Range

FuPacT

Product name

FuPacT ISFT

Device short name

ISFT250

Product or component type

Fuse-switch disconnector

Device application

Equipment protection, monitoring and control Distribution

Signalling function

Separated fuse monitor

Poles description

3P

Number of fuse carriers

3

Fuse type

DIN

Fuse size

NH1

Suitability for isolation

Yes conforming to EN/IEC 60947-3

Visible break

Yes

Contact position indicator

Yes

[Ith] conventional free air thermal current

250 A ( 40 °C ) power dissipation per fuse: 23 W

[Ithe] conventional enclosed thermal current

250 A at 40 °C, Power dissipation per fuse: 23 W

Maximum power dissipation per pole

29 W

[Ue] rated operational voltage

690 V AC 50/60 Hz 440 V DC 800 V AC 50/60 Hz AC-20 800 V DC DC-20

[Ui] rated insulation voltage

1000 V AC 50/60 Hz 1000 V DC

[Uimp] rated impulse withstand voltage

8 kV

[Ie] rated operational current

AC-21B: 250 A at 220/240 V AC 50/60 Hz AC-21B: 250 A at 380/415 V AC 50/60 Hz AC-21B: 250 A at 440/480 V AC 50/60 Hz AC-21B: 250 A at 500 V AC 50/60 Hz AC-21B: 250 A at 660/690 V AC 50/60 Hz AC-22B: 250 A at 220/240 V AC 50/60 Hz AC-22B: 250 A at 380/415 V AC 50/60 Hz AC-22B: 250 A at 440/480 V AC 50/60 Hz AC-22B: 250 A at 500 V AC 50/60 Hz AC-22B: 250 A at 660/690 V AC 50/60 Hz DC-21B: 250 A at 220 V DC (3 poles in series) DC-21B: 250 A at 440 V DC (3 poles in series) DC-22B: 250 A at 220 V DC (3 poles in series)

[Iq] Breaking capacity with fuses (kA RMS)

80 kA at 415 V (AC) 80 kA at 500 V (AC) 25 kA at 690 V (AC)

[Icw] rated short-time withstand current

8.6 kA for 1 s

[Icm] Rated short-circuit making capacity

14.6 kA at 690 V

Rated duty

Uninterrupted

Control type

Fuse carriers handle

Provision for padlocking

Lead seal

Mounting position

Vertical Horizontal

Mounting mode

Fixed

Mounting support

Mounting plate Busbars

Mounting location

Side by side

contact operation

Single-break

Mechanical durability

1600 cycles

Electrical durability

AC-21B: 200 cycles 690 V AC 50/60 Hz AC-22B: 200 cycles 690 V AC 50/60 Hz AC-23B: 200 cycles 415 V AC 50/60 Hz

Connections - terminals

Screw connection upstream M10 250 A Screw connection downstream M10 250 A

Tightening torque

12 N.m for terminal

Width

184 mm

height

306 mm

Depth

110 mm

Net weight

2 kg

standards

EN/IEC 60947-1 EN/IEC 60947-3

product certifications

CE CCC EAC

Electrical shock protection class

Class II front face

IP degree of protection

IP3x front face: conforming to IEC 60529

IK degree of protection

IK07 conforming to EN 50102

Pollution degree

3 conforming to IEC 60947

Ambient air temperature for operation

-20…70 °C

Ambient air temperature for storage

-50…85 °C

Unit Type of Package 1

PCE

Number of Units in Package 1

1

Package 1 Height

15.0 cm

Package 1 Width

20.0 cm

Package 1 Length

35.2 cm

Package 1 Weight

2.5 kg

Unit Type of Package 2

S04

Number of Units in Package 2

3

Package 2 Height

30.0 cm

Package 2 Width

40.0 cm

Package 2 Length

60.0 cm

Package 2 Weight

8.002 kg

Unit Type of Package 3

P12

Number of Units in Package 3

36

Package 3 Height

105.0 cm

Package 3 Width

80.0 cm

Package 3 Length

120.0 cm

Package 3 Weight

111.0 kg

Warranty

18 months