Abb`s airswitch switch-disconnectors are suitable for use in metal-enclosed switchboards [rotary version]. They are used in secondary distribution substations for supplying lines, transformers and ring networks. They can be combined with din standards fuses for transformer protection. Various models are as follows:
1 the compact switch-disconnector reliably switches all loads occurring in practice.
2 switch disconnector type nal and switch fuse combination type nalf for 12, 17.5 and 24 kv and 400, 630 and 1250 a, used in switch cubicles and css, modular systems.
3 the switch disconnector system nal/nalf is based on a modular principle. The basic unit consists of a frame with insulators and current carrying parts.
