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NetShelter Rack ATS
Fifth Generation AP44xxA Series Automatic Transfer Switch
The APC NetShelter Rack Automatic
Transfer Switch (ATS) AP44xxA
series is the Fifth-Generation range
of high availability switches oering
greater control of your IT equipment
from Cloud to Edge.
With Industry leading reliability,
agility, and manageability the APC
NetShelter Rack ATS provides
redundant power to single-corded
equipment loads in the IT rack.
www.apc.com
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APC NetShelter Rack ATS - Intelligent & cyber-secure for
“Break Before Make”
Switching Sequence
SOURCE A
SOURCE B
OUTPUT
Input Relays
Output Relays
NOTE: Each relay block shown below represents two relays, each breaki ng individual lines (including neutral).
“Break Before Make”
Switching Sequence
SOURCE A
SOURCE B
OUTPUT
SOURCE A
SOURCE B
OUTPUT
Source A is providing power to the outlets, while Source B i s isolated from the system.
Input Relays
Output Relays
Input Relays
Output Relays
NOTE: Each relay block shown below represents two relays, each breaki ng individual lines (including neutral).
“Break Before Make”
Switching Sequence
SOURCE A
SOURCE B
OUTPUT
SOURCE A
SOURCE B
OUTPUT
SOURCE A
SOURCE B
OUTPUT
Source A is providing power to the outlets, while Source B i s isolated from the system.
Firmware detects that source A is out of the user specified tol erance range. The input power from Source A
is removed, then the output is disconnected. Thi s allows for out-of-phase switching and significantly reduces
the opportunity for relay welding.
Input Relays
Output Relays
Input Relays
Input Relays
Output Relays
Output Relays
NOTE: Each relay block shown below represents two relays, each breaki ng individual lines (including neutral).
seamless power switching
The APC NetShelter Rack Automatic Transfer Switch (ATS) AP44xxA series is the Fifth-Generation range of high availability
switches oering greater control of your IT equipment from Cloud to Edge. With Industry leading reliability, agility, and
manageability the APC NetShelter Rack ATS provides redundant power to single-corded equipment loads in the IT rack.
Key Features
MANAGEABILITYRELIABILITY
The Rack ATS has been upgraded with the Network Management Card 3 (NMC3) and various other technical advancements
for network port sharing, environmental monitoring, and enhanced security. The Rack ATS oers industry-leading transfer
time and improved outlet connections to ensure seamless power switching without interrupting the critical loads. Users can
access and congure Rack ATS through secure Web UI, SNMP, CLI and are fully compatible with EcoStruxure IT.
This includes a variety of input-output connections in 1 Phase 100/120V, 200/208V, or 230V to multiple outlets ranging from
1440VA to 7440VA allowing users to address the most common power distribution requirements.
Ride-through time & transfer time
• Ride through time is measured in miliseconds (ms) and it
is the length of time in which IT equipment can continue to
function during a complete loss of power.
• Driven by attempts to improve efficiency, ride-through could
be as low as 10-20ms.
• For systems with dual power supplies, increases the ride-
through time by as much as 50-100%.
• Since many datacenters have moved to double conversion
UPS, shorter cycle time has become the need of the hour.
Robust out-of-phase switching
• To prevent relay welding, both hot and neutral lines are
switched using a break-before-make system so there is
no cross-connection of sources, regardless of the phase
between sources.
• AC sources are isolated prior to switching outputs,
eliminating the chances of relays welding at contacts
• Sources can be up to 180 degrees out-of-phase
Break before Make switching sequence
Note: Each relay bloc k shown below represents two relays, each breaking indivi dual
lines (including neutral).
Source A is providing power to the outlets, while Source B is isolated f rom the system.
Firmware detect s that sourc e A is out of the user speci ed tolerance range. T he input
power fr om Source A is removed, t hen the out put is disco nnected. T his allows for out-
of-phase switching and signicantly reduces the opportunity for relay welding. Crucial
timing is controlled through the rmware (via rmware version 357 or greater).
