WIKA 821 Serie Manual De Instrucciones página 9

3. Specifications
Table 2a: Recommended contact rating for the magnetic snap-action
contact model 821
Voltage Magnetic snap-action contact model 821
dry gauges
(DIN IEC 38)
DC / AC resistive
load
DC
V mA
230 100
110 200
48 300
24
400
Table 2a: Recommended contact rating for the sliding contact model 811
Voltage
Sliding contact model 811
dry gauges
(DIN IEC 38)
DC / AC resistive load
DC
V mA
230 40
110 80
48 120
24
200
The switching current must not be less than 20 mA with low
voltages for switching reliability reasons. For higher loads,
and instruments with liquid-filled cases, we recommend
using WIKA contact protection relays, models 905.1x.
The ingress protection to EN 60529 against external influences depends
on the basic instrument and is found in the respective data sheet.
The limit switches can be used in the range from -20 to +70 °C. Where
the permissible temperatures for the basic instrument (see data sheet)
deviate from this range, the lower values are valid.
For further specifications see the corresponding WIKA data sheet and
the order documentation.
WIKA operating instructions magnetic snap-action contact model 821
inductive
load
AC cos ϕ >0.7
mA mA
120 65
240 130
450 200
600 250
AC
mA
45
90
170
350
filled gauges
resistive
load
DC AC
mA mA
65 90
130 180
190 330
250 450
inductive load
cos ϕ >0.7
mA
25
45
70
100
GB
inductive
load
cos ϕ >0.7
mA
40
85
130
150
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