Technical specifications

General technical specifications

Standards

IEC 60947-1, IEC 60947-3, VDE 0660 Part 7

Type

3NP50

3NP52

3NP53

3NP54

Rated uninterrupted current (IU)

A

160

250

400

630

  • For fuse links acc. to IEC 60269-2

Size

00

1 and 0

2 and 1

3 and 2

Conventional free-air thermal current Ith

A

160

250

400

630

Rated operational voltage (Ue)

  • At 50/60 Hz AC

V

690

  • At DC (3 conducting paths series-connected)

V

440

  • At DC (2 conducting paths series-connected, fuse monitoring by 3RV)

V

220

Rated insulation voltage (Ui)

V

690 1)

Rated impulse withstand voltage (Uimp)

kV

6

Operating and short-circuit behavior

Standards

IEC 60947-1, IEC 60947-3, VDE 0660 Part 7

Type

3NP50

3NP52

3NP53

3NP54

Rated conditional short-circuit current with fuses (by fast switch on)

  • Rated current

Size/A

00/160

1/250

2/400

3/630

  • At 500 V AC

kA

50

50

50

50

  • Permissible let-through current of the fuses (peak value)

kA

15

25

40

50

Short-circuit strength with fuses (with closed disconnector)

  • Rated current

Size/A

00/160

1/250

2/400

3/630

  • At 500 V AC

kA

100

100

50

50

  • Maximum permissible let-through I2t value

kA2s

223

780

2150

5400

  • Permissible let-through current of the fuses (peak value)

kA

23

32

40

60

Rated short-circuit making capacity with isolating blades 2)

Size

00

1

2

3

  • At 500 V AC (peak value)

kA

6

17

17

17

Rated making and breaking capacity 2) (infeed from top or bottom) 3)

Size

00

1

0

2

1

3

2

Breaking current Ic

  • At p.f. = 0.35, rms value at 500 V

A

1300

2500

1600

4000

2500

5040

4000

  • At p.f. = 0.35, rms value at 690 V

A

800

1280

100

2520

1600

3200

2520

  • At p.f. = 0.35 and 400 V AC, with fuse links, rms value

A

1600

2500

1600

4000

2500

5040

4000

Rated operational current Ie

  • At AC-21B, AC-22B, AC-23B at 400 V AC, with fuse links

A

160

250

160

400

250

630

400

  • At AC-21B, AC-22B, AC-23B at 500 V AC, with fuse links

A

160

250

160

400

250

630

400

  • At AC-21B, AC-22B at AC 690 V

A

160

250

160

400

250

630

400

  • At AC-23B at 690 V AC

A

100

160

125

315

200

400

315

At 220 (440) V DC, with 2 (3) conducting paths series-connected and fuse links:

  • Breaking current Ic (L/R = 15 ms)

A

640

1000

640

1600

1600

2520

1600

  • Rated operational current Ie at DC-23B

A

160

250

160

400

250

630

400

Capacitor switching capacity

  • Capacitor rating at 400 V AC

kvar

80

90

150

250

  • Rated current In at 525 V AC

A

116

130

216

361

  • Capacitor rating

kvar

100

125

200

300

  • Rated current In

A

110

137

220

330

Power loss of the switch at Ith (without power loss of the fuse links)

  • Without busbar adapter

W

7.8 (16.3) 4)

7.5

15

39

Maximum power loss of the usable fuses (per fuse) 5)

W

12

23

37

50

Mechanical endurance, operating cycles

1600

1) When observing degree of pollution 2 (instead of 3) operation is also possible up to Ui=1000 V.

2) Rated making and breaking current according to IEC 60947-3:

ON: I = 10 x Ie (AC-23); 3 x Ie (AC-22); 1.5 x Ie (AC-21)

OFF: Ie = 8 x Ie (AC-23); 3 x Ie (AC-22); 1.5 x Ie (AC-21)

3) When electronic fuse monitoring devices are used, infeed must be from the top.

4) With busbar adapter.

5) Values are valid when using LV HRC fuse systems with characteristic gG. If using fuses for semiconductor protection, refer to chapter Derating values of 3NP5 fuse switch disconnectors when using SITOR fuses.

Main conductor connection

Standards

IEC 60947-1, IEC 60947-3, VDE 0660 Part 7

Type

3NP50

3NP52

3NP53

3NP54

Flat terminal for connection of

  • Crimped cable lugs acc. to DIN 46234 (conductor cross-section, stranded)

mm2

2.5 ... 120

6 ... 150

16 ... 240

16 ... 2 x 240

  • Pressed cable lugs acc. to DIN 46235 (conductor cross-section, stranded)

mm2

16 ... 70

16 ... 150

16 ... 240

16 ... 2 x 240

  • Busbars (usable busbar width)

mm2

16 ... 22

22 ... 30

22 ... 30

22 ... 30

  • Clamp terminals

Nm

2.5 ... 501)

35 ... 120

--

--

1) When connecting one conductor. For 2 conductors max. 1 x 50 mm2 and 1 x 35 mm2

Signaling contacts

Type

IEC 60947-1, IEC 60947-3, VDE 0660 Part 7

Version

3NP50

3NP52

3NP53

3NP54

Auxiliary switch 2 NO + 1 NC (accessories)

The same voltage potential must be applied to the NO and NC contacts

  • At 50/60 Hz to 400 V AC, rated operational current Ie at
    AC-12/AC-15

V

16/6

  • Flat plug-in terminals (DIN 46244)

V

A 6.3 ... 0.8

Signaling contact for electronic fuse monitoring

1 NO + 1 NC

Rated operational current Ie

  • At DC-13, at 250 V

A

0.27

  • At AC-15, at 240 V

A

1.5

  • Thermal free-air rated current Ith

A

5

Other properties

Standards

IEC 60947-1, IEC 60947-3, VDE 0660 Part 7

Type

3NP50

3NP52

3NP53

3NP54

Degree of protection

  • Without molded-plastic masking frame

IP00, for 3NP52 with terminal clamp connection, IP10

  • With molded-plastic masking frame with closed fuse carrier on the operator side

IP30

  • With molded-plastic masking frame with open fuse carrier

IP10

Ambient conditions 1)

  • Ambient temperature during operation 2)

°C

-25 ... +55

  • Ambient temperature during storage

°C

-50 ... +80

  • Mounting position

Vertical or horizontal installation (switching capacity may be reduced with horizontal installation)

1) When using isolating blades. If using fuse links, please observe specifications of fuse manufacturer.

2) With busbar adapter