Switching time <10ms
The transfer time from one source to the other is
seamless to the connected equipment, as the switching
occurs safely between the two input sources regardless
of any phase dierences.
Field-replaceable NMC
Integrated Network Management Card(NMC)/Display
Module can be replaced in the eld to minimize downtime
disruption in the unlikely event of a failure.
Temperature and humidity sensor support
Enables you to monitor temperature and humidity in your
Data Center or Network Closet.
Dual input power cords
Supplies power to the connected load from primary
and secondary power source i.e If among the two
independent sources, the primary source becomes
unavailable or out of congurable power range , the
Rack ATS will seamlessly switch to draw power from the
secondary source without interrupting critical loads.
2-years standard warranty and
5-years extended warranty
For peace of mind and use for years to come.
AGILITY
32 Rack ATS Network Port Sharing(NPS)
Connect and manage up to 32 Rack ATSs from one IP
address via one network connection to simplify and
speed deployment while saving the cost required in
having a dedicated network connection for each Rack
ATS .
Gigabit Ethernet Support
• Improved for today’s faster networks
& future-proofed for networks to
come.
• Supports faster Communication at
1 Gbps (Gigabit per second) over
Network.
• Enhance and standardize network connectivity across all
assets in the data center.
• Built-in network connectivity, which allows remote
management via Web User Interface (Web UI) its command
line interface (CLI) , Simple Network Management Protocol
(SNMP), or EcoStruxure Data Center Expert
LCES1 Mini NMC3 Network Management Card
• Color LCD display
• Remote monitoring and control of an
individual Rack ATS by connecting it
directly to the network
• New Rack ATSs utilize APC embedded Network
Management Card 3 (NMC3) with enhanced security
features including secured interfaces and a modied
password policy providing peace of mind.
EcoStruxure IT Ready
• Seamless integration of one or
many ATSs including alerts and control with EcoStruxure IT
• Allows IT and data center professionals to monitor and
manage all their critical IT infrastructure on-premise, in the
cloud, and at the edge from anywhere alarm notication in
the event of an issue.
• This curve indicates that power supplies should be able
to withstand 20ms of blackout without interruption in
function. The power supply “rides through” this outage
without issue.
• With this in mind, our current Rack ATS specication
of a maximum transfer time of 10ms would result in no
interruption.
2 3 Life Is On | APC by Schneider Electricapc.com
Relays are engaged and power is tr ansferre d to source B. Total transfe r time typically
is 8-12 ms.
Flash Upgradeable
Quickly and easily upgrade rmware via network
download for future product enhancements. Eliminates
the need to replace products already installed in the eld
when new features are released.
APC Wi-fi USB device support
Supports APC Wi- USB device for Cableless installation
& Setup
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Al arm st atus and tot al
Front panel overview
1 2 3 4 5 6 7 8 9
10 11 1213
141516
LCD Display screens:
The front panel LCD Display automatically rotates between four default screens.
• Press Home or Down to move through these screens manually.
• Press Select to go to the main menu or select menu items. Down allows
you to move through menu items and screens.
• After 30 seconds without activity, the LCD display will revert to the default
screens.
Alarm status and total load in Amps
Total: 10.1A
Default LCD display screens
Sou rce Sta tu s
Primary Source
Secondary Source
Primary Source
Secondary Source
A: 118 V, 60 HZ
B: 118 V, 60 HZ
Prefer red Source
So ur ce A
So ur ce B
None
Items Function
1
Preference A/B button
2
Source A and B LEDs
3
Input Connector LEDs
4
Output Connector LEDs
5
Output LED Shows that voltage is available at the output for the Rack ATS.
6
LCD Display View Rack ATS status, settings, and product information.
Display navigation
7
buttons
Load Status LED
8
(identifies overload and
warning conditions)
9
Console port Connect your computer to the Rack ATS for local access to the CLI. Use a Micro USB cable (not provided).
10
USB port Use USB drives for firmware upgrades.
