HUW1
Series Intelligent Universal Circuit Breaker
24
Wiring diagram of the secondary circuit of the HUW1-1000 Reclosing Intelligent Controller
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 Protocol converter: Other protocols except Modbus-RTU protocol need to
be configured
SB3: Anti-reopening button (for reclosing maintenance) SB4: Anti-reclosing button (for reclosing maintenance)
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
To the incoming side
of circuit breaker
Modbus protocol
Computer
Switchboard
Concentrator
Others
Protocol
converter
Green
Red
A, B, C, N