Air Circuit Breaker Product Catalogue and ACB Price List - Shopelect
Air Circuit Breaker Product Catalogue and ACB Price List - Shopelect
Air Circuit Breaker Product Catalogue and ACB Price List - Shopelect
Email:shop@shopelect.com
Website:www.shopelect.com
ACB-B Type
IS: 8828
Technical Overview
Salient Features
n
Fast acting mechanism (total breaking time less than 30ms including arcing time of less than 10ms) minimizes installation stress
under fault condition
High dielectric strength due to use of class 'B' and 'F' insulating material ensures reliable performance in tropical conditions
Stationary Contact
Moving Contact
Contact Shaft
Electromagnetic
Repulsive Force
Contact Lead
Current
Arc
Stationary Contact
Separating Force Resulting from
Repulsive Force
Separating Force by Trip Spring
Moving Contact
Trip Spring
Contact Holder Shaft
Electromagnetic
Repulsive Force
Current
Technical Specifications
Amperes Frame (based on IEC / IS)
Type (3 Poles)
Insulation Voltage Ui (V) AC
400
AH-4B
630
AH-6B*
800
AH-8B*
1000
AH-10B
1250
AH-12B
1600
AH-16B
1000
1000
1000
1000
1000
1000
3.5
3.5
3.5
3.5
3.5
3.5
105
105
105
105
105
105
50
50
50
50
50
50
50
50
50
50
50
50
30/40
30/40
30/40
30/40
30/40
30/40
40
40
40
42
42
44
* 630A & 800A ACBs are also available in 45kA breaking capacity at 415V AC operating voltage & 690V insulation voltage.
Protection Release
Microprocessor Release
IT-100 is a true RMS sensing overcurrent trip device, requires no external
supply for its basic function.
Salient Features
n Error free and user friendly setting of current/time.
n Provides highest degree of system protection coordination.
n Self powered by built in current transformer.
n No mal-operation due to external disturbances.
n Built in operation check function.
n Visual fault discrimination by LEDs.
n Three phase and earth fault in one single compact unit.
n Self monitoring of trip unit with blinking indication.
n Function Blocking facility provided.
Tripping Characteristics
Over Load Current (LTD)
LTD Current
Setting range: 0.5, 0.55 ...1.15 In (in steps of 0.05)
LTD Time
Setting range: 2.5, 5 ....... to 35 sec. (in steps of 2.5 sec.)
Short Circuit Current (STD)
STD Current
Setting range: 4, 5 ... 10 In (in steps of 1)
STD Time
Setting Range: 50, 100, ... 550 ms. (in steps of 50 ms)
Instantaneous Current (INS)
Current (INS)
Setting Ranges: 4, 5, ... 11In (in steps of 1)
Ground Fault (GFT)
GFT Current
Setting Range: 15, 20, ... 50% In (in steps of 5%)
GFT Time
Setting Range: 50, 100, ... 550 ms (in steps of 50ms)
Function Blocking In normal running operation of unit, any of the four function
can be blocked by turning the DIP switches to ON position
3
2
80%
100%
120%
minute
------
3
2
Operating Time
40ms.
30ms.
50
40
30
Rated Current
20
10
8.0
6.0
Applicable Breaker
AH-6B
AH-8B
5.0
4.0
3.0
600
400
500
200
250
300
80
100
120
125
150
2.0
60
70
20
8
second
50
TIME
hour
1.3
1.05
Tripping Characteristics
AH-10B
AH-12B
AH-16B
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Panel Cutout
15
151.5
151.5
15
166
166
332
Rear View
102SGR/B/062011
Side View