Siemens SCALANCE X-300 Series Operating Instructions Manual page 191

Overcurrent protection of the power supply
Non-replaceable fuse
Redundant power supply unit
Redundant power supply possible
Table 8-73
Voltage via signaling contact
Switching capacity (resistive load)
Resistor between F1-F2
Table 8-74
Power supply
Signaling contact
Table 8-75
PoE function within a power supply system
Method of PoE power feed
Reserved power per port
Overall power on all 4 ports
Table 8-76
Between the ports
Between ports and ground
Between ports and 24 VDC power input
Table 8-77
Pin number / wire
SCALANCE X-300
Operating Instructions, 11/2019, A5E01113043-24
Electrical data: Signaling contact
Plug-in terminal block for connectors of the power supply and signaling contact
Power over Ethernet at port P1, P2, P3, P4
Electrical isolation
Pin assignment of the Ethernet ports of the SCALANCE PoE switch
Assignment for data transmis‐
1)
sion
Pin 1
Pin 2
Pin 3
Pin 4
8.7 X-300M PoE technical specifications
3 A / 32 V and
5 A / 125 V (PoE)
No
Yes
24 VDC
max. 100 mA
< 8 Ω
1 x 4-pin male connector
1 x 2-pin male connector
According to IEEE 802.3af / 802.3at (type 1) for
environment A
Alternative A
(refer to the following table for the pin assignment)
15.4 W at port,
of which the following can be used by the PD:
12.95 W
Max. 30.8 W
No
Yes
Yes
Assignment for power transfer
(PoE).
Alternative A (MDI-X)
RX+
RX-
TX+
-
Technical specifications
V-
V-
V+
-
191