DNH7(HR18)-400/3 Low Voltage NH(NT) disconnector for AC isolator
Dnh7 series fuse-type disconnector, with ABB-XLP similar structure,
the rated insulation voltage AC 800v, rated working voltage 690v,
400v, rated frequency 50hz, rated working current 160 ~ 630a.
Mainly used for high short circuit in the current distribution
circuit and the motor circuit, used as power switch, disconnector
and emergency switch, and for circuit protection purposes, the
switch is not directly open and close a single motor.
Model: DNH7, rated voltage: 690V, rated current: 160-630A, peak
withstand current: 1000A
DNH7 series switch has a compact structure, light weight, reliable
operation, safe, easy installation, beautiful appearance, etc.
Isolation switch use of the environment: isolation switch in the
following conditions can work reliably ◎ altitude of not more than
200 meters m
◎ ambient temperature is not higher than 40 ℃, not less than -5 ℃;
◎ relative humidity of not more than 95%;
◎ explosion-free hazardous media Note: If the ambient air
temperature is expected to be higher than 40 ℃ or below -5 ℃ ~ -45
℃ under the conditions, the user should explain to the
If you would like to know more about DNH7 (HR18) fuse type
disconnectors, please contact us for instructions such as
instructions, prices and maintenance.
|Rated operational voltage Ue V||400||400||400|
|Rated operational current Ie A||125||250||400|
|Thermal current w/fuse link Ith A||160||250||400|
|Rated making and breaking capacity||AC21B||AC21B||AC21B|
|Rated frequency Hz||50/60||50/60||50/60|
|Power loss at Im without fuse-link/phase W||12W||23W||34W|