ABB ACB - Air Circuit Breaker


Air circuit breakers are available for a large number of applications.

The new series of air circuit-breakers consists of five sizes (E1, E2, E3, E4 and E6) in the fixed and withdrawable versions, with rated uninterrupted currents from 800 to 6300 A and breaking capacities up to 150 kA at 415 V.
Different models of circuit-breakers for each size are available, all with the same dimensions, but with various rated currents and with different breaking capacities, identified by letters, as specified in the table.
The series is completed by a range of current-limiting circuit-breakers, of different construction concept, particularly recommended in plants characterised by high short-circuit currents.
Customisation of the circuit-breaker is carried out by means of a complete range of accessories - common over the whole range, which can be installed from the front of the circuit-breaker without the need for any internal cabling.
Furthermore, the following are available:

  • versions with full neutral, provided for the whole range for applications where the homopolar line current is high;
  • derived versions, for specific uses, such as switch-disconnectors, isolating truck, earthing switch with making capacity, and earthing truck;
  • special versions: 1150 V AC circuit-breakers, 1150 V AC and 1000 V DC switch-disconnectors, as well as applications for anti-seismic installations, marine uses or suitable for particularly aggressive environments (SO2 / H2S).

Power distribution AC

For protection in alternating current, the circuit-breakers are fitted with the new series of electronic releases which offer the following main characteristics:
  • SACE PR121/P, the basic release with the following protection functions: overload(L), selective short-circuit(S), adjustable instantaneous short-circuit(I) and Earth fault(G)
  • SACE PR122/P, the intermediate release. It offers, further to protection (L, S, I, G), measuring and communication functions.
  • SACE PR123/P, the advanced release. In addition to the above units, it offers more communication and measuring capabilities and other functions like, for example: harmonic analyses, directional protection and phase rotation.
X1
E1
E2
E3
E4
E6
Rated current Iu
[A]
630 -1600
800-1600
800-2000
800-3200
3200-4000
3200-6300
Iu N (4 poles CB)
[%Iu]
100
100
100
100
50
50
Ue AC (50-60 Hz)
[V]
690
690
690
690
690
690
Ui
[V]
1000
1000
1000
1000
1000
1000
Uimp
[KV]
12
12
12
12
12
12
Test voltage (50 Hz, 1 min)
[V]
3500
3500
3500
3500
3500
3500
N° of poles
[No.]
3-4
3-4
3-4
3-4
3-4
3-4
Icu Rated ultimated short-circuit breaking capacities
Icu AC 50-60 Hz 220-415 V
[kA]
42-150
42-50
42-130
65-130
75-150
100-150
Icu AC 50-60 Hz 440 V
[kA]
42-130
42-50
42-110
65-130
75-150
100-150
Icu AC 50-60 Hz 500-690 V
[kA]
42-60/100
42-50
42-85
65-100
75-100
100
Ics Rated service short-circuit breaking capacities
Ics AC 50-60 Hz 220-415 V
[kA]
42-150
42-50
42-130
65-130
75-150
100-125
Ics AC 50-60 Hz 440 V
[kA]
42-130
42-50
42-110
65-110
75-150
100-125
Ics AC 50-60 Hz 500-690 V
[kA]
42-45/100
36
42-65
65 - 85
75-100
100
Icw Rated short-time withstand current
Icw (1s)
[kA]
15-42
42-50
10-65
15-85
75-100
100
Icw (3s)
[kA]
-
36
42
65
75
75 - 85
Icm Rated short-circuit making capacity
Icm AC 50-60 Hz 220-415 V
[kA]
88.2-330
88.2-105
88.2-286
143-286
165-330
220-330
Icm AC 50-60 Hz 440 V
[kA]
88.2-286
88.2-105
88.2-242
143-242
165-330
220-330
Icm AC 50-60 Hz 500-690 V
[kA]
88.2-132/220
75.6
84-187
143-187
165-220
220
Category of use (IEC 60947-2)
A-B
B
A-B
A-B
B
B
Isolation behaviour (IEC 60947-2)
X
X
X
X
X
X
Overcurrent protection
Electronic releases for AC applications
X
X
X
X
X
X
Operating times
Closing time (max)
[ms]
80
80
80
80
80
80
Trip time for I<Icw (max) (1)
[ms]
70
70
70
70
70
70
Trip time for I<Icw (max)
[ms]
12-30
30
12-30
12-30
30
30
Overall dimensions - Fixed
[mm]
Width - (3/4 poles)
210/280
296/386
296/386
404/530
566/656
782/908
Depth - D
181
302
302
302
302
302
High - H
268
418
418
418
418
418
Overall dimensions - Widthdravable
[mm]
Width - (3/4 poles)
284/354
324/414
324/414
432/558
594/684
810/936
Depth - D
254
396.5
396.5
396.5
396.5
396.5
High - H
343
461
461
461
461
461
Weights
Fixed 3/4 poles
[kg]
11/14
45/54
50/63
66/83
97/117
140/160
W 3/4 poles (including fixed part)
[kg]
32/42.6
70/82
78/95
104/127
147/190
210/260
Version
F-W
F-W
F-W
F-W
F-W
F-W

