Fuse Switch Disconnector with circuit-breaker fuse monitoring NLS
- Fuse switch disconnectors NLS consist of two main components, the disconnector base with a lower contact protection with spring pressure contact and removable hinged lid, on which a circuit breaker is integrated for fuse monitoring:
- The circuit breaker has three main circuits for the three phases which have 1S, spring contact 13-14 and 1NC, spring contact 21-22. These are guided out from the touch-proof contact protection on the bottom of the disconnector base. When a fuse trips thereby initiating a bimetal trip. Its intrinsic resistance has no effect on the characteristic of that fuse.
- When a defective fuse trips the circuit breaker must manually be switched on again.
- The circuit breaker is encapsulated under a plastic cover making it touch-proof.
- The voltage range of the circuit breaker goes up to AC 690V or to DC 150V, maximum current of auxiliary contacts being 10A.
- A fuse monitoring is not permissible in circuits with electric energy converter, where in the case of a failure, a power feedback with a voltage of above 300V DC may occur.
NLS 00
Fuse switch disconnectors with circuit breaker fuse monitoring NLS 00
NLS 1
Fuse switch disconnectors with circuit breaker fuse monitoring NLS 1
NLS 2
Fuse switch disconnectors with circuit breaker fuse monitoring NLS 2
NLS 3
Fuse switch disconnectors with circuit breaker fuse monitoring NLS 3
