Fuse switch disconnector LT size 2/60mm, 400A, screw terminal M10 LT253

Technical properties
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Technical properties

Rated current IN

400 A
Rated short-time withstand current Icw 1s IEC 60947

15.20 kA
Rated current for Ue=690 V AC according to IEC 61439-1 5.3.2

400 A
Fuse-links test rated cond. short-circuit current Ue=690 V IEC 61439-1 3.8.10.4

400 A
Rated conditional short-circuit current for Ue=400 V IEC 61439-1 3.8.10.4

80 kA
Rated current for Ue=440 V DC according to IEC 61439-1 5.3.2

400 A
Rated current at 45°C

380 A
Rated current at 55°C

340 A
Acceptable current rating AC23 category B / 400V

400 A
Acceptable current rating AC22 category B / 690V

400 A
Acceptable current rating AC23 category B / 500V

400 A
Rated current of fuse cartridge

25 A, 32 A, 35 A, 40 A, 50 A, 63 A, 80 A, 100 A, 125 A, 160 A, 200 A, 224 A, 250 A, 315 A, 355 A, 400 A, 300 A
Rated current at 40°C

400 A
Rated current at 70°C

280 A
Rated current for Ue=400 V AC according to IEC 61439-1 5.3.2

400 A
Rated conditional short-circuit current for Ue=500 V IEC 61439-1 3.8.10.4

80 kA
Rated current for Ue=250 V DC according to IEC 61439-1 5.3.2

400 A
Rated current at 65°C

300 A
Fuse-links test rated cond. short-circuit current Ue=400 V IEC 61439-1 3.8.10.4

400 A
Rated current for Ue=500 V AC according to IEC 61439-1 5.3.2

400 A
Rated conditional short-circuit current for Ue=690 V IEC 61439-1 3.8.10.4

80 kA
Fuse-links test rated cond. short-circuit current Ue=500 V IEC 61439-1 3.8.10.4

400 A
Rated current at 60°C

320 A
Rated current at 50°C

360 A

Fuse size

NH2

Cross-section flexible conductor

70 - 300 mm²
Cross-section rigid conductor

70 - 300 mm²
Connector/plug type

M10 terminal, Busbar
Output connection type

Screw terminal
Connection type input

Busbar

Type of connection

Screw terminal

Operating temperature

-25 - 55 °C
Storage/transport temperature

-40 - 70 °C
Degree of pollution according to IEC 60664 / IEC 60947-2

3

Nominal tightening torque

20 - 20 Nm
Tightening torque for mounting on busbar

8 - 8 Nm
Mounting on

Busbar system
Mounting-/Connection Position

Horizontal, Vertical

Frequency

50 - 60 Hz

Power dissipation at IN

37 W
Power dissipation at full load

139 W
Power dissipation of the Fuse-Link installed in device

34 W

Number of mechanical operations

800
Electric endurance in number of cycles

200
Total service life (mechanical and electrical endurance) IEC 60947-3 Table 4

1,000

Rated insulation voltage Ui

1,000 V
Rated impulse withstand voltage Uimp

8,000 V
Rated operational voltage Ue

690 - 690 V
Overvoltage category according to IEC 60947-1

4

Ingress Protection (IP) class

IP3X
Electronic fuse monitoring

No
Conventional free air therm. current with fuse link and standard cross-section IEC 60947-1

400 A
Conventional free air therm. current with solid link and standard cross-section IEC 60947-1

590 A

Height

306 mm
Width

210 mm
Depth

130 mm
Distance busbars

60 mm

Standard

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

Number of poles

3
Control/operation element

Cover grip

Cable entry position

Top

Flammability class according UL94

V0

Environmental value

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RoHS conform Yes

REACh-SVHC free Yes

Halogen free Yes