Overview

LV HRC Design

• SITOR semiconductor fuses have a high varying load factor, which ensures a high level of operating safety and plant availability – even when subject to constant load change
• The use of SITOR semiconductor fuses in LV HRC bases or Siemens switch disconnectors has been tested with regard to heat dissipation and maximum current loading. This makes planning and dimensioning easier and prevents consequential damage
• Our high standard of quality ensures good compliance with the characteristic curve and accuracy. This ensures long-term protection of devices.

Operational classes

Fuses are categorized according to function and operational classes. SITOR semiconductor fuses, in LV HRC design, are available in the following operational classes:

• aR: for the short-circuit protection of power semiconductors (partial range protection)
• gR: for the protection of power semiconductors (full range protection)
• gS: The gS operational class combines cable and line protection with semiconductor protection (full range protection).

SILIZED Design

• SILIZED semiconductor fuses have an extremely compact design. This means they have a very small footprint – particularly the NEOZED version
• The rugged and well-known DIAZED design complies with IEC 60269-3. It is globally renowned and can be used in many countries
• A huge range of fuse bases and accessories are available for the NEOZED and DIAZED versions of the SILIZED semiconductor fuses. This increases the application options in many devices.

Cylindrical Fuse Design

• Cylindrical fuses have an extremely compact design and a correspondingly small footprint
• The cylindrical fuses have IEC and UL approval and are suitable for universal use worldwide
• The use of SITOR cylindrical fuses in the cylindrical fuse holders and bases has been tested with regard to heat dissipation and maximum current loading. This makes planning and dimensioning easier and prevents consequential damage
• The use of fuse holders as switch disconnectors expands the area of application of these devices and increases operating safety.