AWK-3251A-RCC Series

Wi-Fi 5 (802.11ac) railway onboard IP30 wireless AP/clients

moxa-awk-3251a-rcc-series-image-1-(1).jpg | Moxa

moxa-awk-3251a-rcc-series-image-2-(1).jpg | Moxa

Features and Benefits

Concurrent dual-band Wi-Fi with aggregated data rates up to 1.267 Gbps
Supports up to 120 concurrent device connections and client isolation
Wireless inter-carriage connections with Auto Carriage Connection (ACC)
Seamless data offloading with sub-150 ms client-based Turbo Roaming

Certifications

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Introduction

The AWK-3251A-RCC Series is a range of IP30-rated Wi-Fi 5 (802.11ac) AP/clients designed for railway onboard use, providing a reliable solution for dedicated applications such as inter-carriage backbone networks and onboard passenger infotainment systems. The Auto Carriage Connection (ACC) feature simplifies deployment and enhances the reliability of wireless carriage backbone networks. Optimized for passenger Wi-Fi services, the AWK-3251A-RCC Series supports concurrent 2.4/5 GHz dual-band connectivity, up to 120 client connections, and data rates of up to 1.267 Gbps. In addition, the AWK-3251A-RCC Series can be powered via PoE for easier installation and flexible deployment.

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WLAN Standards

2.4 GHz: 802.11b/g/n with 256 QAM support
5 GHz: 802.11a/n/ac Wave 2 with 256 QAM support
Frequency Band for US (20 MHz operating channels)

AWK-3251A-RCC-US models only:
2.412 to 2.462 GHz (11 channels)
5.180 to 5.240 GHz (4 channels)
5.260 to 5.320 GHz (4 channels) DFS (Dynamic Frequency Selection) channel support: In AP mode, when a radar signal is detected, the device will automatically switch to another channel. However, according to regulations, after switching channels, a 60-second availability check period is required before starting the service.
5.500 to 5.700 GHz (11 channels) DFS (Dynamic Frequency Selection) channel support: In AP mode, when a radar signal is detected, the device will automatically switch to another channel. However, according to regulations, after switching channels, a 60-second availability check period is required before starting the service.
5.745 to 5.825 GHz (5 channels)
Frequency Band for UN (20 MHz operating channels)

AWK-3251A-RCC-UN models only:
2.412 to 2.472 GHz (13 channels)
5.180 to 5.240 GHz (4 channels)
5.260 to 5.320 GHz (4 channels) DFS (Dynamic Frequency Selection) channel support: In AP mode, when a radar signal is detected, the device will automatically switch to another channel. However, according to regulations, after switching channels, a 60-second availability check period is required before starting the service.
5.500 to 5.700 GHz (11 channels) DFS (Dynamic Frequency Selection) channel support: In AP mode, when a radar signal is detected, the device will automatically switch to another channel. However, according to regulations, after switching channels, a 60-second availability check period is required before starting the service.
5.745 to 5.825 GHz (5 channels)
Available channels change depending on the selected country or region code.
Wireless Security

WEP encryption (64-bit and 128-bit)
WPA/WPA2/WPA3-Enterprise (IEEE 802.1X/RADIUS, TKIP, AES)
WPA/WPA2/WPA3-Personal
Transmission Rate

2.4 GHz:
802.11b: 1 to 11 Mbps
802.11g: 6 to 54 Mbps
802.11n: 6.5 to 300 Mbps

5 GHz:
802.11a: 6 to 54 Mbps
802.11n: 6.5 to 300 Mbps
802.11ac: 6.5 to 867 Mbps
Transmitter Power for 802.11a

22±1.5 dBm @ 6 Mbps
22±1.5 dBm @ 9 Mbps
22±1.5 dBm @ 12 Mbps
20.5±1.5 dBm @ 18 Mbps
20.5±1.5 dBm @ 24 Mbps
20.5±1.5 dBm @ 36 Mbps
20±1.5 dBm @ 48 Mbps
20±1.5 dBm @ 54 Mbps
Transmitter Power for 802.11n (5 GHz)

