HUW1
Series Intelligent Universal Circuit Breaker
26
Terminal functions in the wiring diagram of the secondary circuit of the HUW1-2000 (and above) 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
3, 4, 5
Fault trip auxiliary contact, contact capacity: AC 250 V, 3 A
6, 7
Circuit breaker status auxiliary contact (normally closed), contact capacity: AC 250 V, 3 A
8, 9
Circuit breaker status auxiliary contact (normally open), contact capacity: AC 250 V, 3 A
20
Grounding (PE)
21, 22, 23, 24
Voltage signal measurement: 21 connected to N, 22 connected to A, 23 connected to B, 24
connected to C
Optional functions
25, 26
External transformer input (leakage and neutral transformer)
Optional functions
27, 28
Undervoltage release
Optional accessories
29, 30
Shunt strip
31, 32
Closed electromagnet
33, 34, 35
Electric operating mechanism, 35 connected to the green line, 34 connected to the black line and
33 connected to the red line
36
–…
DF1 auxiliary switch terminal
Terminal functions in the wiring diagram of secondary circuit of HUW1-2000 (and above) 3M/3H and Reclosing Intelligent
Controller
Terminal number
Function description
Notes
1, 2
Auxiliary power input: AC 230 V, AC 400 V, DC 220 V, DC 110 V
3, 4, 5
Fault trip auxiliary contact, contact capacity: AC 250 V, 3 A
6, 7
Circuit breaker status auxiliary contact (normally closed), contact capacity: AC 250 V, 3 A
8, 9
Circuit breaker status auxiliary contact (normally open), contact capacity: AC 250 V, 3 A
10, 11
Communication interface output, 10 connected to A,11 connected to B
Default Modbus
12
–19
Signal output; 12 and 13: DO1; 14 and 15: DO2; 16 and 17: DO3; 18 and 19: DO4
Set based on functional
requirements
20
Grounding (PE)
21, 22, 23, 24
Voltage signal measurement: 21 connected to N, 22 connected to A, 23 connected to B, 24
connected to C
25, 26
External transformer input
27, 28
Undervoltage release
Optional accessories
29, 30
Shunt strip
31, 32
Closed electromagnet
33, 34, 35
Electric operating mechanism, 35 connected to the green line, 34 connected to the black line and
33 connected to the red line
36
–…
DF1 auxiliary switch terminal
Interpretation of symbols in the wiring diagram
Symbols
Interpretation
Notes
Symbols
Interpretation
Notes
HUW1
HUW1 Universal Circuit
Breaker
PE
Grounding wire
S1
–S7
Signal lamp
User-provided
L (+), N (-)
Control power supply (DC: L is
positive; N is negative)
TA
Current transformer
A, B, C, N
Main circuit phase line
SAL
Microswitch
DF1
Auxiliary switch
Type optional
SB1
Opening button
User-provided
DF2
Drawer-type three-position electric
indicator switch
Optional
accessories
SB2
Close button
User-provided
ST power
module
DC 24 V power supply is provided
Optional
accessories
X
Closed electromagnet
ST201
Relay module
Optional
accessories
F
Shunt strip
Protocol
converter
Except Modbus protocol, other
protocols need to be configured
Optional
accessories
Q
Undervoltage release
Optional
accessories
M
Electric operating mechanism
SA
Electric operating mechanism
limit switch