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Installing the Device

2.6Connecting Power

2.6 Connecting Power

The RUGGEDCOM RSG907R features two input terminals that allow the device to be

• Up to one independent AC and one independent DC power source

• Two independent DC power sources

NOTICE

Electrical hazard – risk of power disruption

Due to power supply safety features, some AC voltage will be coupled to the

redundant power terminals (between the positive/live and chassis/ground terminals,

and between the neutral and chassis/ground terminals). While the maximum

amount of current transfer is below the safety threshold, it may be enough to trip

some external Ground Fault Circuit Interrupter (GFCI) breakers. Before connecting

power, review the installation and make sure this condition can be supported.

Note

• For 110/230 VAC rated equipment, an appropriately rated AC circuit breaker

must be installed.

• For 125/250 VDC rated equipment, an appropriately rated DC circuit breaker

must be installed.

• Use minimum #16 gage copper wiring when connecting terminal blocks.

• Equipment must be installed according to applicable local wiring codes and

standards.

2.6.1 Connecting AC or DC Power

The device features dual power supply inputs to allow for redundant connections to

separate, independent AC or DC power supplies. Each power supply terminal block

provides reverse polarity protection.

To connect an external AC or DC power source to the device, do the following:

Note

For examples of the supported wiring configurations, refer to "Wiring Examples (Page

16)".

WARNING

Electrocution hazard – risk of personal injury

When only one AC power source is connected to the device, the redundant power

terminals (between the positive/live and chassis/ground terminals, and between the

neutral and chassis/ground terminals) are energized. To prevent contact with the

terminals and avoid an electrical shock, do the following when one AC power source

is connected to the device:

RUGGEDCOM RSG907R

Installation Manual, 02/2021, C79000-G8976-1387-12

Siemens RUGGEDCOM RSG907R User Manual

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