A-039
HYW3
Series Intelligent Universal Circuit Breaker
A
Primary power distribution
Undervoltage release
When the undervoltage release is not powered, the circuit breaker cannot be closed. The
Undervoltage Release of 2,500 A Shell Frame and Above are divided into two types: Suction-
assisted type (without delay function) and self-suction type.
Working voltage Ue
AC230V
AC400V
Opening voltage range
（
35~70)%Ue
Reliable closing voltage range
（
85~110)%Ue
Voltage range in which the circuit
breaker cannot be closed
≤35%Ue
Power consumption
20VA
Delay tripping time
Instantaneous, 0.5 s, 1 s, 3 s, 5 s
Note 1:
Within 1/2 delay tripping time, when the working voltage returns to more than 85%Ue, the
circuit breaker will not be opened.
Note 2: In lightning-prone areas and power grid with unstable power supply voltage, the
undervoltage release with time delay is recommended to prevent the circuit breaker from breaking
due to short-term voltage drop.
Note 3: The undervoltage delay tripping time and zero voltage delay tripping time can be up to 10
s and 5 s, respectively (It shall be negotiated with the manufacturer when ordering).
Phase spacer plate
It is vertically installed between the busbars of each phase of the circuit breaker, which is used to
enhance the phase-to-phase insulation capability of the circuit breaker.
Energy storage motor
It is used to realize the electrical energy storage of the circuit breaker and automatic energy
storage again after the circuit breaker is closed, so that the circuit breaker can be closed again
immediately after the interruption.
Working voltage Us
AC230V
AC400V
DC220V
DC110V
Working voltage range
（
85~110)%Us
Energy storage time
≤ 7 s (cycle period: ≤ 1 time/min)
HYW3-1600 power consumption
75VA
75W
HYW3-2500 power consumption
85VA
85W
HYW3-4000 power consumption
110VA
110W
Note: The manual energy storage operation can also be performed during the maintenance of the
circuit breaker.
Undervoltage Release of
1,600A Frame
Undervoltage Release
of 2,500A Frame and
Above
Phase Spacer Plate
Energy Storage Motor
of 2,500 A Shell
Frame and Above
Energy Storage Motor of
1,600 A Shell Frame
