Fuse switch disconnector is a device which is used to make the circuit, carry rated current, and break the circuit. When the current exceeds the rated current or short current occured,The fuse link will break immediately ,in that way fuse switch protect the working components.
Normally, the fuse switch rated voltage is AC415V/690V, ampere up to 630A.
What are the sizes of fuse switch disconnector ?
Fuse switch disconnector there are horizontal type and vertical type. We named horizonal type fuse switch as fuse- switch -disconnector directly.
There are size 00 160A fuse switch ,Size 1 250A fuse switch ,size 2 400A fuse switch and size 3 630A fuse switch.
250A 3 phase fuse switch disconnector is one of the most popular size widely applicated in various low voltage distribution panels and capacitor panels.
250A Phase fuse switch disconnector switch pramaters.
Order No.Description
| Structure Description | Suitable Fuse | Installation | Type No. | Order No. |
| Top outgoing system | 1 | Hanging | DNH1-250/31G | DN31131 |
| Top outgoing system,1set 1NO+1NCauxillary contact | 1 | Hanging | DNH1-250/31G | DN31141 |
| Top outgoing system2sets 1NO+1NCauxiliary DNH1-250/31Gcontact | 1 | Hanging | DNH1-250/31G | DN31151 |
| Bottom outgoing system | 1 | Hanging | DNH1-250/31G | DN31161 |
| Bottom outgoing system,1set 1NO+1NC.auxiliarv contact | 1 | Hanging | DNH1-250/31G | DN31171 |
| Bottom outgoing system,2sets 1NO+1NC,auxiliary contact | 1 | Hanging | DNH1-250/31G | DN31181 |
Parameter
| WithFuse | Rated operational voitage | Ue | V | AC380 | AC660 |
| Rated operational current | le | A | 250 | 200 | |
| Conventional thermalcurrent | Ith | A | 250 | 200 | |
| Rated conditional short-circuit current | kA | 100 | 50 | ||
| Rated insulation voltage | Ui | V | 800 | ||
| Rated impulse withstand voitage | Uimp | kV | 8 | ||
| Utilization category | AC-23B | ||||
| AC-22B | |||||
| AC-21B | |||||
| AC-20B | |||||
| Electrical endurance times | Times | 200 | |||
Whats the difference between Busbar mounted type fuse switch and Fixed mounted type fuse switch?
GRL latest design DNH1 fuse switch,each size have both busbar mounted type and fixed mounted type. Take 250A fuse switch as an example.Busbar mounted type model no. is DNH1-250/31G, and fixed mounted type model no. Is DNH1-250/30G.
Compared with fixed type switch, Busbar type switch there is a installation board in the switch back.It is special for installation,no need to drilling installation holes on the busbar,just hang the switch on the busbar and fastern that is enough. When install the fixed type switch,we should drilling holes on the busbar in advance,then use bolt fix the switch on the busbar.
Bubar type fuse switch’s installation is more convenient.
Click to view grl DNH7-160 product>>
Do you provide 250A busbar system fuse switch solutions?
GRL is not only a a fuse switch and fuse link manufacturer, we also provided various fuse switch busbar system solutions.
leave your question
Get your Comfortable Solution
GRL Electric Co., Ltd. is one of the leading companies in the Middle And High End market of low-voltage electric in China
Need Help With Finding The Right Technical Solution?