22±1.5 dBm @ MCS0 20 MHz
22±1.5 dBm @ MCS1 20 MHz
22±1.5 dBm @ MCS2 20 MHz
20±1.5 dBm @ MCS3 20 MHz
19.5±1.5 dBm @ MCS4 20 MHz
19.5±1.5 dBm @ MCS5 20 MHz
19.5±1.5 dBm @ MCS6 20 MHz
19±1.5 dBm @ MCS7 20 MHz
22±1.5 dBm @ MCS8 20 MHz
22±1.5 dBm @ MCS9 20 MHz
22±1.5 dBm @ MCS10 20 MHz
20±1.5 dBm @ MCS11 20 MHz
19.5±1.5 dBm @ MCS12 20 MHz
19.5±1.5 dBm @ MCS13 20 MHz
19.5±1.5 dBm @ MCS14 20 MHz
19±1.5 dBm @ MCS15 20 MHz
21±1.5 dBm @ MCS0 40 MHz
21±1.5 dBm @ MCS1 40 MHz
21±1.5 dBm @ MCS2 40 MHz
19.5±1.5 dBm @ MCS3 40 MHz
19±1.5 dBm @ MCS4 40 MHz
19±1.5 dBm @ MCS5 40 MHz
19.5±1.5 dBm @ MCS6 40 MHz
19±1.5 dBm @ MCS7 40 MHz
21±1.5 dBm @ MCS8 40 MHz
21±1.5 dBm @ MCS9 40 MHz
21±1.5 dBm @ MCS10 40 MHz
19.5±1.5 dBm @ MCS11 40 MHz
19±1.5 dBm @ MCS12 40 MHz
19±1.5 dBm @ MCS13 40 MHz
19±1.5 dBm @ MCS14 40 MHz
19±1.5 dBm @ MCS15 40 MHz
Transmitter Power for 802.11ac (5 GHz, Dual Chain)

21.5±1.5 dBm @ MCS0 20 MHz
21.5±1.5 dBm @ MCS1 20 MHz
21±1.5 dBm @ MCS2 20 MHz
20±1.5 dBm @ MCS3 20 MHz
19.5±1.5 dBm @ MCS4 20 MHz
19.5±1.5 dBm @ MCS5 20 MHz
19.5±1.5 dBm @ MCS6 20 MHz
19±1.5 dBm @ MCS7 20 MHz
19±1.5 dBm @ MCS8 20 MHz
21±1.5 dBm @ MCS0 40 MHz
21±1.5 dBm @ MCS1 40 MHz
21±1.5 dBm @ MCS2 40 MHz
19.5±1.5 dBm @ MCS3 40 MHz
19±1.5 dBm @ MCS4 40 MHz
19±1.5 dBm @ MCS5 40 MHz
19±1.5 dBm @ MCS6 40 MHz
19±1.5 dBm @ MCS7 40 MHz
18.5±1.5 dBm @ MCS8 40 MHz
18±1.5 dBm @ MCS9 40 MHz
20±1.5 dBm @ MCS0 80 MHz
20±1.5 dBm @ MCS1 80 MHz
20±1.5 dBm @ MCS2 80 MHz
17±1.5 dBm @ MCS3 80 MHz
17±1.5 dBm @ MCS4 80 MHz
17±1.5 dBm @ MCS5 80 MHz
17±1.5 dBm @ MCS6 80 MHz
17±1.5 dBm @ MCS7 80 MHz
17±1.5 dBm @ MCS8 80 MHz
17±1.5 dBm @ MCS9 80 MHz
Transmitter Power for 802.11b

25.5±1.5 dBm @ 1 Mbps
25.5±1.5 dBm @ 2 Mbps
26±1.5 dBm @ 5.5 Mbps
26±1.5 dBm @ 11 Mbps
Transmitter Power for 802.11g

26±1.5 dBm @ 6 Mbps
26±1.5 dBm @ 9 Mbps
26±1.5 dBm @ 12 Mbps
25±1.5 dBm @ 18 Mbps
25±1.5 dBm @ 24 Mbps
24.5±1.5 dBm @ 36 Mbps
23.5±1.5 dBm @ 48 Mbps
23±1.5 dBm @ 54 Mbps
Transmitter Power for 802.11n (2.4 GHz)

