H 7021 (0548)
All rights reserved. Equipment subject to change without notice: 499
HIMA Paul Hildebrandt GmbH + Co KG, P.O. Box 1261, 68777 Brühl
H 7021
H 7021: Power supply filter
• for power supply systems 48 VDC
Figure 1: H 7021 power supply filter
The power supply filter H 7021 dampens wide-banded, low energy switching interferences
(Burst) according to IEC EN 61000-4-4 up to 2 kV, and wide-banded, high energy overvolta-
ges (Surge) according to IEC EN 61000-4-5 up to 1 kV on a 48 VDC power supply circuit. The
interferences are discharged to earth.
Highest effectiveness can be achieved if the filter is installed directly at the 48 V power supply.
Connection 2.5 mm
2
directly on the device terminals,
combined wires on terminals of min. 10 mm
2
Height over mounting rail approx. 100 mm
Electric strength against earth 250 V
Max. permissible operation voltage 48 VAC / 60 VDC
Power consumption 3.0 mA at 48 VDC
Ambient conditions -25...+70 °C
Circuit diagram
Connecting example
with terminals on mounting rail
H 7021
Side view
Top view
Wires combined at the en
in wire end ferrules.
Connection lines
are part of delivery.
48 V
48 V
Feedin
48 VDC
H 7021