at rated current | 0.44 W | |
| Maximum voltage drop | 0.18 V | |
| Body material | Ceramic | |
| Contact cap material | Nickel-plated brass | |
| Construction | Extinguishing-agent filled | |
| Mounting type | Fuse clip or compatible fuse holder | |
| Product diameter | 5.1 mm | |
| Product length | 20 mm | |
| Approximate weight | 0.0012 kg | |
| Standard | IEC 60127-2 Sheet 5 | |
| RoHS compliant | Yes | |
| GTIN / EAN | 3605340068436 |
Frequently Asked Questions
What is the Mersen W085372 used for?
The W085372 provides time-delay overcurrent protection for electrical distribution circuits, motors, industrial equipment and devices with temporary start-up currents.
What is the current rating of the Mersen W085372?
The fuse has a rated current of 1 A.
What voltage is the W085372 rated for?
The Mersen W085372 is rated for operation at up to 250 V AC.
Is the Mersen W085372 a fast-acting fuse?
No. It is a time-delay 5HT fuse designed to withstand brief inrush currents before operating during a sustained overload.
What size is the Mersen W085372 fuse?
It uses the standard 5 × 20 mm miniature ceramic cartridge format.
Trusted by Electrical Professionals Worldwide
Mersen miniature fuses are widely specified by equipment manufacturers, panel builders and maintenance engineers for dependable protection across industrial electrical and electronic applications.
