ABB Powernet EIB Manual De Instrucciones página 29

Fig. 4
CAUTION
The poling of terminal strip a and b must be uniform
(e.g., a1...a4= + and b1...b4 = – ).
It is imperative that the safety extra-low voltage and
the system voltage lines be laid separately.
The pair of safety extra-low voltage terminals (c, d)
(24 V ~, 50 Hz) has been provided twice.
b1
b2
b3
b4
c
d
230 V ~, 50 Hz
a1
a2
a3
a4
c
24 V ~, 50 Hz
d
N
L
GB