Why Choose the Mersen H220025 Medium Voltage Fuse?
The Mersen H220025 is a specialised medium voltage cylindrical fuse designed to protect potential transformers, voltage transformers and associated electrical equipment against damaging fault currents. Also identified by the commercial reference FR20GC155C3,15, it provides precise current-limiting protection for compatible medium voltage installations.
Engineered for rapid fault interruption, the H220025 restricts the peak current and electrical energy permitted to pass through the protected circuit during a short circuit. This helps minimise thermal and mechanical stress on transformers, conductors, switchgear and connected metering or protection equipment.
With a rated voltage of 15.5 kV AC, a rated current of 3.15 A and a compact 20 × 254 mm cylindrical body, the Mersen H220025 is suitable for compatible fuse holders and transformer protection assemblies. Its high voltage capability and low current rating make it particularly suitable for instrument transformer and auxiliary circuit protection.
Key Advantages
- Specialised medium voltage potential transformer fuse.
- 15.5 kV AC rated voltage for compatible medium voltage systems.
- 3.15 A rated current for precise low-current protection.
- Current-limiting operation helps reduce damaging fault energy.
- Compact 20 × 254 mm cylindrical construction.
- Manufactured by Mersen for dependable circuit protection performance.
Key Features
- Mersen medium voltage fuse range.
- Manufacturer reference: H220025.
- Commercial reference: FR20GC155C3,15.
- 15.5 kV AC nominal voltage rating.
- 3.15 A nominal current rating.
- 20 × 254 mm cylindrical fuse body.
- GLC current-limiting fuse characteristic.
- Designed for potential transformer and medium voltage auxiliary circuit protection.
Potential transformers reduce medium voltage signals to safe and measurable levels for metering, monitoring and protective equipment. A correctly selected fuse helps protect the transformer and associated circuitry by disconnecting excessive fault currents before serious damage can occur.
The Mersen H220025 combines a low 3.15 A current rating with a 15.5 kV voltage rating, making it suitable for compatible potential transformer circuits. Its compact cylindrical construction supports installation within purpose-designed fuse holders and medium voltage switchgear assemblies.
Typical Applications
- Medium voltage potential transformers.
- Voltage transformer protection circuits.
- Instrument transformer installations.
- Medium voltage metering equipment.
- Industrial switchgear and distribution systems.
- Maintenance and replacement fuse applications.
