Connecting The 100 To 240 V Ac Power Supply - Siemens SCALANCE XR-300M Compact Operating Instructions

Follow the steps below to fit the connector to a two-wire cable:
1. Connect the cable to the terminal block. Strip the cable jacket only as far as necessary to be
able to strip the insulation and connect up the wires.
2. Feed the supplied cable tie through the two openings in the lower part of the housing as
shown in the figure.
3. Insert the terminal block with the connected cable in the lower part of the housing and tighten
the cable tie. The cable must be securely held in the lower part of the housing by the cable
tie. Cut off the excess cable tie.
4. Fit the upper part of the housing. The housing is correctly mounted when the two catches
audibly click into place and are flush with the surface of the housing.
6.7.2.3

Connecting the 100 to 240 V AC power supply

Connecting to the power supply
The cable outlet is at the front or rear depending on the device type. The power supply is
connected using a 2-pin plug-in terminal block.
NOTICE
Torque 0.6 Nm
Tighten the threaded joint of the connector with a torque of 0.6 Nm (5.3 lbs-in).
Terminal block assignment (2-pin)
Pin number
Pin 1
Pin 2
To wire up the power connector, use a copper cable of category 18-12 AWG or cable with a
cross-section of 0.75 to 2.5 mm².
SCALANCE XR-300M
Compact Operating Instructions, 11/2019, A5E02661171-15
Assignment
L1 (100 to 240 VAC)
N
Connecting up
6.7 Power supply
Labeling
55