24.5±1.5 dBm @ MCS0 20 MHz
24.5±1.5 dBm @ MCS1 20 MHz
24±1.5 dBm @ MCS2 20 MHz
24±1.5 dBm @ MCS3 20 MHz
23.5±1.5 dBm @ MCS4 20 MHz
23.5±1.5 dBm @ MCS5 20 MHz
22.5±1.5 dBm @ MCS6 20 MHz
22±1.5 dBm @ MCS7 20 MHz
24±1.5 dBm @ MCS8 20 MHz
24.5±1.5 dBm @ MCS9 20 MHz
24±1.5 dBm @ MCS10 20 MHz
24±1.5 dBm @ MCS11 20 MHz
23.5±1.5 dBm @ MCS12 20 MHz
23±1.5 dBm @ MCS13 20 MHz
22±1.5 dBm @ MCS14 20 MHz
21.5±1.5 dBm @ MCS15 20 MHz
24±1.5 dBm @ MCS0 40 MHz
24±1.5 dBm @ MCS1 40 MHz
24±1.5 dBm @ MCS2 40 MHz
24±1.5 dBm @ MCS3 40 MHz
23.5±1.5 dBm @ MCS4 40 MHz
23.5±1.5 dBm @ MCS5 40 MHz
22.5±1.5 dBm @ MCS6 40 MHz
22±1.5 dBm @ MCS7 40 MHz
24±1.5 dBm @ MCS8 40 MHz
24±1.5 dBm @ MCS9 40 MHz
24±1.5 dBm @ MCS10 40 MHz
24±1.5 dBm @ MCS11 40 MHz
23.5±1.5 dBm @ MCS12 40 MHz
23±1.5 dBm @ MCS13 40 MHz
22.5±1.5 dBm @ MCS14 40 MHz
21.5±1.5 dBm @ MCS15 40 MHz
Transmitter Power for 802.11ac (2.4 GHz, Dual Chain)

25±1.5 dBm @ MCS0 20 MHz
25±1.5 dBm @ MCS1 20 MHz
25±1.5 dBm @ MCS2 20 MHz
25±1.5 dBm @ MCS3 20 MHz
24±1.5 dBm @ MCS4 20 MHz
23.5±1.5 dBm @ MCS5 20 MHz
22.5±1.5 dBm @ MCS6 20 MHz
22±1.5 dBm @ MCS7 20 MHz
21.5±1.5 dBm @ MCS8 20 MHz
25±1.5 dBm @ MCS0 40 MHz
25±1.5 dBm @ MCS1 40 MHz
25±1.5 dBm @ MCS2 40 MHz
25±1.5 dBm @ MCS3 40 MHz
24±1.5 dBm @ MCS4 40 MHz
23.5±1.5 dBm @ MCS5 40 MHz
22.5±1.5 dBm @ MCS6 40 MHz
22±1.5 dBm @ MCS7 40 MHz
21.5±1.5 dBm @ MCS8 40 MHz
21±1.5 dBm @ MCS9 40 MHz
Receiver Sensitivity for 802.11a (measured at 5.680 GHz)

Typ. -88 @ 6 Mbps
Typ. -88 @ 9 Mbps
Typ. -85 @ 12 Mbps
Typ. -84 @ 18 Mbps
Typ. -81 @ 24 Mbps
Typ. -77 @ 36 Mbps
Typ. -74 @ 48 Mbps
Typ. -72 @ 54 Mbps
Receiver Sensitivity for 802.11n (5 GHz; measured at 5.680 GHz)

