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MERSEN FUSE 250V 5ST 16 A 5X20 MI5ST25V16
Mersen A233450 5 × 20 mm time-delay glass cartridge fuse rated at 16 A and 250 V AC with a 100 A breaking capacity for industrial and electrical circuit protection.
Why Choose the Mersen A233450 Time-Delay Glass Cartridge Fuse?
The Mersen A233450, catalogue reference MI5ST25V16, is a compact and dependable time-delay miniature cartridge fuse designed to protect electrical distribution circuits and industrial equipment against sustained overloads and short-circuit faults. As part of the Mersen 5ST IEC miniature fuse series, it combines reliable overcurrent protection with the ability to withstand brief, high starting currents.
Rated at 16 A and 250 V AC, the A233450 is suitable for circuits containing motors, transformers, power supplies and other loads that may produce a temporary inrush current when energised. Its time-delay characteristic helps prevent nuisance fuse operation during normal equipment start-up while maintaining dependable protection against prolonged overcurrent conditions.
The fuse features a standard 5 × 20 mm glass body for installation in compatible clips and miniature fuse holders. Its compact cylindrical construction and transparent body make it a practical protection solution for industrial control equipment, electrical appliances, power supplies and OEM electrical assemblies.
Key Advantages
- Compact 5 × 20 mm time-delay cartridge fuse.
- 16 A rated current for industrial and electrical circuits.
- 250 V AC rated voltage.
- Time-delay operation withstands brief starting and inrush currents.
- 100 A AC breaking capacity for reliable fault interruption.
- Transparent glass body allows visual fuse-element inspection.
- Standard cylindrical format simplifies installation and replacement.
- Suitable for electrical distribution and industrial applications.
Key Features
- Mersen 5ST IEC miniature fuse series.
- 16 A rated current.
- 250 V AC rated voltage.
- Time-delay fuse characteristic.
- 100 A maximum AC breaking capacity.
- 1582 A²s melting I²t.
- Standard 5 × 20 mm cylindrical fuse format.
- Glass insulating body.
- Clip or compatible fuse-holder mounting.
- Designed to tolerate short-duration motor starting currents.
Dependable Protection for Circuits with Inrush Current
Time-delay fuses such as the Mersen A233450 are designed to tolerate the brief current surge that may occur when motors, transformers and power supplies are switched on. This helps prevent unnecessary fuse replacement while maintaining protection against sustained overloads and short-circuit conditions.
The A233450 should be selected according to the circuit voltage, continuous operating current, expected inrush current and prospective fault current. Its standard 5 × 20 mm dimensions provide compatibility with a wide range of miniature fuse clips and holders.
Typical Applications
- Small motors and motor-control circuits.
- Transformer circuits.
- Industrial control equipment.
- Electrical distribution circuits.
- Power supplies and conversion equipment.
- Automation and process-control systems.
- OEM electrical and electronic assemblies.
Technical Specifications
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| Current | 16 A | |
|---|---|---|
| Voltage | 250 V | |
| Device Type | Fuse link | |
| Fuse Type | Miniature | |
| Fuse Size | 5x20 mm | |
| Fuse Class | Time delay | |
| Manufacturer | Mersen | |
| Series | IEC Miniature Fuses 5ST | |
| Model | A233450 | |
| Catalogue number | MI5ST25V16 | |
| Product type | Time-delay miniature cartridge fuse | |
| Rated current | 16 A | |
| Rated voltage | 250 V AC | |
| Current type | AC | |
| Fuse characteristic | Time-delay | |
| Maximum AC breaking capacity | 100 A | |
| Melting I²t | 1582 A²s | |
| Fuse size | 5 × 20 mm | |
| Product diameter | 5 mm | |
| Product length | 20 mm | |
| Mounting type | Clip or fuse-holder mounting | |
| Body material | Glass | |
| Product group | Miniature fuses | |
| Compliance | CE, UKCA, REACH and RoHS compliant |
Frequently Asked Questions
What is the Mersen A233450 used for?
The Mersen A233450 is a time-delay miniature cartridge fuse used to protect electrical distribution circuits and industrial equipment against sustained overloads and short circuits.
What are the voltage and current ratings of this fuse?
The A233450 is rated at 16 A and 250 V AC.
What does the time-delay characteristic mean?
The time-delay characteristic allows the fuse to withstand brief starting and inrush currents while still operating when an unsafe overcurrent condition continues.
What is the breaking capacity of the A233450?
The fuse has a maximum AC breaking capacity of 100 A.
What size is the Mersen A233450?
The fuse uses the standard 5 × 20 mm cylindrical format and is designed for installation in compatible clips and miniature fuse holders.
Trusted Circuit Protection from Mersen
Mersen miniature fuses are widely used by equipment manufacturers, panel builders and maintenance engineers for dependable overcurrent protection and consistent performance in industrial electrical applications.