(1) without intentional delays
Versions caption:
F fixed
withdrawable


Power distribution DC

The SACE Emax range of low voltage automatic circuit-breakers is being enriched by the new series SACE Emax DC of automatic circuit-breakers for direct current applications in compliance with the
international standard IEC60947-2. 
Thanks to the exclusive technology of the new electronic SACE PR123/DC e PR122/DC the SACE Emax DC range allows to cover all installation and automatic protection needs up to 1000V / 5000A DC.
By connecting three breaking poles in series it is possible to achieve a rated voltage of 750V DC, while with four poles in series the limit rises 1000V DC.
The automatic circuit-breakers of SACE Emax DC range maintain the overall dimensions and fixing points of the standard range circuit-breakers; they can be fitted with the various terminal kits and all
accessories common to the SACE Emax range.
The withdrawable circuit-breakers should be used together with the special version fixed parts for applications at 750/1000 DC.
E2
E3
E4
E6
Performance levels
B
N
N
H
S
H
H
Iu Rated current
Iu[A]
800
800
Iu[A]
1000
1000
Iu[A]
1250
1250
Iu[A]
1600
1600
1600
1600
1600
Iu[A]
2000
2000
2000
Iu[A]
2500
2500
2500
Iu[A]
3200
3200
3200
Iu[A]
4000
Iu[A]
5000
Icu Rated ultimate short-circuit breaking capacity
Icu (500V DC)[kA]
35
50
60
85
75
100
100
Icu (750V DC)[kA]
25
35
50
65
65
85
85
Icu (1000V DC)[kA]
25
35
35
65
50
65
65
Ics Rated service short-circuit breaking capacity
Ics[%Icu]
100%
100%
100%
100%
Icw Rated short-time withstand current (0.5s)
Icw (500V DC)[kA]
35
50
35
65
75
100
100
Icw (750V DC)[kA]
25
35
35
65
65
85
85
Icw (1000V DC)[kA]
25
35
35
65
50
65
65
Icm Rated short-circuit making capacity
Icm[%Icu]
100%
100%
100%
100%
Utilization category (IEC 60947-2)
B
B
B
B
Isolation behaviour (IEC 60947-2)
X
X
X
X
Electronic releases for AC applications
X
X
X
X
Operating times
Closing time (max)[ms]
80
80
80
80
Breaking time for I<Icw (max) (1)[ms]
70
70
70
70
Breaking time for I<Icw (max)[ms]
30
30
30
30
Overall dimensions - Fixed
Width - W (3/4 poles)[mm]
296/386
404/530
566/656
782/9088
Depth - D[mm]
302
302
302
302
High - H[mm]
418
418
418
418
Overall dimensions - Widthdravable
Width - (3/4 poles)[mm]
324/414
432/558
594/684
810/936
Depth - D[mm]
396.5
396.5
396.5
396.5
High - H[mm]
461
461
461
461
Weights
Fixed 3/4 poles[kg]
50/61
66/80
97/117
140/160
W 3/4 poles (including fixed part)[kg]
78/95
104/127
147/190
210/240
Voltages
Ue Rated service voltage[V-]
1000
1000
1000
1000
Ui Rated insulation voltage[V]
1000
1000
1000
1000
Uimp Rated impulse withstand voltage[kV]
12
12
12
12
Operanting temperature[°C]
-25..+70
-25..+70
-25..+70
-25..+70
Storage temperature[°C]
-40..+70
-40..+70
-40..+70
-40..+70
Numbers of poles
3/4
3/4
3/4
3/4

