(Revised 4-9-2013) NT24k Managed Industrial Ethernet Switch User Manual & Installation Guide Page 20 of 132
APPLYING POWER AND FAULT CONNECTIONS (Back View)
All NT24k can operate with one power supply, either AC or DC. The Rack Mount NT24k can accept up to
two power supply units. Each power supply can be AC or DC. Each low voltage DC Power supply includes
redundancy (two DC supplies).
The example below is shown from the back and includes a AC Power supply on the left and a DC
power supply on the right, looking from the back:
NT24k with DC Power Supply Installed:
Unscrew & Remove the DC Voltage Input
Plug from the Power Input Header
Install the DC Power Cables into the Plug
(observing polarity).
Plug the Voltage Input Plug back into the
Power Input Header.
Tightening torque for the terminal block
power plug is
0.5 Nm/0.368 Pound Foot.
Verify the Power LED stays ON.
Notes:
When a DC Power supply is installed, only one power supply must be connected to power for
minimal operation. For redundant power operation, V
1
and V
2
inputs must be connected to separate
DC Voltage sources. This device will draw current from both sources simultaneously. Use 16-28
gauge wire when connecting to the power supply.
Recommended 24V DC Power Supplies, similar to: N-Tron’s P/N
NTPS-24-1.5
Input AC 115/230V
Output DC 24-28V
Output Current 1.5A @ 24V
1.0A @ 28V
Power 36W
35 mm DIN-Rail Mountable
Dimensions: 45X75X91 mm
