Circuit Breakers - GE AKD-20 AR Installation And Maintenance Manual

DEH-41473

Circuit Breakers

The General Electric EntelliGuard low-voltage power circuit
breaker includes spring-operated, stored energy, close and
trip mechanisms for either manual or electrical operation.
General Electric EntelliGuard circuit breakers form the
complete family of breakers used in the AKD-20 AR and
Entellisys AR switchgear. Each type of breaker listed in Table
3.3describes the breaker interrupting rating which
corresponds to the 5 digit of the breaker catalog number.
th
These circuit breakers range from 400 to 5,000 ampere frame
size.
Envelope 1 EntelliGuard Circuit Breakers
• 2,000 ampere frame size
• Up to 100kAIC interrupting rating
• Four high stacking ; 22-inch wide sections
Envelope 2 EntelliGuard Circuit Breakers
•
2,000 ampere frame size
• Up to 100kAIC interrupting rating
• Four high stacking ; 22-inch wide sections
Envelope 2 EntelliGuard Circuit Breakers
• 3,200 ampere frame size
• Up to 100kAIC interrupting rating
•
Available in 22-inch wide sections
Envelope 3 EntelliGuard Circuit Breakers
•
5,000 ampere frame size
• Up to 200kAIC interrupting rating
• Available in 38-inch wide sections
Table 3.3 ANSI/UL 1066 Low-voltage power circuit breaker interruption ratings
Interruption Rating Tier (I )
CU
240 Vac 480 Vac
Type 254 Vac 508 Vac
Max. Max.
S 65,000A 65,000A
N 65,000A 65,000A
H 85,000A 85,000A
P 100,000A 100,000A 65,000A
E 85,000A 85,000A
M 100,000A 100,000A 100,000A 85,000A
B 100,000A 100,000A 100,000A 100,000A
L 150,000A 150,000A 100,000A 100,000A
W 200,000A 200,000A 100,000A 100,000A
1
1 – Contact Factory
2 – EntelliGuard E Circuit Breakers exclude 400A and 1,200A ratings
©2016 General Electric. All rights reserved.
Courtesy of NationalSwitchgear.com
Circuit Breaker/Cassette Sizes
600 Vac Withstand Envelope 1
635 Vac (I ) Continuous
CW
Max. 0.5 sec. Current
50,000A 50,000A 400-1,200A
65,000A 65,000A 400-2,000A
65,000A 65,000A 400-2.000A
65,000A 400-2,000A
85,000A 85,000A
AKD-20 AR / Entellisys AR Low-voltage Switchgear
Figure 3.19 EntelliGuard E circuit breaker
Figure 3.20 EntelliGuard G circuit breaker
Envelope 2
2 2
Close & Continuous Close &
Latch Current Latch
42,000A
400-3,200A
65,000A
400-3,200A
Section 3. Switchgear Description
Envelope 3
Continous Close &
Current Latch
4,000-5,000A
3,200-5,000A
100,000A
3,200-5,000A
3,200-5,000A
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