Technical specifications

General technical details

Standards

IEC 60947-1, IEC 60947-3, VDE 0660 Part 107

Type

3NJ410

3NJ412

3NJ413

3NJ414

3NJ56

3NJ415

3NJ418

3NJ416

3NJ417

Conventional thermal current

Free-air with gG fuses, Ith

A

160

250

400

630

1250

630

800

1260

1600

Free-air with isolating blade, Ith

A

--

--

--

800

--

1000

1250

1600

2000

Free-air with gTr fuses, Ith

A

--

--

--

--

1154

722

910

1154

1444

Rated apparent power of the transformer, Sn

kVA

--

--

--

--

800

500

630

800

1000

For fuse links and isolating blades

Size

00

1

2

3

4a

3

3

2 x 3

2 x 3

gG according to IEC 60269, In

A

160

250

400

630

1250

630

800

2 x 630

2 x 800

Free-air with isolating blade, In

A

--

--

--

--

--

1000

1250

2 x 800

2 x 1000

gTr according to VDE 0636-2011, Irat

A

--

--

--

--

1154

722

909

2 x 577

2 x 722

gTr according to VDE 0636-2011, Sn

kVA

--

--

--

--

800

500

630

2 x 400

2 x 500

Rated operational voltage (Ue)

  • At 40 Hz ... 60 Hz AC

V

690

690

690

690

690

690

400

690

400

Rated insulation voltage (Ui)

V

800

1000

1000

1000

1000

1000

690

1000

690

Rated impulse withstand voltage (Uimp)

kV

8

12

12

12

12

12

8

12

8

Rated conditional short-circuit current with fuses, at 500 V AC

With gG fuse (rms value)

kA

80 / 120

120

120

120

80

120

50

80

50

With gTr fuse (rms value)

kA

--

--

--

--

--

--

50

--

--

Max. permissible power loss per fuse link

W

12

32

45

48

110

51

61

48

51

Rated short-time withstand current ICW
when using isolating blades

in interlocking position and when using isolating blades instead of fuse links ("Fuseless switch disconnector"), 3-pole switchable version (exception: 3NJ414: 1-pole without interlocking position and 3-pole switchable), rms values

kA

--

--

--

10 / 15

--

15

15

25

25

Rated making and breaking capacity
Rated operational current Ie for gG fuses at

AC-21B

400 V AC

A

160

250

400

630

1250

630

800

2 x 630

2 x 800

AC-22B

400 V AC

A

160

250

400

630

1250

630

800

2 x 630

2 x 800

AC-23B

400 V AC

A

--

250

400

--

--

--

--

--

--

AC-21B

500 V AC

A

160

250

400

630

1250

--

--

--

--

AC-22B

500 V AC

A

160

250

400

630

1250

--

--

--

--

AC-23B

500 V AC

A

--

--

--

--

--

--

--

--

--

AC-21B

690 V AC

A

100

250

400

630

1250

--

--

--

--

AC-22B

690 V AC

A

100

250

--

--

--

--

--

--

--

AC-23B

690 V AC

A

--

--

--

--

--

--

--

--

--

Rated operational current Ie for gTr fuses at

AC-22B

400 V AC

A

--

--

--

--

--

722

910

2 x 577

2 x 722

Rated operational current Ie for isolating blades

AC-22B

400 V AC

A

--

--

--

--

--

1000

1250

2 x 800

2 x 1000

Permissible ambient temperature

°C

-25 ... +55, > 35 °C with derating factors

Mechanical endurance, operating cycles

1400

1400

800

800

500

800

500

500

500

Electrical endurance, operating cycles

200

200

200

200

100

100

100

100

100

Degree of protection

With closed fuse carrier, with terminal cover and peripheral cover

IP30

IP30

IP30

IP30

IP30

IP30

IP30

IP30

IP30

With open fuse carrier

IP10

IP10

IP10

IP10

IP10

IP10

IP10

IP10

IP10

Power loss of the main conducting paths at Ith

W

18

23

54

115

190

275

155

350

375

Main conductor connection

Terminal screws

M8

M10

M12

M12

M16

2 x M12

2 x M12

3 x M12

4 x M12

Flat bars

mm

20

30

30

30

80

80 x 10

80 x 10

--

--

Cable lug, max. conductor cross-section (stranded)

mm2

95

240

240

240

2 x 300

2 x 300

2 x 300

3 x 300

4 x 300

Tightening torque

Nm

12 ... 15

30 ... 35

35 ... 40

35 ... 40

50 ... 60

35 ... 40

35 ... 40

35 ... 40

35 ... 40

Clamp/V terminals

mm2

1.5 ... 70

25 ... 300

25 ... 300

25 ... 300

--

--

--

--

--

Fixing screws

M8

M12

M12

M12

M16

M12

M12

M12

M12

Required tightening torque for mounting on busbars

Nm

16 ... 18

35 ... 40

35 ... 40

35 ... 40

35 ... 40

50 ... 60

35 ... 40

35 ... 40

35 ... 40