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MERSEN FUSE 250V 5ST 0,063A 5.20 MI5ST25V0,063
Mersen D090531 63 mA time delay 5 × 20 mm glass cartridge fuse rated at 250 V AC for reliable protection of sensitive electrical and electronic equipment.
Why Choose the Mersen D090531 63 mA Time Delay Glass Cartridge Fuse?
The Mersen D090531 is a precision 5 × 20 mm time delay glass cartridge fuse designed to provide dependable overcurrent protection for sensitive electrical and electronic equipment. Part of the trusted Mersen 5ST IEC Miniature Fuse series, it combines reliable overload protection with the ability to withstand temporary inrush currents encountered during equipment start-up.
Its time delay (slow blow) characteristic helps prevent nuisance fuse operation whilst maintaining effective protection against overloads and short circuits. The transparent glass body enables quick visual inspection of the fuse element during servicing and maintenance.
Rated at 63 mA with a 250 V AC voltage rating, the D090531 is suitable for instrumentation, laboratory equipment, measuring devices, industrial electronics and OEM equipment requiring dependable low-current circuit protection.
Key Advantages
- Reliable time delay glass cartridge fuse for low-current protection.
- 63 mA current rating for sensitive electrical circuits.
- 250 V AC rated voltage for IEC applications.
- Time delay characteristic withstands temporary inrush currents.
- Transparent glass body allows easy visual inspection.
- Standard 5 × 20 mm format fits compatible fuse holders.
Key Features
- Mersen 5ST IEC Miniature Fuse series.
- 63 mA rated current.
- 250 V AC rated voltage.
- Time delay (slow blow) operating characteristic.
- 5 × 20 mm glass cartridge construction.
- 35 A breaking capacity.
- Glass body for rapid visual inspection.
- RoHS compliant.
Reliable Low Current Circuit Protection
Time delay miniature fuses are designed to tolerate short-duration current surges whilst continuing to provide dependable protection against sustained overloads and short circuits. They are particularly suited to sensitive electronic equipment where occasional inrush currents occur during normal operation.
The Mersen D090531 combines reliable low-current protection with a compact 5 × 20 mm design, making it suitable for industrial electronics, laboratory equipment, instrumentation and OEM electrical assemblies requiring dependable circuit protection.
Typical Applications
- Instrumentation and measuring equipment.
- Industrial electronics.
- Laboratory equipment.
- Power supplies.
- Electronic control systems.
- OEM electrical equipment.
Technical Specifications
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| Voltage | 250 V | |
|---|---|---|
| Device Type | Fuse link | |
| Fuse Size | 5x20 mm | |
| Fuse Class | Time delay | |
| Manufacturer | Mersen | |
| Series | 5ST IEC Miniature Fuses | |
| Model | D090531 | |
| Manufacturer reference | MI5ST25V0.063/100 | |
| Product type | Time delay glass cartridge fuse | |
| Current rating | 63 mA (0.063 A) | |
| Rated voltage | 250 V AC | |
| Fuse size | 5 × 20 mm | |
| Operating characteristic | Time delay (slow blow) | |
| Body material | Glass | |
| Breaking capacity | 35 A | |
| Pre-arcing I²t | 0.022 A²s | |
| Power dissipation | 0.27 W | |
| Maximum voltage drop | 1.54 V | |
| Standards | IEC 60127-2 Sheet 4, RoHS compliant |
Frequently Asked Questions
What is the Mersen D090531 used for?
It provides reliable overcurrent protection for sensitive electrical and electronic equipment whilst allowing temporary inrush currents during normal operation.
What is the current rating of this fuse?
The Mersen D090531 has a rated current of 63 mA (0.063 A).
Is this a fast acting fuse?
No. It is a time delay (slow blow) glass cartridge fuse designed to tolerate brief inrush currents.
What size is the fuse?
The fuse is manufactured in the standard 5 × 20 mm miniature cartridge format.
Where is this fuse commonly installed?
It is commonly used in instrumentation, electronic equipment, laboratory devices, power supplies and industrial control systems.
Trusted for Precision Circuit Protection
Mersen miniature fuses are trusted worldwide by engineers and equipment manufacturers for delivering dependable circuit protection in industrial, commercial and electronic applications.
