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2.3 Current Metering Data
Table 3. Current Metering Data.
Current
Metering
Units
IA, IB, IC, IN, IG
Amperes
Minimum IA, IB,
Amperes
IC, IN, IG
Maximum IA, IB,
Amperes
IC, IN, IG
Accuracy applicable for 10% to 120% of In at 25°C (77°F).
2.4 Time Current Curves
The Time-Current Curves (TCC) for the PT 10 trip unit
when used in Series IZMY air circuit breakers are
referenced to Series IZMY Air Circuit Breaker catalogue.
All protection settings shall be made according to
recommendations of the specifying engineer in charge of
the installation.
PT 10 TrIP UnIT User ManUal Power TrIP (PT) UnITs MN013021EN January 2024 www.eaton.com
Accuracy
Notes
±1.5% of Reading
±1.5% of Reading Group Values Held
Until Reset
±1.5% of Reading Group Values Held
Until Reset
3. Power Xpert® Release Trip Units
3. Power Xpert
Release Trip Units
®
The PT 10 is located on the front and to the left side
of the circuit breaker. It is encased in a housing which
provides protection to the electronics as well as providing
an interface for a user to configure protection settings and
monitor operation. Details of the interface and operation
are contained in the sections which follow.
Figure 3. PT Trip Unit Front Face.
Pickup/
Cause-of-Trip
Indicators
USB and
Auxiliary Power
Under Door
Battery
Tray
Status
Indicator
Rotary
Switches
Reset
Button
Door
3
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