WIKA 821 User Manual

WIKA operating instructions magnetic snap-action contact model 821
GB
10
2003325.03 03/2011 GB/D/F/E
4. Overcurrent protectors
4. Overcurrent protectors
The instruments do not provide for incorporated overcurrent protectors.
Should protectors be required, we recommend the following values in
accordance with EN 60947-5-1.
Table 3a: Overcurrent protectors with magnetic snap-action contact
Table 3b: Overcurrent protectors with sliding contact
Voltage
Magnetic snap-action contact model 821
Switch version S
1)
Switch version L
1)
V
Nominal size of instrument
63
100 160
Nominal size of instrument
63
100 160
24 1 A 2 A 2 A 0.63 A
1 A 1 A
250
0.63 A
1 A 1 A 0.315 A
0.63 A 0.63 A
Voltage
Sliding contact model 811
Switch version S
1)
Switch version L
1)
V
Nominal size of instrument
63
100 160
Nominal size of instrument
63
100 160
24 0.63 A
1 A 1 A 0.315 A
0.63 A 0.63 A
250
0.125 A
0.315 A 0.315 A 0.063 A
0.125 A 0.125 A
All data refer to miniature fuses M and a maximum short circuit current
of 100 A.
1) see chapter "5. Allocation of switch version to basic instruments and measuring ranges".

WIKA 821 Specifications

General

Brand	WIKA
Model	821
Category	Measuring Instruments
Language	English