NT knife-blade fuse link is a disposable protective device. The fuse element melts to cut off the circuit, protecting cables, motors, transformers and other electrical equipment when overload or short-circuit happened.

NT00 is From 10A to 160A ;NT0 is up to 160A;NT1 is up to 250A;NT2 is up to to 400A ;NT3 is up to 630A;And NT4 is up to1250A .

NT0,NT1 , NT2 ,NT3 ,NT4 Each size is progressively larger. Each size has its own dedicated base; fuse links cannot be cross-sized installed. NT4 is the largest size for high-power main incoming circuits.

All NT000, NT00,NT0,NT1 ,NT2 ,NT3 ,NT4 will use good material as below:

• Contacts are made of high-performance red copper or alloy, ensuring good conductivity, wear and corrosion resistance. Captive spring mechanisms maintain consistent contact pressure during thermal cycling, eliminating resistance drift.
• Base Housing Crafted from high-temperature resistant nylon, offering good mechanical strength, moisture resistance, and flame-retardant (self-extinguishing) properties, withstanding physical impacts, vibrations, and harsh operating conditions.
  Improved Heat Dissipation: Open-type structure enhances heat dissipation, reducing temperature rise for reliable operation under high-current loads.