Why Choose the Mersen J089455 Medium Time-Lag Miniature Fuse?
The Mersen J089455, also identified by the catalogue number MI6SA40V2P, is a compact semiconductor miniature fuse designed to protect sensitive electronic components and industrial control equipment against overcurrent and short-circuit faults. It forms part of Mersen’s SA range of 6.3 × 32 mm miniature fuse-links for demanding electrical and electronic applications.
Its medium time-lag SA characteristic allows the fuse to tolerate temporary current surges and normal equipment inrush without unnecessary operation. It still responds reliably to sustained overloads and fault currents, providing a practical balance between circuit protection and operational continuity.
With a rated current of 2 A, a rated voltage of 400 V AC and a compact cylindrical cartridge format, the J089455 is suitable for control apparatus, power supplies, instrumentation and semiconductor circuits. Its integrated striker indicator can help identify when the fuse has operated and may be used with compatible signalling accessories.
Key Advantages
- Medium time-lag SA characteristic tolerates temporary inrush currents.
- 2 A rated current for electronic and industrial control circuits.
- 400 V AC voltage rating for compatible industrial equipment.
- Compact 6.3 × 32 mm cylindrical cartridge format.
- Integrated striker supports clear fuse-status indication.
- Very high breaking capacity for dependable fault interruption.
Key Features
- Mersen SA semiconductor miniature fuse series.
- Catalogue number: MI6SA40V2P.
- 2 A rated current.
- 400 V AC rated voltage.
- Medium time-lag operating characteristic.
- Integrated striker indicator.
- Ferrule terminals for compatible fuse clips and holders.
- Compact clip-mounted construction.
Reliable Protection with Inrush Current Tolerance
Electronic and industrial equipment can draw temporary current peaks during start-up or normal switching operations. The Mersen J089455 uses a medium time-lag fuse element that tolerates these brief surges while remaining capable of disconnecting the circuit during sustained overload or short-circuit conditions.
Its compact cartridge fits compatible 6.3 × 32 mm fuse clips and holders, allowing straightforward installation and replacement. The integrated striker helps maintenance personnel identify an operated fuse quickly and can support remote indication when paired with suitable accessories.
Typical Applications
- Industrial control and automation equipment.
- Semiconductor and electronic component protection.
- Electronic power supplies and control modules.
- Transformer and capacitive circuits.
- Instrumentation and measuring equipment.
- Circuits subject to temporary inrush currents.
