Why Choose the Mersen R094821 5 x 20 mm Time-Lag Miniature Fuse?
The Mersen R094821 is a dependable 5 x 20 mm time-lag miniature fuse designed to protect electrical and electronic equipment against sustained overloads and short-circuit currents. Part of the Mersen 5HT miniature fuse range, it combines compact dimensions with a delayed operating characteristic suitable for circuits that experience temporary start-up surges.
Unlike a quick-acting fuse, the R094821 can tolerate brief inrush currents generated when equipment such as motors, transformers and power supplies is energised. This helps prevent unnecessary fuse operation during normal start-up conditions while maintaining effective protection against prolonged excessive current.
With a rated current of 0.315 A and a rated voltage of 250 V AC, the Mersen R094821 is suitable for low-current control, instrumentation and electronic circuits. Its standard 5 x 20 mm format enables straightforward installation in a compatible miniature fuse holder.
Key Advantages
- Time-lag characteristic withstands temporary start-up currents.
- 0.315 A current rating for low-current circuit protection.
- 250 V AC voltage rating for electrical and electronic equipment.
- Compact 5 x 20 mm miniature fuse format.
- Helps reduce nuisance fuse operation caused by brief current surges.
- Manufactured by Mersen for consistent and dependable performance.
Key Features
- Mersen 5HT miniature fuse range.
- 0.315 A rated current.
- 250 V AC rated voltage.
- Time-lag operating characteristic.
- Standard 5 x 20 mm cylindrical format.
- Designed for overload and short-circuit protection.
- Suitable for circuits with temporary inrush currents.
- Compatible with appropriate 5 x 20 mm fuse holders.
Reliable Protection for Circuits with Inrush Current
Time-lag fuses are designed to withstand brief current peaks that occur during normal equipment start-up. These temporary surges may be produced by transformers, motors, capacitive loads and power supplies and do not necessarily indicate an electrical fault.
The Mersen R094821 delays operation during these acceptable short-duration surges but disconnects the circuit when excessive current persists. This balance helps protect connected components while reducing unnecessary maintenance caused by nuisance fuse replacement.
Typical Applications
- Industrial control circuits.
- Electronic power supplies.
- Instrumentation and measuring equipment.
- Small transformers.
- Automation equipment.
- Control and signalling devices.
- OEM electrical equipment.
- Low-current electronic assemblies.
