Tripping Characteristic Curves
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2018-08-16·BA00·III·en·03
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Motor Protection Circuit Breaker
Series 8146/5-V27
14
Tripping Characteristic Curves
The tripping characteristic curves refer to a 3-pole load condition from a cold state at a
room temperature of +20 °C and at any position of the scale.
The deviation of the tripping time (from a current three times higher than the rated current)
is no more than ±20% according to IEC/EN 60079-14.
The following tripping characteristic curves show the tripping time as a function of the
current ratio I
a
/I
e
.
Legend:
1) Multiples of the nominal current
2) Tripping time
3) 2-pole
4) 3-pole
5) Electromagnetic tripping
05930E00
