System information
™
Masterpact™ NT and NW Universal Power Circuit Breakers
Trip Curves
175
05/2014
© 2000–2014 Schneider Electric
All Rights Reserved
Figure 171: Micrologic 3.0A Trip Unit: Instantaneous Pickup, 1.5X to 12X
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1.5 x
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5 x 10 x
2 x
3 x
4 x 6 x 8 x 12 x
MICROLOGIC
®
3.0 A TRIP UNIT
CHARACTERISTIC TRIP CURVE NO. 613-8
Instantaneous Pickup
1.5x-12x
The time-current curve information is to be used
for application and coordination purposes only.
Curves apply from -30° to +60°C ambient
temperature.
Instantaneous override values are given on
613-10.
Notes:
1. The end of the curve is determined by the
interrupting rating of the circuit breaker.
2. Total clearing times shown include the
response times of the trip unit, the circuit
breaker opening, and the extinction of the
current.
3. The instantaneous region of the trip curve
shows maximum total clearing times. Actual
clearing times in this region can vary
depending on the circuit breaker mechanism
design and other factors. The actual clearing
time can be considerably faster than indicated.
Contact your local Sales Office for additional
information.
4. See 613-6 for long-time pickup and delay trip
curves.