(1) without intentional delays
Versions caption:
F fixed
withdrawable


Full-size neutral conductor

The Emax range of automatic circuit-breakers with full-size neutral conductor is used in special applications where the presence of third harmonics on individual phases can lead to a very high current on the neutral conductor.
Typical applications include installations with loads having high harmonics distortion (computers and electronic devices in general), lighting systems with a large number of fluorescent lamps, systems with inverters and rectifiers, UPS, and systems for adjusting the speed of electric motors.
This range includes standard circuit-breakers with full-size neutral conductor in sizes E1, E2, E3. Models E4 and E6 are available in the "Full size" version up to rated currents of 6300A.
Models E4/f and E6/f are available in fixed and withdrawable four-pole versions. These models can all be fitted with all accessories available for the Emax range, with the exception, on the E6/f model, of the mechanical interlocks made using flexible wires and 15 external auxiliary contacts, which are therefore incompatible.
All the models can be fitted with all the available versions of electronic protection relays, in the standard version.


E4S/f
E4H/f
E6H/f
Rated current Iu[A]
4000
3200-4000
4000-6300
Iu N (4 poles CB)[%Iu]
100
100
100
Ue AC (50-60 Hz)[V]
690
690
690
Ui[V]
1000
1000
1000
Uimp[KV]
12
12
12
Test voltage (50 Hz, 1 min)[V]
3500
3500
3500
N° of poles[No.]
4
4
4
Breaking capacities
Icu AC 50-60 Hz 220-440 V[kA]
80
100
100
Icu AC 50-60 Hz 500-690 V[kA]
75
100
100
Ics AC 50-60 Hz 220-440 V[kA]
80
100
100
Ics AC 50-60 Hz 500-690 V[kA]
75
100
100
Icw (1s)[kA]
80
85
100
Icw (3s)[kA]
75
75
85
Icm (peak valuie)
Icm AC 50-60 Hz 220-440 V[kA]
176
220
220
Icm AC 50-60 Hz 500-690 V[kA]
165
220
220
Category of use (IEC 60947-2)
B
B
B
Isolation behaviour (IEC 60947-2)
X
X
X
Overcurrent protection
Electronic releases for AC applications
X
X
X
Operating times
Closing time (max)[ms]
80
80
80
Trip time for I<Icw (max) (1)[ms]
70
70
70
Trip time for I<Icw (max)[ms]
30
30
30
Overall dimensions
F.: H= 418mm - D= 302mm - L[mm]
746
746
1034
W.: H= 461mm - D= 396.5 mm - L[mm]
774
774
1062
Weights
Fixed[kg]
125
125
185
W (including fixed part)[kg]
200
200
275
Version
F-W
F-W
F-W

(1) without intentional delays

Versions caption:
F = fixed
W = withdrawable

Switch-disconnectors

The switch-disconnectors are derived from the corresponding circuit-breakers, of which they keep the overall dimensions and the possibility of mounting the accessories.
This version only differs from the circuit-breakers in the absence of the overcurrent releases.
The circuit-breaker is available both in the fixed and withdrawable version, three-pole and four-pole. The switch-disconnectors, identified by the code "/MS", can be used according to the category of use AC-23A (Motor switching or other highly inductive loads) according to the IEC 60947-3 Standard. The electrical characteristics of the switch-disconnectors are given in the table below.


X1B/MS
E1/MS
E2/MS
E3/MS
E4/MS
E6/MS
Rated current Iu[A]
1000-1600
800 -1600
1000 - 2000
800 - 3200
3200 - 4000
4000 - 6300
Ue AC[V]
690
690
690
690
690
690
DC[V]
250
250
250
250
250
250
Ui[V]
1000
1000
1000
1000
1000
1000
Uimp[KV]
12
12
12
12
12
12
Icw (1s)[kA]
42
42 - 50
42 - 65
65 - 85
75 - 100
100
(3s)[kA]
-
36
42
65
75
85
Icm
@ 220 - 440 V AC[kAp]
88.2
88.2 - 105
88.2 - 187
143 - 286
165 - 220
220
@ 500 - 690 V AC[kAp]
88.2
75.6
88.2 - 143
143 - 220
165 - 187
220

ACBs up to 1150 V AC

The SACE Emax circuit-breakers can be supplied, in a special version, for rated service voltages up to 1150 V in alternating current.
The circuit-breakers in this version are defined by the code of the standard range (rated service voltage up to 690 V AC) together with the code "/E" and are derived form the corresponding standard SACE Emax circuit-breakers of which they keep the versions and accessories. The range of SACE Emax circuit-breakers for applications up to 1150 V in alternating current is available in the fixed and withdrawable version both in the three-pole and four-pole version. The SACE Emax/E circuit-breakers are particularly suitable for installation in mines, petrochemical plants and in traction.
The electrical characteristics of the range are indicated in the table below.

