Siemens Sentron™ SITOR 3NC8431-0C Low Voltage HRC Semi-Conductor Fuse Link With Front Indicator, 350 A, 690 VAC, 250 VDC, 100 kA Interrupt, Class: gR

Siemens Sentron™ SITOR HRC Semi-Conductor Fuse Link, Low Voltage, Series: 3NC, Indicating, 350 A, 690 VAC, 250 VDC, 100 kA Interrupt, Class: gR, 100 kA Short Circuit Current, Slotted Blade Terminal, Surface Mount, NH3 Body Size

SITOR semiconductor fuses protect power semiconductors from the effects of short-circuits because the super quick-response disconnect characteristic is far quicker than with conventional LV HRC fuses. They protect high quality devices and system components, such as converters with fuses in the input and the DC link, UPS systems and soft starters for motors. Panel mounting requirements have given rise to various connection versions and designs. The fuses with blade contacts comply with IEC 60269-2 and are suitable for installation in 3NH LV HRC fuse bases, in LV HRC fuse switch disconnectors and switch disconnectors with fuses. They also include fuses with slotted blade contacts for screw fixing with 110 mm mounting dimension, whose sizes are according to IEC 60269-4. Fuses with slotted blade contacts for screw fixing with 80 mm or 110 mm mounting dimension are often screwed directly onto busbars for optimum heat dissipation. Even better heat transmission is provided by the compact fuses with M10 or M12 female thread, which are also mounted directly onto busbars. Bolt-on links with 80 mm mounting dimension are another panel mounting version for direct busbar mounting. The fuses for SITOR thyristor sets, railway rectifiers or electrolysis systems were developed specially for these applications. The new size 3 type ranges have a round ceramic body instead of a square one. These series are characterized by small I2t values with low power dissipation and high capability under alternating load. The dimensions and functional values correspond to the current standards IEC 60269-4/EN 60269-4.