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FH1, FH2, FH3 Fuse switch-disconnectors

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Parameters
Accessories
Certification marks
Rated operating voltage AC/DC 690 V
Rated operating current 250 ÷ 630 A
Utilization category (switching mode) / AC 400 V / single-pole design AC-23B
Utilization category (switching mode) / AC 500 V / three-pole design AC-22B ÷ AC-23B
Utilization category (switching mode) / AC 690 V AC-21B ÷ AC-22B
Utilization category (switching mode) / DC 440 V / two-pole connection DC-21B
Utilization category (switching mode) / DC 440 V / 300 A single-pole connection DC-21B
Rated conditional short-circuit current (RMS) AC 400 V 120 kA
Rated conditional short-circuit current (RMS) AC 550 V 50 kA
Rated conditional short-circuit current (RMS) AC 690 V 25 kA
Rated impulse withstand voltage 12 kV / FH.-.A/., 6 - 8 kV / FH.-.S/., 12 kV / FH.-.L/.
Rated short-time withstand current 15 - 20 kA
Rated short-circuit making capacity / AC 400 V 25 - 30 kA
Rated insulation voltage 1000 V a.c.
Max. power losses of the fuse-link 23 - 48 W
Power losses without fuse-link / In 9 - 49 W
Degree of protection from front side, built-in device, cover opened IP20
Degree of protection from front side, built-in device, cover closed IP30

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