WIKA operating instructions magnetic snap-action contact model 821
9
GB
2003325.03 03/2011 GB/D/F/E
Voltage
(DIN IEC 38)
Magnetic snap-action contact model 821
dry gauges
filled gauges
DC / AC
V
resistive
load
DC
mA
AC
mA
inductive
load
cos ϕ >0.7
mA
resistive
load
DC
mA
AC
mA
inductive
load
cos ϕ >0.7
mA
230
100
120
65
65
90
40
110
200
240
130
130
180
85
48
300
450
200
190
330
130
24
400
600
250
250
450
150
Table 2a: Recommended contact rating for the magnetic snap-action
contact model 821
3. Specifications
Voltage
(DIN IEC 38)
Sliding contact model 811
dry gauges
DC / AC
V
resistive load
DC
mA
AC
mA
inductive load
cos ϕ >0.7
mA
230
40
45
25
110
80
90
45
48
120
170
70
24
200
350
100
Table 2a: Recommended contact rating for the sliding contact model 811
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.