The NT2 fuse acts like an 'airbag' for the electrical system. When the current abnormally increases, its internal special alloy quickly melts and cuts off the circuit. Its core functions are threefold:
- Overload protection: Delayed action under continuous overload
- Short circuit protection: Response within 0.1 seconds to sudden high current surges
- Fault isolation: Creates a clear disconnection point after melting
This fuse is designed with industrial voltage requirements in mind:
- Rated voltage covers 380V, insulation strength meets standards
- Breaking capacity reaches 10kA, capable of handling industrial short-circuit impacts
- Note: Three-phase balanced configuration is required; independent installation of each phase is recommended.
- Derating is necessary in high-temperature environments; a 20% margin is recommended.
