Specifications

Chapter 3: Installation
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3.6 Powering the LPH240A with –48VDC power input
Each LPH240A Switch is equipped with an internal DC power
supply, and has built-in screw terminals for secure attachment of the
power input leads. The three DC power input terminal block choices are
for use with -48VDC power. Where an AC power adaptor is used, DC is
supplied via the jack. Power input from the DC terminal block and the jack
may be connected simultaneously for power input redundancy.