Why Choose the Mersen S087508 5 x 20 mm Medium Time-Lag Miniature Fuse?
The Mersen S087508 is a compact and dependable 5 x 20 mm medium time-lag miniature fuse designed to protect industrial electrical equipment and electronic circuits against sustained overloads and short-circuit currents. Also identified by the catalogue reference MI5SU25V12.5, it provides reliable circuit protection in applications where temporary current surges may occur during normal operation.
Its semi-time-lag operating characteristic allows the fuse to tolerate brief inrush currents generated by equipment such as transformers, power supplies and inductive loads. This helps reduce unnecessary fuse operation during start-up while ensuring that prolonged excessive current is safely interrupted.
Rated at 12.5 A and 250 V AC, the Mersen S087508 is suitable for industrial control panels, electrical distribution equipment, automation systems and OEM machinery. Its standard 5 x 20 mm ceramic construction enables straightforward installation in a compatible miniature fuse holder or clip.
Key Advantages
- Medium time-lag characteristic withstands temporary inrush currents.
- 12.5 A current rating for industrial circuit protection.
- 250 V AC rated voltage for low-voltage electrical equipment.
- Compact 5 x 20 mm cylindrical fuse format.
- Ceramic construction provides dependable thermal and electrical performance.
- Helps minimise nuisance fuse operation during equipment start-up.
Key Features
- Mersen 5SU miniature fuse series.
- 12.5 A rated current.
- 250 V AC rated voltage.
- Medium time-lag or semi-time-delay operating characteristic.
- Standard 5 x 20 mm IEC miniature fuse format.
- Robust ceramic fuse body.
- Designed for overload and short-circuit protection.
- Compatible with suitable 5 x 20 mm fuse holders and clips.
Reliable Protection for Circuits with Start-Up Current
Medium time-lag miniature fuses are designed to tolerate short-duration current peaks that occur when transformers, power supplies and other inductive equipment are energised. These temporary surges may be part of normal operation and could cause nuisance interruption if a quick-acting fuse were installed.
The Mersen S087508 provides a controlled delay during acceptable start-up currents while disconnecting the circuit when excessive current persists. This balance helps protect wiring and connected components while supporting reliable equipment operation and reducing unnecessary maintenance.
Typical Applications
- Industrial control panels.
- Electrical distribution equipment.
- Automation systems.
- Electronic power supplies.
- Control transformers.
- Instrumentation equipment.
- OEM machinery.
- Commercial and industrial electrical equipment.
