HUW1
Series Intelligent Universal Circuit Breaker
22
7
Wiring Diagrams of the Circuit Breaker Control Circuit
7.1
Wiring diagram of the control circuit of the
HUW1-1000 Circuit Breaker
1) The circuit on the dotted line is wired by the user, which cannot be performed when the optional accessories
are not customized.
2) The accessories such as intelligent controller, undervoltage release, shunt strip, closing electromagnet and
electric operating mechanism shall be connected to different power sources respectively when the voltages are
different.
3) Undervoltage release can be directly connected to the power supply of the main circuit, with the highest
working voltage not exceeding its rated working voltage; when the working voltage of the main circuit exceeds its
rated working voltage, it needs to be isolated from the main circuit by a transformer.
4) The three-position indication function of the drawer seat is only optional for the drawer mode
circuit breaker.
Wiring diagram of the secondary circuit of the HUW1-1000 L3/L4, 2M Intelligent Controller
Terminal functions in the wiring diagram of the secondary circuit of HUW1-1000 L3/L4, 2M Intelligent Controller
Terminal number
Function description
Notes
1, 2
Auxiliary power input: AC 230 V, AC 400 V, DC 220 V, DC 110 V
Power module is
required for DC power
3, 4, 5
Fault trip auxiliary contact, contact capacity: AC 250 V, 3 A
8, 9
External transformer
Optional accessories
20, 21
Undervoltage release
Optional accessories
22, 23
Shunt strip
Optional accessories
24, 25
Closed electromagnet
26, 27, 28
Electric operating mechanism, 28 connected to the green line, 27 connected to the red line and
26 connected to the black line
29-40
DF auxiliary switch
Interpretation of symbols in the wiring diagram
HUW1: HUW1-1000 Universal Circuit Breaker
S1
– S4: Signal lamp (user-provided) TA: Current transformer
SAL: Microswitch SB1: Opening button (user-provided) SB2: Close button (user-provided) X: Closed electromagnet F: Shunt strip
Q: Undervoltage release (optional) M: Electric operating mechanism SA: Limit switch L (+), N (-): Control power supply (DC: L is
positive; N is negative) A, B, C, N: Main circuit phase line DF: Auxiliary switch
Main circuit
Intelligent controller
Undervoltage
release
Shunt strip
Closed
electromagnet
Electric
operating
mechanism
Auxiliary switch
To the main
circuit
Energy storage
indication
Opening
indication
Closing
indication
Malfunction
indication
A, B, C, N
