Siemens SENTRON 3KF LV HRC, Manual

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Technical specifications
10.1 Technical specifications – accessories
3KF switch disconnectors with fuses
112
Manual, 09/2019, L1V30580914002A-01
Sizes 2 to 5
Standards IEC 60947-5-1, IEC 60947-5-5
General technical details
Conventional free-air thermal current I
th
A 10
Rated insulation voltage U
i
V 500
Degree of pollution acc. to IEC 60947-1 Class 3
Rated impulse withstand voltage U
i
kV 6
Switching frequency 1/h 3600
Contact reliability
Test voltage
V 5
Test current mA 1
Degree of protection acc. to IEC 60529
Terminals
IP20
Contact compartment IP40
Ambient conditions
Ambient temperature
During operation °C -25 ... +70
During storage °C -40 ... +80
Degree of pollution 3
Endurance
Mechanical
10 million
Electrical 10 million
At AC-15 with 3RT1015 to 3RT1026 contactors 10 million
At DC-12 / DC-13 The electrical endurance with DC depends not only on current, but also
on voltage level, inductance of the load and switching speed.
Conductor connections
Finely stranded, with end sleeves acc. to
DIN 46228
mm
2
2 x (0.5 to 1.5)
Solid mm
2
2 x (0.5 to 0.75)
Solid, with end sleeves acc. to DIN 46228 mm
2
2 x AWG 18 to 14
AWG cables
Tightening torque Nm 0.8 ... 0.9