Why Choose the Mersen P300117 Protistor® High-Speed Fuse?
The Mersen P300117 is a Protistor® Size 30 aR high-speed square body fuse designed to provide maximum protection for semiconductor devices used in modern power conversion equipment. Manufactured by Mersen, this fuse features a 400A current rating, 690VAC IEC / 700VAC UL voltage rating and DIN 80 blade terminals with an integrated striker, making it ideal for demanding industrial applications.
Engineered specifically for the protection of diodes, thyristors, IGBTs and MOSFETs, the P300117 combines low let-through energy (I²t), high interrupting capacity and ultra-fast fault clearing to minimise damage during short-circuit conditions. It is widely used in variable speed drives, UPS systems, industrial inverters, converters and other power electronic equipment.
Protistor® semiconductor fuses are manufactured using die-cut silver elements embedded in solidified silica sand, providing controlled arc extinction, excellent reliability and consistent performance under demanding industrial operating conditions. Silver-plated contact surfaces and non-magnetic hardware further enhance long-term reliability.
Key Advantages
- Ultra-fast aR semiconductor protection.
- 400A current rating.
- 690VAC IEC / 700VAC UL voltage rating.
- Protistor® Size 30 square body design.
- DIN 80 blade terminals with integrated striker.
- Excellent protection for IGBT, MOSFET, diode and thyristor devices.
- Low I²t reduces semiconductor damage during fault conditions.
- Manufactured by Mersen for demanding industrial applications.
Key Features
- Manufacturer: Mersen.
- Item number: P300117.
- Catalogue number: PC30UD69V400A.
- Series: Protistor® Size 30.
- Fuse class: aR ultra-fast semiconductor fuse.
- Square body industrial fuse.
- DIN 80 blade mounting.
- Integrated striker indicator.
Designed for Semiconductor Protection
Unlike conventional industrial fuses, Protistor® aR semiconductor fuses are specifically engineered to protect sensitive power electronic devices. Their extremely fast operating characteristics minimise thermal and electrical stress during fault conditions, helping to extend the service life of expensive semiconductor components.
The P300117 is suitable for variable speed drives, industrial UPS systems, renewable energy converters, soft starters, industrial power supplies and other power conversion equipment where rapid semiconductor protection is essential.
Typical Applications
- Variable speed drives (VSDs).
- Industrial inverters and converters.
- UPS systems.
- Soft starters.
- Renewable energy power converters.
- Industrial power supplies.
- Motor drives.
- Semiconductor protection circuits.
