Why Choose the Mersen P300186 Protistor® High-Speed Fuse?
The Mersen P300186 is a high-performance Protistor® square body semiconductor fuse engineered to provide ultra-fast protection for sensitive power semiconductor devices. Designed for demanding industrial applications, it safeguards diodes, thyristors, IGBTs and other power electronic components from damaging overcurrent conditions while helping minimise equipment downtime.
As part of the renowned Mersen Protistor® Size 32 series, the P300186 combines high breaking capacity with low let-through energy, making it an ideal choice for variable speed drives, UPS systems, power converters and industrial automation equipment. Silver-plated contacts and a precision-engineered ceramic body ensure dependable long-term performance in demanding electrical environments.
Rated at 400 A with a 690 V AC IEC / 700 V AC UL voltage rating, the P300186 features DIN 110 blade terminals with an integrated striker indicator for reliable installation and maintenance within industrial power distribution and semiconductor protection systems.
Key Advantages
- Ultra-fast aR semiconductor protection fuse.
- 400 A current rating for demanding industrial applications.
- 690 V AC IEC / 700 V AC UL voltage rating.
- Protects IGBTs, thyristors, diodes and other semiconductor devices.
- High interrupting capacity for improved electrical safety.
- Integrated striker indicator simplifies maintenance and fuse monitoring.
Key Features
- Mersen Protistor® Size 32 series.
- Model: PC32UD69V400D1A.
- 400 A rated current.
- 690 V AC IEC / 700 V AC UL operating voltage.
- aR ultra-fast semiconductor protection characteristic.
- DIN 110 blade terminals.
- Integrated striker indicator.
- Silver-plated contacts with ceramic square body construction.
Reliable Protection for Power Electronics
High-speed semiconductor fuses are specifically designed to interrupt fault currents before they can damage expensive power electronic components. The Mersen Protistor® range offers exceptionally low I²t values and rapid fault clearance, helping extend equipment life while reducing repair costs and production downtime.
The P300186 is widely specified by OEMs and industrial engineers for applications requiring dependable protection of variable speed drives, rectifiers, inverters and power conversion equipment operating in demanding electrical environments.
Typical Applications
- Variable speed drives (VSDs).
- Industrial power converters.
- Uninterruptible power supplies (UPS).
- Soft starters and motor drives.
- Rectifiers and inverters.
- Industrial automation and power distribution systems.
