| Brand | Switchgear parts |
| Model NO. | 3 Phase Fused Disconnect Switch |
| Rated normal current | 630A |
| Rated frequency | 50/60Hz |
| number of poles | 3P |
| Series | DNH1 |
This type of fused electrical switch is a 3 phase fused disconnect switch, model DNH1G. It is used together with NH series fuses, so it is commonly called nh fuse switch disconnector, and it can also be called blade fuse switch with an isolation knife.
This fuse switch produced by GRL has a unique appearance, different current specifications, and different materials. The main material of the shell is PA66 resistance V0, PC, DMC, composition. The copper parts are made of red copper.
Structure Characteritic:
The switch is composed of base、cover and arc chute, all these parts are made of arc-resisting plastics, it is whole plastic structure.The static contact is directly installed on thebase, the arc chute is rasily mounted and dismounted, each arc chute has two parts: inner room and outer room, it adopts multi-pieces of metal arc-blowout grid which increase the arc-blowout capacity and prolong the service life of the contact. NT type fusing unit is fixed inside the cover, the cover can be rotated along the supporting unit in fan shape, it has a relative big electric isolation distance which can meet the demands of the isolating seitch; The cover can be dismounted from the base easily
chich make the installation and replacement of the fusing unit easy There are three group of installation hote on the base, which and meet the installation requirements of various switchgear cubicle and panel. Auxiliary contact can be mounted at the two side of the switch on demands, it can give out the signal of opening and closing the switch.
Product parameters:DNH1-160/30G
| Structure description | Match fuse size | Mounting method | Product model | Item No. |
| Normal type | 00 | Fixed type | DNH1-160/30G | DN31001 |
| With 1NO+ 1NC auxiliary contactor | 00 | Fixed type | DNH1-160/30G | DN31011 |
Parameter Description
| With fuse | Rated voltage | Ue | V | AC380 | AC660 |
| Rated current | Ie | A | 160 | 100 | |
| Conventional thermal current | Ith | A | 160 | 100 | |
| Rated short-time withstand current | kA | 100 | 50 | ||
| Rated insulation voltage | Ui | V | 800 | ||
| Rated impulse withstand voltage | Uimp | kV | 8 | ||
| Utilization category | AC-23B | ||||
| AC-22B | |||||
| AC-21B | |||||
| AC-20B | |||||
| Electric endurance times | Times | 200 | |||
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