Why Choose the Mersen G300409 Protistor® High Speed Fuse?
The Mersen G300409 is a genuine Protistor® Size 32 aR high speed semiconductor fuse engineered to provide maximum protection for modern power electronic equipment. Designed for demanding industrial applications, this square body fuse delivers ultra-fast fault interruption to safeguard sensitive semiconductor devices including IGBTs, thyristors and diodes from damaging short-circuit conditions.
Featuring a 1250 A current rating with a 550 V AC IEC / 600 V AC UL voltage rating, the G300409 is ideal for high-power drives, industrial inverters, UPS systems and heavy-duty power conversion equipment. Its aR ultra-fast operating characteristic helps minimise let-through energy, reducing equipment damage and improving system reliability.
Supplied under manufacturer part number G300409 and catalogue number PC32UD55V1250A, this fuse features DIN 80 blade terminals with an integrated striker for convenient status indication and maintenance. Silver-plated contact surfaces and a high breaking capacity make it suitable for demanding industrial environments.
Key Advantages
- Genuine Mersen Protistor® high speed semiconductor fuse.
- 1250 A current rating for high-power industrial applications.
- 550 V AC IEC / 600 V AC UL rated operation.
- Ultra-fast aR characteristic for semiconductor protection.
- DIN 80 blade terminals with integrated striker.
- Designed to minimise equipment damage and reduce unplanned downtime.
Key Features
- Mersen Protistor® Size 32 series.
- Model G300409.
- Catalogue number PC32UD55V1250A.
- 1250 A rated current.
- 550 V AC IEC / 600 V AC UL.
- Square body fuse with DIN 80 blade terminals.
- Integrated striker indication.
- Silver-plated contacts for dependable long-term performance.
Reliable Protection for High-Power Electronics
High speed semiconductor fuses are specifically designed to protect sensitive electronic power devices requiring extremely rapid fault interruption. Their low let-through energy helps safeguard expensive semiconductor assemblies while maintaining reliable system operation and reducing maintenance costs.
The Mersen Protistor® range is widely specified for industrial automation, motor drives, renewable energy systems, UPS equipment and power conversion applications where dependable semiconductor protection is essential.
Typical Applications
- Variable frequency drives (VFDs).
- Industrial inverters.
- High-power UPS systems.
- Motor drives and soft starters.
- Renewable energy converters.
- Industrial power conversion equipment.
