Siemens SENTRON 3VL series - Motor Protection

Technical data
11.7 Motor Protection
3VL IEC molded case circuit breakers
System Manual, 11/2013, 110 0110 - 02 DS 03
153
11.7
Motor Protection
The following characteristic values in the relevant tables apply for the 3VL molded case circuit
breakers in motor protection with different trip classes:
● Trip class ETU10M fixed
● Trip class ETU30M adjustable
● Trip class ETU40M adjustable
Molded case circuit breakers for motor protection with fixed trip class ETU10M
Molded case circuit breaker characteristic
curve for motor protection with
fixed trip class ETU10M
These
molded case circuit breakers possess
an adjustable overload and short
-circuit
release and a fixed trip class.
They are current
-limiting and have a phase
failure sensitivity feature Communication via
PROFIBUS
DP and Modbus RTU is possible.
Table 11- 29 Molded case circuit breakers for motor protection with fixed trip class ETU10M
Molded
case
circuit
breaker
Rated
current I
n
Max. rated power of the
motor at 50 Hz AC
Adjustable range
of the overload
protection I
R
Adjustable
range of the
short-circuit
protection I
I
Trip class TC
[A]
[kW]
[A]
[A]
[s]
380 / 415 V
500 V
VL160
63
30
37
0.41-1.0 x I
n
1.25-11 x I
n
10
100
37, 45
55
0.41-1.0 x I
n
1.25-11 x I
n
10
160
55, 75
75, 90
0.41-1.0 x I
n
1.25-11 x I
n
10
VL250
200
90, 110
110, 132
0.41-1.0 x I
n
1.25-11 x I
n
10
250
132
160
0.41-1.0 x I
n
1.25-11 x I
n
10
VL400
315
160
200
0.41-1.0 x I
n
1.25-11 x I
n
10
315
200
250
0.41-1.0 x I
n
1.25-11 x I
n
10
VL630
500
250
355
0.41-1.0 x I
n
1. 5-12.5 x I
n
10