DET-653C EntelliGuard
®
G Circuit Breaker Application Guide
24-May-12 Section 1. Introduction
©2012 General Electric All Rights Reserved
EntelliGuard
®
G Power Circuit Breaker
EntelliGuard G circuit breakers are the newest line of low voltage power circuit breakers (LVPCBs) evolved from the
exceptional designs and practices of GE legacy breakers. EntelliGuard G breakers offer a truly global product platform that
meets industry standards throughout the Americas, Europe and Asia (ANSI, UL, CSA, IEC, Lloyds Register of Shipping, etc.).
Breakers are available to OEMs in 3- and 4-pole designs from 400A to 6400A (IEC) with fault interruption ratings up to 150kA.
New, state-of-the-art EntelliGuard Trip Units enable the breakers with advanced technology that provides system
protection, local and remote monitoring, relaying and communications. EntelliGuard Trip Units may be supplied with either
Modbus or Profibus communications protocols. The breaker-trip unit system delivers superior circuit protection without
compromising selectivity or arc flash protection. The EntelliGuard system is yet another evolution of GE’s core competencies
in reliable electric power distribution, circuit protection and arc flash protection.
EntelliGuard G 3-pole breakers are the standard in GE AKD-20 Low Voltage Switchgear. The breakers are suitable for
280Vac, 480Vac and 600Vac applications, and they provide advanced circuit protection, limit arc fault energy and preserve
system coordination without sacrificing any of these critical functions (Table 1.1).
Table 1.1. Device Standards and References (See Section 8 for Details)
IEC® Extreme Atmospheric Conditions
IEC 68-2-1: Dry cold at -55°C
IEC 68-2-2: Dry heat at 85°C
UL489B DC for
IEC 68-2-30: Damp heat (temp. 55°C, rel. humidity 95%)
IEC 60947-3 IEC 68-2-52 Level 2: salt mist
CSA 22.2 NO 5.1
EntelliGuard G devices are available in all standard, 100% rated, ANSI, UL and IEC ratings in both fixed and draw-out
designs. Standard devices are also offered in 4 pole designs. No compromise (e.g., derating) is necessary in the system
protection scheme as the EntelliGuard G Neutral poles are fully rated. Front and rear access connections are available, and
all configurations can be manually or electrically operated with multiple and redundant accessories (optional) (Table 1.2).
Table 1.2. Device Ratings
EntelliGuard G short circuit and interrupting ratings are given in Tables 1.3 through 1.6.
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