Chapter 3: Installation
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Page 36
3.5
Power Requirements for LBH21-Series Switches
LBH21-Series Switches are power-efficient and can work with
an external AC power supply. LBH21-Series require a 12VDC input
power supply.
The 12V DC power input has a plug of 2.5mm, ve , with
6 ft. cord. All the AC power supply info detail is provided in Technical
Specifications Section 1.1.
LBH21-Series switches are designed to be used with UL listed
Class II power supplies. The converter switches provide reliable
operation, withstand higher temperature environments, and provide the
DC power choices to the user to deploy in uncontrolled temperature
environments.
The Direct DC (Internal) 12V DC (8 – 15V DC) has a built-in
terminal block for +, -, ground. The 9V DC jack is also present. Detailed
information about the 12 VDC, the 24V DC and the -48V DC is provided
in the Technical Specifications Section 1.1.
Various models of DC power type and extended ambient
temperature power supplies are available. Specify the power supply
needed on your order.
Note: When connected to a -48 V centralized dc source these
products are to be installed only in Restricted Access Areas (dedicated
equipment rooms, electrical closets or the like).
