WIKA RLS-1000 Mode D'emploi page 15

5. Commissioning, operation
Connection with inductive load
With inductive loads, the float switches should be protected by
connection to an RC element or a free-wheeling diode.
AC voltage
S1
R
AC 24 ... 230 V
C
Protective RC elements
Depending on the operating voltage, use RC elements exclusively in
accordance with the table below. RC elements other than those specified
here will lead to the destruction of the reed switch.
RC elements for reed contacts 10 ... 40 VA
Voltage Resistance
AC 24 V 100 Ω
220 Ω
AC 48 V
AC 115 V 470 Ω
AC 230 V 1,500 Ω
RC elements for reed contacts 40 ... 100 VA
Voltage Resistance
AC 24 V 47 Ω
AC 48 V 100 Ω
AC 115 V 470 Ω
AC 230 V 1,000 Ω
WIKA operating instructions models RLS
DC voltage
+
RC element,
DC 24 ... 230 V
see table
–
Capacitance
0.33 μF
0.33 μF
0.33 μF
0.33 μF
Capacitance
0.33 μF
0.33 μF
0.33 μF
0.33 μF
S1
Type of RC element
A 3/24
A 3/48
A 3/115
A 3/230
Type of RC element
B 3/24
B 3/48
B 3/115
B 3/230
EN
Free-
wheeling
diode, e.g.
1N4007
15