Technical data
11
Rated Tripping Current Matching
Matching of the rated tripping current, 0.1 or 0.3 A, is achieved by the number of turns in the primary winding of the transformer (in PFR2-
03-S/A, PFR3-03-S/A, PFR2-03-U and PFR3-03-U).
Impulse Contact Control
1234
AE
PMA
P
T
R
P
L1
Netz
L2 L3 N
Erdung
Verbraucher
Schütz
Druckknopf-
steuerung
Durchsteck-
wandler
Z-WFR
16 14
PFR
1
2
13 14 15 16
3
4
15
13
Continuous Contact Control
L1
Netz
PFR
L2 L3 N
Erdung
Verbraucher
Schütz
Schaltuhr,
Thermostat etc.
Durchsteck-
wandler
Z-WFR
1
2
13
1
14
2
15
3
16
4
3
4
15
13
16 14
AE
PMA
P
T
R
P
Line voltage
Line voltage
Core balance
transformer
Z-WFR
Core balance
transformer
Z-WFR
Contactor Contactor
Pushbutton
control
Timer, thermostat,
etc.
Consumer
Consumer
Earth
Earth
Two possible switching examples.
Attention: • Connect terminals 1-4 of the relay to the terminals 1-4 of the transformer (see switching examples)!
1+2: secondary winding; 3+4: test winding
• Supply terminals 13 and 15 as shown, so that the test circuit can work correkt!
Protective Devices
Important Information for Installation
All lines required for operation, L1, L2, and L3 including neutral N, must be routed through the transformer as follows:
Insulated lines must be laid bunched
Copper rails
Maximum distance d between copper rails 10 mm
Residual Current Rated tripping Number of Maximum cable Maximum
Relay Transformer current I
ΔN
(A) primary turns diameter (mm) primary current (A)
PFR2-03-U (S/A) Z-WFR2 0,1 3 60 150
0,3 1 60 400
PFR3-03-U (S/A) Z-WFR3 0,1 3 130 65
0,3 1 130 400
PFR2-1-U (S/A) Z-WFR2 1,0 1 60 400
PFR3-1-U (S/A) Z-WFR3 1,0 1 130 400