Why Choose the Mersen S221437 Protistor® High-Speed Fuse?
The Mersen S221437 is a Protistor® high-speed cylindrical semiconductor fuse designed to provide full-range protection for sensitive power semiconductor devices. Manufactured as the FR27GB80V10T, this fuse forms part of Mersen's 27 × 60 mm gR (gRB) 800 VAC series, offering rapid fault interruption for converters, drives, UPS systems and other industrial power electronic equipment.
The gR operating class provides both overload and short-circuit protection for semiconductor devices, helping to safeguard expensive components such as IGBTs, thyristors, SCRs and diodes. The fuse incorporates a built-in trip indicator (striker) to simplify maintenance and fault identification.
With a 10 A current rating, 800 V AC IEC voltage rating and compact 27 × 60 mm cylindrical body, the S221437 is ideal for protecting modern power conversion equipment where fast, dependable semiconductor protection is essential.
Key Advantages
- High-speed gR semiconductor fuse providing full-range protection.
- 10 A rated current for precision semiconductor protection.
- 800 V AC IEC voltage rating.
- Integrated trip indicator (striker).
- Excellent current-limiting performance.
- Designed for demanding industrial power electronic applications.
Key Features
- Mersen Protistor® 27 × 60 mm gR series.
- Model: S221437.
- Catalogue number: FR27GB80V10T.
- 10 A rated current.
- 800 V AC IEC rated voltage.
- 27 × 60 mm cylindrical body.
- gR (gRB) operating characteristic.
- Integrated striker indicator.
- RoHS compliant.
Reliable Protection for Power Semiconductor Equipment
The Mersen Protistor® range has been developed specifically for the protection of semiconductor devices operating in high-performance industrial applications. Fast current limitation minimises thermal stress during fault conditions, helping to extend equipment life while reducing maintenance costs.
The S221437 is suitable for industrial equipment requiring full-range semiconductor protection, including variable speed drives, inverters, converters and UPS installations. Its integrated striker simplifies fuse monitoring and maintenance.
Typical Applications
- Variable frequency drives.
- Industrial inverters.
- Power converters.
- UPS systems.
- Semiconductor rectifiers.
- Industrial automation equipment.
