Overview

FZRN21-12D/T125-31.5 indoor high-voltage vacuum load switch (combined electrical appliance), also known as ZFN21 vacuum load switch, formal installation, wall-mountable vacuum load switch, wall-mounted vacuum load switch, with fuse, with grounding knife, with It has the advantages of large breaking capacity, safety and reliability, long electrical life, frequent operation, compact structure, small size, light weight, and basically no need for maintenance. It has the function of protecting the transformer from overload and preventing the phase loss operation of the equipment. It has an obvious isolation break and can be equipped with a grounding knife and an electric spring mechanism with closing ability. The remote control performance can reach GB3048-1990 "3-63V AC high load" respectively. Switch" standard, IEC420 《AC high-voltage load switch-fuse combination appliance》international standard, and GB169-1997 "AC high-voltage load switch-fuse combination appliance" standard requirements.

Model and meaning