Hardware Manual for the PCD2.M5 Series│Document 26/856; Version EN 12│2014-07-24
Saia-Burgess Controls AG
Installation instructions and relay contacts
Annex
A-5
A
A.3
Installation instructions and relay contacts
A.3.1 Installation instructions for carrying extra-low voltage
On modules designed for low voltage (e.g. PCD3.A251), only voltages up to max.
50 V may be connected for safety reasons.
The safety standard covering the air and leakage current distances between neigh-
bouring channels is not satisfied by this module for higher voltages (50 … 250 V).
Note that all connections to the relay contacts on a module must be connected to
the same circuit, i.e. only one phase per module is permitted. Each load circuit may
however be fused individually.
A.3.2 Installation instructions for carrying low voltage
For reasons of safety it is not permissible to connect extra-low voltages (up to 50V)
and low voltages (50 …
250
V) to the same module.
If a PCD module is connected to a higher voltage (50 … 250 V), approved
components for this voltage must be used for all elements that are electrically
connected to the system.
Using higher voltage (50...250V), all connections to the relay contacts must be
connected on the same circuit, i.e. in such a way that they are all protected against
one AC phase by one common fuse. Each load circuit may however be fused
individually.
Examples:
PCD2.A200
L
N
Last
max. 10 A
max. 2 A