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Connect the hardware
Connect power
It is recommended that you use an external IEC 61643-series certified surge protector with the
product. The surge protector should be rated for the operating voltage of the AC mains circuit that
powers the product and have a clamping voltage not exceeding 2500 V.
The device is intended to be connected to an AC power source that is separately protected by a
building branch circuit rated at 20A. Consult the local, state and federal codes and guidelines. The
device is rated for 105-277 VAC power, single phase. Connect power to the device using the AC wiring
terminal block shown in the figure.
Auxiliary power cable
The auxiliary power cable is designed to power a DIN rail mounted datalogger, RTU, or similar
industrial device. It supplies 24 VDC @ 500 mA (max) and comes with a 2 position terminal block
plug with 5mm pitch.
Digi Utility Communication Hub for TransPort® WR21 Installation Guide
Connect power
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