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Transition Networks SISTF1010-150-LR(T) Industrial Unmanaged Switch
24-Hour Technical Support: 1-800-260-1312 International: 00-1-952-941-7600
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Connecting power to the Industrial Switch
Redundant
power inputs
The Industrial 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 Switch with power.
Figure 8: Redundant Power Connections
IMPORTANT
• Power is supplied through an external 12-48 VDC power source. Check the Technical
Specification section for details about the DC power input voltage.
• The Industrial 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 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 1
Power Input 2