WIKA 851 - Manual (Page 9)

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.