13
user guide (4)
Neutral
Fuse
(not supplied)
Live
A
B
1
2
Fuse
(not supplied)
L1
L2
L3
Contactors
(not supplied)
Neutral
L1
Neutral
L2
L3
A
B
1
2
Single phase wiring schematic
3 phase wiring schematic
Earth
Earth
Neutral
Earth
Immersion Heater
Earth
Live
Immersion Heater
Contactors
(not supplied)
Note:
The 2 external contactors must be approved
components certified for 10,000 cycles of
operation for the contactor controlled by the
thermostat and at least 30 for the contactor
controlled by the non-self-resetting thermal
cut-out.
Line terminal
marked L1
Earth
Neutral terminal
marked 'N'
Line terminal
marked L3
Typical head layout for a three phase heater
4
0
50
60 7
0
8
0
Line terminal
marked L2
Earth
Neutral terminal
marked 'N'
Live
marked ‘L’
Typical head layout for a single phase heater
4
0
50
60 7
0
8
0
Cut-Out Temperature 80°C
(Factorey set)
1
2
1 - 2 16A 240V ~
Thermal cut-out
1
2
1 - 2 20A 240V ~
Temperatur
e contr
ol
1
2
1 - 2 16A 240V ~
Thermal cut-out
1
2
1 - 2 20A 240V ~
Temperatur
e contr
ol
Wiring schematic
Figure 5: single phase wiring
Figure 6: three phase wiring
