
Rockwell Automation Publication 280E-UM001B-EN-P - July 2012 243
Specifications for EtherNet/IP Chapter 11
Motor Overload Trip Curves
Figure 90 - Bulletin 280E/281E Overload Trip Curves
Class 15 Ov erload Curv es
1
100
10000
0 100 200 300 400 500 600 700
Multiples for Full Load Current
Approximate Trip Time (sec)
Cold
Hot
Class 10 Ov erload Curves
1
10
100
1000
10000
0 1 00 200 300 400 500 600 70 0
Multiples of Full Load Current
Approximate Trip Time (sec)
Cold
Hot
Class 20 Ov erload Curv es
1
100
10000
0 100 200 30 0 400 500 600 700
Multiples of Full Load Current
Approximate Trip Time (sec)
Cold
Hot
Class 10
Class 15
Class 20
%
%
of
% of
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