10/100/1000 Status LED
11
(indicates network
status)
Press to set a preferred power source: the first press sets Source A, the second press sets Source B, and the third press sets
no preference.
Indicates preferred power source. If no source is preferred, both LEDs are illuminated. You can also see the Preferred Source
on the LCD Display.
Provides information about input voltage from each source. If the RMS input voltage and measured frequency are within the
selected tolerance range, the corresponding LED will be illuminated. In a normal operating condition (full source redundancy)
both sets of LEDs are illuminated.
Indicates which source is being used for the output (only one path will be illuminated at any time). Together, the Source
Preference LEDs, the Connector LEDs, and the Output LED show the power flow through the Rack ATS.
On the LCD Display, icons indicate the purpose of adjacent buttons.
Home: Press to move through monitor screens or return to monitor screens from sub-menus.
Down: Press to move through monitor screens or menu items.
Select: Press to select menu items or navigate to the main menu from monitor screens.
Solid Green: OK. No Overload (Critical) or Near Overload (Warning) alarms are present.
Solid Yellow: At least one near Overload (Warning) alarm is present, but no Overload (Critical) alarms are present.
Flashing Red: Overload. At least one Overload (Critical) alarm is present.
Solid Yellow: The Rack ATS is connected to a network operating at 10–100 Megabits per second (Mbps).
Solid Green: The Rack ATS is connected to a network operating at 1000 Mbps.
Flashing Yellow: The Rack ATS is receiving or transmitting data packets at 10–100 Mbps.
Flashing Green: The Rack ATS is receiving or transmitting data packets at 1000 Mbps.
Off: The Rack ATS is connected to an unknown network.
Solid Green: The Rack ATS has valid TCP/IP settings.
Flashing Green: The Rack ATS does not have valid TCP/IP settings.*
12
Network status LED
Solid Orange: A hardware failure has been detected in the Rack ATS.
Flashing Orange: The Rack ATS is making BOOTP requests.
Flashing orange and green (alternating): The Rack ATS is making DHCP requests.
* If you do not use a BOOTP or a DHCP server, see Local Access to the CLI, page , or Remote Access to the CLI, page 35 of User Guide to configure the TCP/IP settings.
13
Network Port Connects the Rack ATS to the network using a network cable (not provided).
14
Link A and Link B ports Reserved for future use.
15
Universal I/O
16
Reset switch Restarts the network and serial communication.
Port for connecting an optional APC Temperature Sensor (AP9335T) or an optional APC Temperature/ Humidity Sensor
(AP9335TH).
Bank 1 load
Bank 2 load
Total load
Blue: low load warning range
(only visible if configured)
Green: normal range
1
2
T
Red: overload rangeYellow: near overload range
Black line: load
load in Amps
Bank 1 Load
Bank 2 Load
Tot al Load
Note: Th e number of ba nks varies by m odel.
Total: 10.1A
1
2
T
SKUs congurations - Existing vs New
Here's a technical features comparision chart between the existing Rack ATS AP44xx series vs Fifth-Generation APC
Netshelter Rack ATS AP44xxA series.
