Why Choose the Mersen H301077 Protistor® High-Speed Fuse?
The Mersen H301077 is a high performance Protistor® square body high-speed semiconductor fuse engineered to provide exceptional protection for power semiconductor devices used in industrial power conversion systems. Designed for rapid fault interruption, it helps protect sensitive components such as IGBTs, thyristors, diodes and rectifiers from damaging short-circuit currents.
As part of the trusted Mersen Protistor® Size 33 aR series, the H301077 delivers high interrupting performance and low let-through energy, making it ideal for demanding industrial applications including variable speed drives, UPS systems, converters and other power electronic equipment. The fuse incorporates a striker mechanism and long slotted blade terminals for straightforward installation into compatible fuse holders.
With a 1800 A current rating and 600 V AC IEC / 650 V AC UL voltage rating, the H301077 provides dependable semiconductor protection while helping minimise equipment damage and production downtime in critical industrial environments.
Key Advantages
- High-speed aR semiconductor protection fuse.
- 1800 A current rating for high power applications.
- 600 V AC IEC / 650 V AC UL rated.
- Protects IGBTs, thyristors, diodes and semiconductor devices.
- Low I²t limits damage during fault conditions.
- Long slotted blade terminals with integrated striker for reliable installation.
Key Features
- Mersen Protistor® Size 33 square body fuse.
- aR ultra-fast semiconductor protection characteristic.
- 1800 A rated current.
- 600 V AC IEC / 650 V AC UL voltage rating.
- Square ceramic body construction.
- Integrated striker indicator.
- Silver-plated contact surfaces.
- Long slotted blade terminals.
Reliable Protection for Power Electronics
High-speed semiconductor fuses are specifically designed to interrupt extremely high fault currents before they can damage expensive power electronic devices. Their ultra-fast operation and low let-through energy make them an essential component in converters, inverters, soft starters and industrial drive systems.
The Mersen Protistor® range is trusted worldwide by OEMs and electrical engineers for protecting modern semiconductor equipment operating in demanding industrial environments.
Typical Applications
- Variable frequency drives (VFDs).
- Power converters and inverters.
- UPS systems.
- Motor drives.
- Industrial power supplies.
- Semiconductor protection in OEM equipment.
