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Transition Networks SISTP10xx-141-LR(T) Industrial PoE Switch
24-Hour Technical Support: 1-800-260-1312 International: 00-1-952-941-7600
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Connecting power to the Industrial PoE Switch
Redundant
power inputs
The Industrial PoE Switch has dual (redundant) power inputs capable of auto-sensing the
input voltage, while providing over current protection and reverse polarity protection.
The dual power inputs can be connected simultaneously to live DC power sources. See Figure
8. If one power source fails, the other live source acts as a backup, and automatically supplies
the Industrial PoE Switch with power.
Figure 8: Redundant Power Connections
IMPORTANT
• Power is supplied through an external 48 VDC power source. Check the Technical
Specification section for details about the DC power input voltage.
• The Industrial PoE Switch does not include a power switch; therefore, plugging a wired and
active terminal-block plug into its terminal block will immediately power ON the unit.
CAUTION
Before connecting the Industrial PoE Switch to a DC power source, ensure the power
source is stable.
CAUTION
This device is intended to be supplied by a listed power source marked LPS or Limited
Power Source, provided with a connector for field wiring terminal.
CAUTION
This device is designed for operation with a safety extra-low voltage (SELV) in
compliance with IEC950 / EN60950 / VDE0805 and in compliance with the low
voltage directive 73/23/EEC and 93/68/EEC.
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Power Input 2
Power Input 1