Specifications

T4
T4.10
GE Power Controls
Comfort Functions
Features
Photo 1 shows the front view of a 1 and 2 module
relay.
The main characteristics are printed in the upper
part of the device
1 . These are:
- Switching capacity
- Coil voltage
- Wiring diagram
- 6-digit ordering code.
Related to the switching capacity, only a 16A-family
exists.
As can be seen in chapter D, only certain combinations
of voltages, switching capacity and number of contacts
are available of the shelf. Other combinations are
available on request.
By means of the toggle on the front of the device
2 , the contacts can be forced to their energised
position.
The position of each contact is visualised
individually by means of a mechanical indicator
3 .
The function of the relay or the circuit that is
operated by the relay can be indicated behind the
circuit indicator
4 i.e. hall, living, garage, … .
The Pozidriv terminals
5 are clearly marked and are
all captive.
General remarks
- Using relays at low voltage, and especially when
several devices can be operated simultaneously,
ultimate care should be taken to the correct
dimensioning of the step-down transformer.
- When several adjacent relays are continuously
energised, the heat dissipation could irreversibly
damage those devices. To avoid this, a spacer
module should be installed between every second
and third device (type designation PLS SP).
Contax R
Relays
Function
Relays are electromechanically controlled switches
used to control single or multi-phase low to medium
power loads while the control itself can be (very)
low power.
Also, relays are often used as interfaces to obtain
galvanic separation.
Typical applications are given in figure 1 and 2.
Operation
As long as the control circuit (coil) is energised, the
NO-contacts of the relay are closed and the NC-
contacts are opened. From the moment the control
circuit is de-energised again, the contacts return to
their rest position. NO-contacts are opened and
NC-contacts are closed.
fig.1 Start-stop of lamp-load with relay
fig.2 Relay as interface between field and PLC
photo 1
1
2
4
5
5
4
3