X1B/E
E2B-N/E
E3H/E
E4H/E
E6H/E
Rated current Iu[A]
630-1600
1250-2000
1250-3200
3200-4000
5000-6300
Ue AC 50-60 Hz[V]
1000
1150
1150
1150
1150
Breaking capacity
Icu 1000 V[KA]
20
20 - 30
50
65
65
1150 V
-
20 - 30
30
65
65
Ics 1000 V[KA]
20
20 - 30
50
65
65
1150 V
-
20 - 30
30
65
65
Icw (1s)[kA]
20
20 - 30
50
65
65


Switch-disconnectors up to 1150 V AC

The range of apparatus for applications at 1150 V in alternating current (AC) is completed with the switch-disconnectors. These circuit-breakers are according to the international IEC 60947-3 Standard.
The circuit-breakers in this version are defined by the code of the standard range, where the rated service voltage is up to 690V AC, together with the code "/E", which therefore becomes SACE Emax/E MS and are derived from the corresponding standard SACE Emax switch-disconnectors.
The three-pole, four-pole versions fixed and withdrawable versions are available with the same dimensions, characteristics of mounting accessories and installation of the same standard circuit-breakers. All the accessories foreseen for the SACE Emax range can be used. Furthermore, for the withdrawable version circuit-breakers, the standard fixed parts can be used.

X1B/E MS
E2B/E MS
E2N/E MS
E3H/E MS
E4H/E MS
E6H/E MS
Rated current Iu[A]
1000-1600
1600-2000
1250 - 2000
1250 - 3200
3200 - 4000
4000 - 6300
Ue[V]
1000
1150
1150
1150
1150
1150
Ui AC[V]
1000
1000
1000
1000
1000
1000
Uimp[KV]
12
12
12
12
12
12
N° of poles[No.]
3-4
3-4
3-4
3-4
3-4
3-4
Icw (1s)[kA]
20
20
30
50
65
65
Icm @ 1000 V AC[kAp]
40
40
63
105
143
143


Switch-disconnectors up to 1000 V DC

ABB SACE has developed the range SACE Emax/E MS of switch-disconnectors for applications up to 1000V in direct current conforming with the international IEC60947-3 Standards. These non-automatic circuit-breakers are particularly suitable for being used as bus-ties or main isolators in direct current installations, such as for the applications regarding electric traction. The range allows all installation requirements up to 1000V DC / 3200A or up to 750V DC/ 4000A to be covered. They are available in the fixed and withdrawable and in the three-pole and four-pole version.
With connection of three interruption poles in series, the rated voltage is 750V DC, whereas with four poles in series, it is 1000V DC.
The switch-disconnectors of the SACE Emax/E MS range keep the overall dimensions and the fixing points of the standard range of circuit-breakers unaltered, can be fitted with the various terminal kits and all the accessories common to the SACE Emax range. Naturally they cannot be associated with the electronic releases, CT and relative accessories for determining the currents and protection for applications in alternating current.
The withdrawable circuit-breakers must be associated with the fixed parts in a special version for applications at 750/1000V DC.

E1B/E 
MS
E2N/E 
MS
E3H/E 
MS
E4H/E 
MS
E6H/E 
MS
Rated current Iu[A]
800 -1250
1250...2000
1250...3200
3200 - 4000
5000 - 6300
Ue[V]
750 - 1000
750 - 1000
750 - 1000
750 - 1000
750 - 1000
Uimp[KV]
12
12
12
12
12
N° of poles[No.]
3-4
3-4
3-4
3-4
3-4
Icw (1s)[kA]
20
25
40
65
65
Icm Rated making capacity
750 V DC[kA]
42
52,5
105
143
143
1000 V DC[kA]
42
52,5
105
143
143


UL ANSI Standards

ABB SACE’s position as a major player on all world markets, meant needing to consider the American Standards right from the initial stages of designing the Emax apparatus. All the sizes of the apparatus, both three- and four-pole, fixed and withdrawable are, in fact, approved according to the UL ANSI 1066 North American Standards. And the same is valid for the corresponding switch-disconnectors.

Logo of UL certificateLogo of CSA certificate

Subpages (1): ACB-Accessories
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