C-15
WEG Automation - Products and Solutions
Data is subject to change without notice.
Low Voltage Industrial Controls
The tripping characteristic shows the motor circuit breaker trip time in relation to the rated current.
The curves show average tolerance range values for an ambient temperature of 20 °C, starting in cold state. Thermal trip time
when working in operating temperature is reduced to around 25% of the presented values. Under normal operating conditions,
all 3 circuit breaker phases must be conducting.
MPW18 & MPW40
X Adjusted current Ie
se
co
nd
m
in
ut
e
3-phase
2-phase
m
ilis
ec
on
d
2h
100
60
40
20
10
6
4
2
1
40
20
10
6
4
2
1
600
400
200
100
60
40
20
10
6
4
1
1.5
2
3
4 5 6 7 8 9 10 15 20
30
Short-Circuit Current Limitation
Curve at 440 V - MPW40
Pe
ak c
ur
re
nt (
kA
)
Prospective short-circuit current (kA) [RMS]
32
20
10
4.0
1.6
0.63
0.40
1.0
2.5
6.3
16
25
0.16
0.25
100
10
1
0.1
0.001
0.01
0.1
1
10
MPW Manual Motor Protectors - Characteristics Curves