HUW1
Series Intelligent Universal Circuit Breaker
2
humidity in the wettest month is 90%, the average minimum temperature in this month is +20°C. Measures shall be
taken to deal with the occasional condensation due to temperature changes.
d) The contamination grade is Grade 3.
e) The installation category of the main circuit of the circuit breaker is IV. When the rated working voltage of the
main circuit is not greater than AC 400 V, the installation categories of the control circuit and the auxiliary circuit are III
except that the undervoltage release coil and the primary coil of the power transformer of the intelligent controller are
the same as the circuit breaker. When the rated working voltage of the main circuit is AC 400 V to AC 690 V, the
control circuit and the auxiliary circuit need to be isolated from the main circuit by the transformer; the highest working
voltage of the control circuit and the auxiliary circuit is AC 400 V; and the installation categories of the control circuit
and the auxiliary circuit are both III.
f
)
The circuit breaker is suitable for electromagnetic environment A.
3.2
Normal installation conditions
a) Installation of the circuit breaker: Place the circuit breaker in the distribution cabinet and fasten it with four M8
(1,000 A shell frame) or M10 (2,000 A above shell frame) bolts and gaskets. The circuit breaker shall be installed
smoothly without additional mechanical stress, so as to avoid damage to the circuit breaker or poor contact of the
main busbar.
b) The circuit breaker shall be installed in places where there is no explosion hazard, conductive dust, metal
corrosion, or insulation damage.
c) The protection level is IP20. When the circuit breaker is installed in the cabinet and the door frame is installed,
the protection level can reach IP40.
3.3
Normal storage and transportation conditions
a) The lower temperature limit shall not be less than -25°C, and the upper temperature limit shall not be more
than +55°C (while for HUW1F and HUW1PVA, the lower temperature limit shall not be less than -50°C, and the upper
temperature limit shall not be more than +85°C). The relative humidity (at 25°C) shall not exceed 95%.
b) The product shall be handled with care during transportation, and shall not be turned upside down and rolled
to avoid violent collision.
4
Product Structure and Working State
4.1
Product structure
Drawer seat
Face shield
Reset button
Intelligent controller
Opening button
Switching indicator
Left handle
Crank operating hole
Two-position indicator
Crank
Safety baffle
Left guide rail
Secondary
connector
(Drawer)
Adjusting frame
Right guide rail
Arc-extinguishing chamber
Secondary connector
Auxiliary switch
Shunt strip
Closed electromagnet
Electric operating mechanism
Operating mechanism
Secondary connector
Key lock position
Energy storage handle
Close button
Energy storage indication
Label
Right handle
Padlock clamp plate
Three-position lock
Drawer Mode Circuit Breaker
(Example: 2,000)
Drawer Seat
(Example: 2,000)
Body Removal Face Shield
(Example: 2,000)
