1
Introduction
The PSR650-A (JC492A) is a built-in power supply with AC input and
DC output while the PSR650-D (JC493A) is a built-in power supply
with DC input and DC output. These two power supply models can
transfer the input voltage into 12 V or 3.3 V needed by the device.
Table 1 Features of the PSR650-A and PSR650-D power
supplies
Feature Description
Protection
functions
Support input under-voltage protection,
output over-voltage protection, short-circuit
protection, and overheat protection
Hot swap support
Support hot swap while the device is in
operation
1+1 hot backup
support
Support 1 + 1 hot backup and current
sharing
CAUTION:
For a device that supports both AC and DC inputs, you can
choose either of the two types of power supplies as needed, but
do not use different types of power supplies in the same device.
