DET-653C
EntelliGuard
®
G Circuit Breaker Application Guide
24-May-12
Section 3. EntelliGuard
®
TU Trip Unit System
©2012 General Electric All Rights Reserved
26
Figure 3.11. Zone Selective Interlocked CB, Upper
CB Shown “Unrestrained”
Figure 3.12. Zone Selective Interlocked CB, Upper CB
Shown “Restrained”
Universal Trip Rating Plugs
The EntelliGuard TU trip system is composed of trip units and
trip rating plugs along with the sensors and wiring provided
in the EntelliGuard G circuit breaker to support the trip.
Rating plugs are used to lower the Long Time adjustment
range of the sensor provided in the circuit breaker.
The EntelliGuard TU trip rating plugs are unique in that they
can be used with multiple trip units and circuit breakers
within a specific sensor range, rather than only with a single
specific sensor. The trip rating plug catalog number, shown
in Figure 3.13, identifies the rating as well as the minimum
and maximum sensor rating the plug may be used with.
Table 3.12 lists trip rating plugs available for each sensor.
Table 3.13 lists the two-digit codes used within the trip rating
plug catalog numbers and the sensor current ratings to
which they are mapped.
Figure 3.13. EntelliGuard Trip Unit Rating Plug Catalog
Number Guide
