Phoenix Contact 1144175, User Manual, Page: 20 / 40

FL SWITCH EP74…
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PHOENIX CONTACT 4083_en_A
4.5 Connections
Voltage supply conductors are connected directly to the rear of the switch, not the power
supply modules.
WARNING:
Ensure the voltage supply is turned off before connecting the voltage supply conduc-
tors to the terminals on the switch.
Disconnect all power sources. Device may have multiple power sources.
Ensure the supplied terminal block cover is installed before reapplying power.
NOTE:
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
(+/L) (-/N)
PWR 1 PWR2
Alarm Relay
24VDC, 1A
Options
(+/L) (-/N)
NO NC C
HV Specs: 100-240 VAC, 1A, 50/60Hz, 100-240 VDC, 1A
MV Specs: 48 VDC, 1.25A
LV Specs: 24 VDC, 2.5A
Do not connect AC power cables to the FL SWITCH EP7400-PS-MV or FL SWITCH
EP7400-PS-LV modules. Discard and replace modules if this occurs.
Figure 4-5 Terminal block connections
4.5.1 AC power
1 3 5 7 9 11 13 15
2 4 6 8 10 12 14 16
NO
PE PE PE
L N NC L
AC
N
AC
L = Line
N = Neutral
PE = Protective earth
NO = Normally open
NC = Normally closed
Figure 4-6 AC power connections
For 100-240 V AC rated equipment, protection for earth fault is provided by a 20 A maximum
branch circuit from AC input in the building installation. The protection in the building instal-
lation is relied upon for short-circuit backup protection.
– The specification for AC breaker is 5 A, 2P, 277 V AC (min) circuit breaker, thermomag-
netic or equivalent type.
– The plug connector and wire gauge sizing is to be selected with appropriate design as
per the electrical code for a 60 W, 1-phase device.
All equipment must be installed according to applicable local wiring codes and standards.