HUW1
Series Intelligent Universal Circuit Breaker
43
Attention: The conductor part with insulation removed cannot be exposed outside the secondary circuit to prevent the
risk of electric shock.
Busbar wiring method
● In order not to affect the normal use of the circuit breaker, it is recommended to use T2 copper busbar for the
user's main circuit wiring busbar. See Table "Rated Current of Circuit Breaker Corresponding to the
Cross-sectional Area of External Conductor" for busbar specifications.
● Grade required for the bolt:
≥
8.8.
● Too much or too little torque of bolt tightening is not allowed. If the torque is too large, the bolt will slip easily,
which will not play the role of fastening; if the torque is too small, it is easy to cause poor contact between the
circuit breaker terminal and the user's busbar; they will cause excessive temperature rise. The torque of bolt
M10 is 42 N.m; the torque of bolt M12 is 50 N.m.
● After the circuit breaker is installed, the electric gap between different electrified bodies as well as between
electrified bodies and other metal parts shall not be less than 20 mm.
Busbar wiring mode of below 1,600 A
Horizontal wiring mode of 1,600 A and above
11
Functions and Characteristics of Accessories
1,000 A Shell Frame Closed
Electromagnet
2,000A (and above) Shell Frame
Closed Electromagnet
1,000 A Shell Frame Shunt Strip
2,000A (and above) Shell Frame
Shunt Strip
Phase spacer plate
■
Closed electromagnet
When the circuit breaker completes the energy storage operation and is in the normal
opening state, the circuit breaker can be quickly closed by remote control of the
closing electromagnet.
Working voltage Us
AC 230 V
AC 400 V
DC 220 V
DC 110 V
Action voltage range
(85
–110) %Us
Starting current
1.3 A
0.7 A
1.3 A
2.5 A
Pick-up time
≤60 ms
Instantaneous power
consumption
300 VA
300 W
■
Shunt Strip
When the circuit breaker is in the closing state, the circuit breaker can be quickly
disconnected by the remote control of shunt strip.
Working voltage Us
AC 230 V
AC 400 V
DC 220 V
DC 110 V
Action voltage range
(70
–110) %Us
Starting current
1.3 A
0.7 A
1.3 A
2.5 A
Pick-up time
≤30 ms
Instantaneous power
consumption
300 VA
300 W
■
Phase spacer plate
It is vertically installed between the busbars of each phase of the circuit breaker, which
is used to enhance the insulation ability between phases of the circuit breaker.
