Technical data
12.10 Motor Protection
3VL molded-case circuit breakers
176 System Manual, 03/2009, 110 0110 - 02 DS 01
Circuit breakers for motor protection with adjustable trip class ETU 40M
Characteristic curve of circuit breakers for
motor protection with adjustable trip class
ETU40M
These circuit breakers possess an
adjustable overload and short-circuit release
and an adjustable trip class. They are
current-limiting and have a phase failure
sensitivity feature. They are also equipped
with an LCD display for indicating the
current and for parameterization.
Communication via Profibus is possible.
Table 12- 40 Circuit breakers for motor protection with adjustable trip class ETU40M
Max. rated power of the
motor at 50 Hz AC
[kW]
Circuit
breaker
Rated
current I
n
[A]
380 / 415 V 500 V
Adjustable range
of the overload
protection I
R
[A]
Adjustable
range of the
short-circuit
protection I
I
[A]
Trip class TC
[s]
63 30 37 25-63 1.25-11 x I
n
5/10/15/20/30
100 37, 45 55 40-100 1.25-11 x I
n
5/10/15/20/30
VL160
160 55, 75 75, 90 63-160 1.25-11 x I
n
5/10/15/20/30
200 90, 110 110, 132 80-200 1.25-11 x I
n
5/10/15/20/30 VL250
250 132 160 100-250 1.25-11 x I
n
5/10/15/20/30
315 160 200 126-315 1.25-11 x I
n
5/10/15/20/30 VL400
315 200 250 126-315 1.25-11 x I
n
5/10/15/20/30
VL630 500 250 355 200-500 1.25-12.5 x I
n
5/10/15/20/30
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