3KD, 3/4-pole, sizes 1 and 2

General technical details

Standards

IEC 60947-1, IEC 60947-3

Type

3KD16

3KD22

3KD26

3KD28

3KD30

3KD32

3KD34

3KD36..-.N

Size

1

1

1

2

2

2

2

2

Rated uninterrupted current (IU)

A

16

32

63

80

100

125

160

200

Conventional free-air thermal current Ith 1)

A

16

32

63

80

100

125

160

200

Rated operational voltage (Ue)

  • At 50/60 Hz AC (tolerance up to +10% permissible)

V

690

  • At DC – 2 conducting paths series-connected

V

220

  • At DC – 3 conducting paths series-connected

V

440

Rated insulation voltage (Ui)

V

1000

Rated impulse withstand voltage (Uimp)

kV

8

Overvoltage category with pollution degree 3

III

1) Configuring note: Max. permissible operating temperature at connections 125 °C

Operating and short-circuit behavior

Standards

IEC 60947-1, IEC 60947-3

Type

3KD16

3KD22

3KD26

3KD28

3KD30

3KD32

3KD34

3KD36..-.N

Rated operational current Ie

  • AC-21A, at AC-22A, at 400 … 690 V

A

16

32

63

80

100

125

160

200

  • AC-23A, at 400 V

A

16

32

63

80

100

125

160

160

  • AC-23A, at 500 V

A

16

32

63

80

100

125

160

160

  • AC-23A, at 690 V

A

16

32

63

80

100

125

125

125

  • DC-21A, 220/440 V

A

16

32

63

80

100

125

160

160

  • DC-22A, 220/440 V

A

16

32

63

80

100

125

160

160

  • DC-23A, 220/440 V

A

16

32

63

80

100

125

160

160

Motor switching capacity AC-23A1)

  • At 400 V

kW

7.5

15

30

45

55

55

90

90

  • At 500 V

kW

7.5

18.5

37

55

55

75

110

110

  • At 690 V

kW

11

30

55

75

90

110

110

110

Short-time withstand current Icw
(t = 1 s, rms value, 690 V AC/440 V DC)

kA

3

3

3

4

4

4

4

4

Short-circuit making capacity (Icm)

kA

7

7

7

12

12

12

12

12

Rated current of upstream fuse 2)3)

A

63

63

63

160

160

160

160

200

Rated conditional short-circuit current with upstream fuses 2)

  • At 400/500 V AC

kA

100

100

100

100

100

100

100

50

  • At 690 V AC

kA

100

100

100

65

65

65

65

50

Let-through current combined with upstream fuse 2)

  • At 400/500 V AC

kA

7

7

7

17.9

17.9

17.9

17.9

18

  • At 690 V AC

kA

7.5

7.5

7.5

18.7

18.7

18.7

18.7

19

Let-through I2t value combined with upstream fuse 2)

  • At 400/500 V

kA2s

13.3

13.3

13.3

135.6

135.6

135.6

135.6

211

  • At 690 V

kA2s

13.7

13.7

13.7

178.3

178.3

178.3

178.3

226

Power loss per pole with thermal current Ith

W

0.1

0.4

1

1.1

1.8

3.2

4.6

6.4

Service life, operating cycles

Mechanical

15000

15000

15000

15000

15000

15000

15000

15000

Electrical, at AC-23 A, 690 V/50 ... 60 Hz

6000

6000

6000

1500

1500

1500

1500

1500

Electrical, at DC-23 A, 220/440 V

1500

1500

1500

1500

1500

1000

1000

1000

1) Values are provided as a guide only and may vary depending on the make of motor.

2) Valid for the combination of 3KD and fuse type 3NA38 for IU=16...160 A; 3NA31 for IU = 200 A, characteristic gG

3) Maximum rated current of the upstream fuse; a fuse with a lower rated current can also be used.

Main conductor connection

Standards

IEC 60947-1, IEC 60947-3

Type

3KD16

3KD22

3KD26

3KD28

3KD30

3KD32

3KD34

3KD36..-.N

Conductor cross-section, max.

mm2

35

35

35

70 (95) 1)

70 (95) 1)

70 (95) 1)

70 (95) 1)

95

Busbar systems, max. dimensions (number x width x thickness)

  • Flat terminals

mm

--

1 x 20 x 3 2)

  • Box terminals

mm

1 x 9 x 2

1 x 14 x 3

Tightening torque

  • Flat terminals

Nm

--

15 ... 22

  • Box terminals

Nm

5 ... 6.5

6.5 ... 8

1) 95 mm2 valid for versions with flat terminals

2) When using busbars that are 20 mm wide, these must be insulated

Other properties

Standards

IEC 60947-1, IEC 60947-3

Type

3KD16

3KD22

3KD26

3KD28

3KD30

3KD32

3KD34

3KD36..-.N

Degree of protection

  • With masking plate without cable connection cover

IP20

IP20

IP20

IP20

IP20

IP20

IP20

IP20

  • Without masking plate or terminal cover

IP20

IP20

IP20

IP001) / IP20

IP00

Ambient conditions

  • During operation

°C

-25 ... +70 (no derating of Ith at -5 to +55 °C)

  • During storage

°C

-50 ... +80

  • Mounting position 2)

Any

1) Relevant only for devices with flat terminals

2) For mounting positions other than the vertical, please contact Technical Support.