Siemens NXPLUS C User Manual

Description
74/293 Revision 11 • INSTALLATION AND OPERATING INSTRUCTIONS • NXPLUS C • 802-9081.9
Closing time The interval of time between the initiation (command) of the closing operation and the
instant when the contacts touch in all poles.
Opening time The interval of time between the initiation (command) of the opening operation and the
instant when the contacts separate in all poles.
Arcing time The interval of time from the first initiation of an arc and the instant of final arc extinction in
all poles.
Break time The interval of time between the initiation (command) of the opening operation and the
instant of final arc extinction in the last-pole-to-clear (=opening time and arcing time).
Close-open contact time The interval of time - in a make-break operating cycle - between the instant when the contacts
touch in the first pole in the closing process, and the instant when the contacts separate in all
poles in the subsequent opening process.
Motor operating
mechanism
The operating mechanisms of the 3AH55 and 3AH25 circuit-breakers are suitable for auto-
reclosing. For DC operation, the maximum power consumption is approx. 600 W. For AC
operation, the maximum power consumption is approx. 750 VA
The rated current of the line protection motor operating mechanism is shown in the following
table.
Fuse protection table: Line protection of motor operating mechanism for vacuum
circuit-breaker
Rated voltage of
operating mechanism
Operating voltage
1
Power consumption
of motor
Rated current of
operating
mechanism
Normal current Smallest possible rated
current of the
miniature circuit-
breaker
110% 80%
U
a
[V] U
max
[V] U
min
[V] P [W] S [VA] I
a_A
[A] I
max
[A] I
min
[A] I
a_S
[A]
DC 24 26 19 600 – 25.0 31.3 22.7 16
30 33 24 600 – 20.0 25.0 18.2 16
32 35 26 600 – 18.8 23.4 17.0 16
48 53 38 600 – 12.5 15.6 11.4 10
60 66 48 600 – 10.0 12.5 9.1 8
110 121 88 600 – 5.5 6.8 5.0 4
120 132 96 600 – 5.0 6.3 4.5 4
125 138 100 600 – 4.8 6.0 4.4 4
127 140 102 600 – 4.7 5.9 4.3 4
220 242 176 600 – 2.7 3.4 2.5 2
240 264 192 600 – 2.5 3.1 2.3 2
AC 100 110 80 – 750 7.5 9.4 6.8 6
110 121 88 – 750 6.8 8.5 6.2 4
120 132 96 – 750 6.3 7.8 5.7 4
125 138 100 – 750 6.0 7.5 5.5 4
230 253 184 – 750 3.3 4.1 3.0 2
240 264 192 – 750 3.1 3.9 2.8 2
1
The operating voltage may deviate from the rated voltage specified in the table by –20% to +10%.

Siemens NXPLUS C Specifications

General

Brand	Siemens
Model	NXPLUS C
Category	Circuit breakers
Language	English