21
A K D - 20 A N D E NTE LLYS I S
LO W VO LTAG E S W I TC H G E A R
3.8 Circuit breakers
The EntelliGuard low voltage power circuit breaker
includes spring-operated, stored energy, close
and trip mechanisms for either manual or
electrical operation.
EntelliGuard circuit breakers form the complete
family of breakers used in the AKD-20 and
Entellisys switchgear. Each type of breaker listed in
Table 3.2 describes the breaker interrupting rating
which corresponds to the 5th digit of the breaker
catalog number. These circuit breakers range from
400 to 5,000 ampere frame size.
EntelliGuard circuit breakers
Envelope 1 EntelliGuard circuit breaker
• 2,000 ampere frame size;
• Up to 100kAIC interrupting rating;
• Four high stacking; 22 inch wide sections.
Envelope 2 EntelliGuard circuit breaker
• 2,000 ampere frame size;
• Up to 100kAIC interrupting rating;
• Four high stacking; 22 inch wide sections.
Envelope 2 EntelliGuard circuit breaker
• 3,200 ampere frame size;
• Up to 100kAIC interrupting rating;
• Available in 22 inch wide sections.
Envelope 3 EntelliGuard circuit breaker
• 5,000 ampere frame size;
• Up to 150kAIC interrupting rating;
• Available in 38 inch wide sections.
—
Fig. 3.14
EntelliGuard E
circuit breaker
—
Fig. 3.15
—
Fig. 3.14
—
Fig. 3.15
EntelliGuard G circuit
breaker (shown with
draw-out rails extended)
1. Contact factory
2. EntelliGuard E Circuit Breakers exclude 400A and 1,200A ratings
Interrupting Rating Tiers ANSI/
UL1066 Devices, LVPCB
Envelope 1²
Envelope 2²
Envelope 3
Type
254 Vac
508 Vac 635 Vac 1/2S Withstand
400, 800,
1200
400,800,
1600, 2000
3200 400–3200
3200
4000–
5000
S
65,000
65,000
50,000
50,000
×
N
65,000
65,000
65,000
65,000
×
×
H
85,000
85,000
65,000
65,000
×
P
100,000 100,000
65,000
65,000
×
M
100,000 100,000 100,000
85,000
×
×
E
85,000
85,000
85,000
85,000
×
×
×
B
100,000 100,000 100,000
100,000
×
×
L
150,000 150,000 100,000
100,000
×
×
W1
200,000 200,000 100,000
100,000
×
×
Table 3.2 - EntelliGuard short time and short circuit interruption ratings
