Recommended cross section for nominal operation

The cross section of the supply system cables must be dimensioned based on the nominal line current Iline.

SEW‑EURODRIVE suggests the cable cross sections listed in the table. Cables with these cross sections can be used if the following conditions are met:

  • The conductors are made of copper with PVC insulation.
  • The cables are routed in cable ducts according to IEC 60204-1 installation type C at an ambient temperature of 40 °C.

MCX91A-….-5.3-..

Unit

Size

0S

0L

0010

0016

0020

0025

0032

0040

0055

0070

0095

Nominal line current AC Iline

A

0.9

1.4

1.8

2.3

2.9

3.6

5

6.3

8.6

Supply system cable L1/L2/L3

mm2

1.5

Fuse/miniature circuit breaker

A

10

MCX91A-….-5.3-..

Unit

Size

0L

3

4

5

0125

0160

0240

0320

0460

0620

0750

0910

Nominal line current AC Iline

A

11.3

14.4

21.6

28.8

41.4

55.8

67.5

81.9

Supply system cable L1/L2/L3

mm2

2.5

4

6

10

16

25

35

Fuse/miniature circuit breaker

A

16

25

32

50

63

80

100

MCX91A-….-5.3-..

Unit

Size

6

7

8

1130

1490

1770

2200

2500

3000

3800

4700

5880

Nominal line current AC Iline

A

102

134

159

198

225

270

In preparation

Supply system cable L1/L2/L3

mm2

50

70

95

150

Fuse/miniature circuit breaker

A

125

160

200

250

315

MCX91A-….-2.3-..

Unit

Size

0S

0L

0017

0025

0034

0042

0055

0070

0093

Nominal line current AC Iline

A

1.5

2.3

3.1

3.8

5

6.3

8.4

Supply system cable L1/L2/L3

mm2

1.5

Fuse/miniature circuit breaker

A

10

MCX91A-….-2.3-..

Unit

Size

0L

3

4

5

6

0140

0213

0290

0420

0570

0840

1080

Nominal line current AC Iline

A

12.6

19.2

26.1

37.8

51.3

75.6

97.2

Supply system cable L1/L2/L3

mm2

2.5

6

10

16

25

35

Fuse/miniature circuit breaker

A

16

20

32

50

63

80

100

MCX91A-….-2.1-..

Unit

Size

0S

0L

0017

0025

0034

0042

0055

0070

0093

0110

Nominal line current AC Iline

A

5.1

7

8.8

10.9

14.8

16

21.4

24.9

Supply system cable L1/L2/L3

mm2

1.5

2.5

4

Fuse/miniature circuit breaker

A

10

16

20

25

INFORMATION

Recommended cross section
The values are only recommendations. They are no substitute for detailed project planning of the cables depending on the concrete application and considering the applicable regulations.

INFORMATION

Securing the supply system cable
  • Secure the supply system cable with appropriate safety elements.
  • When selecting the supply system cable, make sure that the selected cross section is in the range of the connectable cross section of the terminals.

INFORMATION

Use of a residual current device
If using a residual current device is not mandatory according to the standards, SEW-EURODRIVE recommends not using a residual current device. Leakage currents caused by cable capacitances can lead to false tripping.