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7. Input Circuit Breaker: Protection from AC overload and short circuit.
8. USB Port: High speed 2.0 Standard USB Type B Peripheral Communication Port used to establish control and
monitoring with UPSMON software.
9. COMM PORT: Communication card slot.
COMM CARDS: SDUCFRELAYCARD and SDUENETIPCARD NETWORK COMM CARD can be purchased
separately.
The UPS can detect the presence of a COMM CARD and identify what kind of COMM CARD is inserted.
USB communication will have precedence over COMM CARDS.
10. REMOTE ON/OFF TERMINALS: Use a switch to remotely toggle ON/OFF state. Non-Polarized terminals.
No external voltage is required. We recommend using stranded UTP (Unshielded Twisted Pair) wire for
connections.
WARNING
!
Remote ON/OFF is grounded to the UPS internal signal ground so it should be isolated from the
chassis ground to prevent any ground potentials that may cause a unit malfunction or damage. In
addition, isolate the Remote ON/OFF wiring away from high current, high voltage, and high frequency
components to prevent any magnetically coupled noise on the Remote On/Off connections.
Screw
Insulation Withstands Volts
Preferred AWG
Screw Torque
Catalog Number
SDU AC - A SERIES
M3.0; Current rating = 30 A, AC 300 V
Ac 2000 V min.
10–18 AWG
9 lb-in (101.68 N-cm)
Screw Terminals Description
Dimensions in Inches (Millimeters)
H
4.87 (123.7)
Figure 5: Product Dimensions
A272-290 Rev. 5 07/2018
W
11.10 (281.9)
SDU AC-A Series
D
4.81 (122.3)
Page: 7
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