1U
2U
Features Existing Rack ATS AP44xx series Fifth-Generation Rack ATS AP44xxA series
Temperature / Humidity Sensor support - √
32 Rack ATS Network Port Sharing - √
Flash upgradable - √
APC Wi-Fi USB device connectivity port - √
Gigabit Ethernet support - √
Color LCD Display - √
Network Management Card NMC2 Upgraded NMC3
Security Protocols √ Enhanced
Communicates with EcoStructure IT - √
Console Port - √
Link A and Link B ports - √
Universal I/O - √
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Technical specications
Features AP4421A AP4422A AP4423A
Input Voltage 230V 230V 230V 230V
Output Voltage 230V 230V 230V 230V
Voltage Tolerance ± 10% ± 10% ± 10% ± 10%
Rated Current 10A 16A 16A 32A
Frequency 50/60Hz 50/60Hz 50/60Hz 50/60Hz
Load Capacity 2000 VA 3840 VA 3700 VA 7400 VA
(Number of Inlet sockets)
Inlet Standard
(Number of Outlet sockets)
Outlet Standard
Number of Rack Unit 1U 1U 1U 2U
Dimension
(H x W x D)
Weight 3.93 kg 4.21 kg 3.74 kg 6.94 kg
(2) C14 (2) IEC 309 (2) C20 (2) IEC 309
(12) C13 (1) IEC 309 (8) C13, (1) C19 (16) C13, (2) C19
43.7 x 431.8 x 236.2 mm 43.7 x 431.8 x 236.2 mm 43.7 x 431.8 x 236.2 mm 88.1 x 431.8 x 236.2 mm
AP4424A
Features AP4430A AP4431A AP4432A
Input Voltage 200V, 208V 208V 200V, 208V 208V 208V
Output Voltage 200V, 208V 208V 200V, 208V 208V 208V
Voltage Tolerance ± 10% ± 10% ± 10% ± 10% ± 10%
Rated Current 20A 30A 30A
Regulatory Derated Input
Current (North America)
Frequency 50/60Hz 50/60Hz
Load Capacity 3300 VA 4992 VA 4992 VA 3300 VA 3300 VA
(Number of Inlet sockets)
Inlet Standard
(Number of Outlet sockets)
Outlet Standard
Number of Rack Unit 1U 2U 2U 1U 1U
Dimension
(H x W x D)
Weight 4.83 kg 6.49 kg 6.58 kg 3.74 kg 3.74 kg
43.7 x 431.8 x 236.2 mm 88.1 x 431.8 x236.2 mm 88.1 x 431.8 x236.2 mm 43.7 x 431.8 x 236.2 mm 43.7 x 431.8 x 236.2 mm
16A 24A 24A - -
50/60Hz 50/60Hz 50/60Hz
(2) NEMA L6-20P (2) L6-30P (2) NEMA L6-30P (2) C14 (2) C20
(8) C13, (1) C19
(1) NEMA L6-30R (16) C13, (2) C19 (12) C13 (8) C13, (1) C19
AP4433A
12A 20A
AP4434A
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Technical specications
Features AP4450A AP4452A AP4453A
Input Voltage 100V, 120V 120V 120V 100V 100V
Output Voltage 100V, 120V 120V 120V 100V 100V
Voltage Tolerance ± 10% ± 10% ± 10% ± 10% ± 10%
Rated Current 15A 20A 30A 15A 20A
Regulatory Derated Input
Current (North America)
Frequency 50/60Hz 50/60Hz 50/60Hz 50/60Hz 50/60Hz
Load Capacity 1440 VA 1920 VA 2880 VA 1440 VA 2000 VA
(Number of Inlet sockets)
Inlet Standard
(Number of Outlet sockets)
Outlet Standard
Number of Rack Unit 1U 1U 2U 1U 1U
Dimension
(H x W x D)
Weight 4.4 kg 4.4 kg 6.33 kg 4.4 kg 4.4 kg
43.7 x 431.8 x 236.2 mm 43.7 x 431.8 x 236.2 mm 88.1 x 431.8 x236.2 mm 43.7 x 431.8 x 236.2 mm 43.7 x 431.8 x 236.2 mm
12A 16A 24A - -
(2) NEMA 5-15P (2) NEMA L5-20P (2) NEMA L5-30P (2) NEMA 5-15P (2) NEMA L5-20P
(10) NEMA 5-15R (1) NEMA L6-30R (10) NEMA 5-20R (10) NEMA 5-15R (8) NEMA 5-15R
AP4450AJ
AP4452AJ
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Explore APC Solutions at
apc.com
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One Boston Place
Floor 27
Boston, MA 02108
United States
www.apc.com
July 202 2
©202 2 Schneider Electric. Al l Rights Reserved.
Schneider Electri c | Life Is On, AP C, NetShelter and EcoStruxure are tradem arks and the p ropert y of Schneide r Electric S E, its subsidi aries, and af filiated c ompanies.
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