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Hitachi

Hitachi Industrial Components & Equipment

Air Circuit Breakers : Ratings

400A — 1600A

TYPE AK-06***C AK-08***C AK-10***C AK-13***C AK-16***C
Rated current (In max) (A) 630, 400 800 1000 1250 1600
Rated operating voltage (Ue) (V) 690 690 690 690 690
Rated insulation  voltage (Ui) (V) 1000 1000 1000 1000 1000
Frequency *2 (Hz) 50/60 50/60 50/60 50/60 50/60
Number of poles (P) 3, 4 3, 4 3, 4 3, 4 3, 4
Setting current (In) (A) OCR-II For industry In max.×1.0-0.9-0.8-0.7-0.6-0.5-0.4(7 Steps)
OCR-III *3 For industry In max.×1.0-0.9-0.8-0.7-0.6-0.5-0.4-0.3-0.2
(9 Steps)
For generator protection In max.×1.0-0.9-0.8-0.7-0.6-0.5-0.4-0.3-0.2
(9 Steps)
Rated current of neutral pole (A) 630 800 1000 1250 1600
Rated breaking capacity(Sym) (Icu) (kA) IEC60947-2 AC 690V 50 50 50 50 50
600V 50 50 50 50 50
500V
Under		 65 65 65 65 65
Rated service breaking capacity (Ics) (kA) …%×Icu 100% 100% 100% 100% 100%
Rated making capacity(peak) (Icm) (kA) IEC60947-2 AC 690V 105 105 105 105 105
600V 105 105 105 105 105
500V
Under		 143 143 143 143 143
Rated short-time capacity (Icw) (kA) 1 sec 65 65 65 65 65
2 sec 40 40 40 40 40
3 sec 30 30 30 30 30
operating time (t) (ms) Maximum total breaking time 40 40 40 40 40
Closing time 80 80 80 80 80
Life cycle (time) Mechanical Without maintenance 12000 12000 12000 12000 12000
With maintenance 20000 20000 20000 20000 20000
Electrical Without maintenance 3000 3000 3000 3000 3000
With maintenance 5000 5000 5000 5000 5000
Weight
(3P/4P)		 (kg) Draw-out type Main body
(with cradle)		 Motor charging type 66/80 67/81 67/81 67/81 67/81
Manual charging type 63/77 64/78 64/78 64/78 64/78
Cradle only 26/30 26/30 26/30 26/30 26/30
Fixed type Motor charging type 43/53 44/54 44/54 44/54 44/54
Manual charging type 40/50 41/51 41/51 41/51 41/51
Bus-bar Connection type Horizontal type *4 Standard Standard Standard Standard Standard
Vertical type Option Option Option Option Option
Closing type Motor charging type Standard Standard Standard Standard Standard
Manual charging type Option Option Option Option Option
External dimension Draw-out type (mm) H : 435, D : 479 W (3P/4P) 350/435 350/435 350/435 350/435 350/435
Fixed type (mm) H : 410, D : 375 W (3P/4P) 345/430 345/430 345/430 345/430 345/430

2000A — 5000A

TYPE AK-20***C AK-25***C AK-32***C AK-40***C AK-50***C
Rated current (In max) (A) 2000 2500 3200(3150) *1 4000 5000
Rated operating voltage (Ue) (V) 690 690 690 690 690
Rated insulation  voltage (Ui) (V) 1000 1000 1000 1000 1000
Frequency *2 (Hz) 50/60 50/60 50/60 50/60 50/60
Number of poles (P) 3, 4 3, 4 3, 4 3, 4 3, 4
Setting current (In) (A) OCR-II For industry In max.×1.0-0.9-0.8-0.7-0.6-0.5-0.4(7 Steps)
OCR-III *3 For industry In max.×1.0-0.9-0.8-0.7-0.6-0.5-0.4-0.3-0.2(9 Steps)
For generator protection In max.×1.0-0.9-0.8-0.7-0.6-0.5-0.4-0.3-0.2(9 Steps)
Rated current of neutral pole (A) 2000 2500 3200 2500 2500
Rated breaking capacity(Sym) (Icu) (kA) IEC60947-2 AC 690V 50 50 50 50 50
600V 65 65 65 85 85
500V Under 85 85 85 100 100
Rated service breaking capacity (Ics) (kA) …%×Icu 100% 100% 100% 100% 100%
Rated making capacity(peak) (Icm) (kA) IEC60947-2 AC 690V 105 105 105 105 105
600V 143 143 143 187 187
500V Under 187 187 187 220 220
Rated short-time capacity (Icw) (kA) 1 sec 65 65 65 85 85
2 sec 60 60 60 65 65
3 sec 60 60 60 65 65
operating time (t) (ms) Maximum total breaking time 40 40 40 40 40
Closing time 80 80 80 80 80
Life cycle (time) Mechanical Without maintenance 10000 10000 10000 10000 10000
With maintenance 20000 20000 20000 20000 20000
Electrical Without maintenance 3000 3000 3000 3000 3000
With maintenance 5000 5000 5000 5000 5000
Weight (3P/4P) (kg) Draw-out type Main body
(with cradle)		 Motor charging type 95/116 96/117 98/119 244/267 244/267
Manual charging type 92/113 93/114 95/116 240/263 240/263
Cradle only 35/43 35/43 36/44 125/140 125/140
Fixed type Motor charging type 63/75 64/76 66/78 119/127 119/127
Manual charging type 60/72 61/73 63/75 115/123 115/123
Bus-bar Connection type Horizontal type *5 Standard Standard Standard Standard offer in the fixed type
Vertical type Option Option Option Standard offer in the draw-out type
Closing type Motor charging type Standard Standard Standard Standard Standard
Manual charging type Option Option Option Option Option
External dimension Draw-out type (mm) H : 435, D : 479 W (3P/4P) 485/615 485/615 485/615 960/1090 960/1090
Fixed type (mm) H : 410, D : 375 W (3P/4P) 480/610 480/610 480/610 870/1000 870/1000

Note

*1
Rated current of IEC standard
*2
Trip relay is divided into 50Hz and 60Hz. Please be careful when you order it.
*3
The generator protection relay is only available in OCR-III.
*4
For mainbody, only horizontal type is available. For cradle, vertical type is optional. In case of vertical type use of the horizontal type,
the user needs to apply the vertical adapter, The vertical type is standard for 4000/500AF.
*5
For 4000/5000AF, height is 455mm

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