User guide

BLACK BOX
®
Series Convenient Switches Installation and User Guide
36
3.6 Powering the LBH101A Series (DC internal) with 12V, 24V or –48VDC power
input
Some models (Hardened and extreme rated) of the LBH101A-Series are reliably
equipped with an internal DC power supply, and have built-in screw terminals for secure
attachment of the power
leads. Three models support a
range of power input types.
The three model choices are
for use with 12VDC, 24VDC
or -48VDC power. DC power input may be chosen for high-availability.
The extended temperature capability of the DC-powered hardened LBH101A’s
can go temperature uncontrolled environments, rated at –40`C to +75`C. If indoors, the DC
jack is also present and optionally can be used with an external AC power supply.