Typ. -88 dBm @ MCS0 20 MHz
Typ. -84 dBm @ MCS1 20 MHz
Typ. -83 dBm @ MCS2 20 MHz
Typ. -80 dBm @ MCS3 20 MHz
Typ. -76 dBm @ MCS4 20 MHz
Typ. -72 dBm @ MCS5 20 MHz
Typ. -70 dBm @ MCS6 20 MHz
Typ. -68 dBm @ MCS7 20 MHz
Typ. -89 dBm @ MCS8 20 MHz
Typ. -87 dBm @ MCS9 20 MHz
Typ. -85 dBm @ MCS10 20 MHz
Typ. -81 dBm @ MCS11 20 MHz
Typ. -78 dBm @ MCS12 20 MHz
Typ. -74 dBm @ MCS13 20 MHz
Typ. -73 dBm @ MCS14 20 MHz
Typ. -71 dBm @ MCS15 20 MHz
Typ. -85 dBm @ MCS0 40 MHz
Typ. -82 dBm @ MCS1 40 MHz
Typ. -79 dBm @ MCS2 40 MHz
Typ. -77 dBm @ MCS3 40 MHz
Typ. -73 dBm @ MCS4 40 MHz
Typ. -69 dBm @ MCS5 40 MHz
Typ. -68 dBm @ MCS6 40 MHz
Typ. -66 dBm @ MCS7 40 MHz
Typ. -87 dBm @ MCS8 40 MHz
Typ. -84 dBm @ MCS9 40 MHz
Typ. -82 dBm @ MCS10 40 MHz
Typ. -79 dBm @ MCS11 40 MHz
Typ. -75 dBm @ MCS12 40 MHz
Typ. -72 dBm @ MCS13 40 MHz
Typ. -70 dBm @ MCS14 40 MHz
Typ. -69 dBm @ MCS15 40 MHz
Receiver Sensitivity for 802.11ac (5 GHz, Dual Chain)

Typ. -89 dBm @ MCS0 20 MHz
Typ. -86 dBm @ MCS1 20 MHz
Typ. -84 dBm @ MCS2 20 MHz
Typ. -81 dBm @ MCS3 20 MHz
Typ. -78 dBm @ MCS4 20 MHz
Typ. -74 dBm @ MCS5 20 MHz
Typ. -72 dBm @ MCS6 20 MHz
Typ. -71 dBm @ MCS7 20 MHz
Typ. -67 dBm @ MCS8 20 MHz
Typ. -86 dBm @ MCS0 40 MHz
Typ. -84 dBm @ MCS1 40 MHz
Typ. -81 dBm @ MCS2 40 MHz
Typ. -78 dBm @ MCS3 40 MHz
Typ. -75 dBm @ MCS4 40 MHz
Typ. -71 dBm @ MCS5 40 MHz
Typ. -70 dBm @ MCS6 40 MHz
Typ. -69 dBm @ MCS7 40 MHz
Typ. -64 dBm @ MCS8 40 MHz
Typ. -63 dBm @ MCS9 40 MHz
Typ. -84 dBm @ MCS0 80 MHz
Typ. -81 dBm @ MCS1 80 MHz
Typ. -79 dBm @ MCS2 80 MHz
Typ. -76 dBm @ MCS3 80 MHz
Typ. -73 dBm @ MCS4 80 MHz
Typ. -69 dBm @ MCS5 80 MHz
Typ. -67 dBm @ MCS6 80 MHz
Typ. -65 dBm @ MCS7 80 MHz
Typ. -61 dBm @ MCS8 80 MHz
Typ. -60 dBm @ MCS9 80 MHz
Receiver Sensitivity for 802.11b (measured at 2.437 GHz)

Typ. -96 dBm @ 1 Mbps
Typ. -92 dBm @ 2 Mbps
Typ. -91 dBm @ 5.5 Mbps
Typ. -88 dBm @ 11 Mbps
Receiver Sensitivity for 802.11g (measured at 2.437 GHz)

Typ. -90 dBm @ 6 Mbps
Typ. -89 dBm @ 9 Mbps
Typ. -88 dBm @ 12 Mbps
Typ. -86 dBm @ 18 Mbps
Typ. -82 dBm @ 24 Mbps
Typ. -79 dBm @ 36 Mbps
Typ. -75 dBm @ 48 Mbps
Typ. -73 dBm @ 54 Mbps
Receiver Sensitivity for 802.11n (2.4 GHz; measured at 2.437 GHz)

Typ. -89 dBm @ MCS0 20 MHz
Typ. -86 dBm @ MCS1 20 MHz
Typ. -84 dBm @ MCS2 20 MHz
Typ. -81 dBm @ MCS3 20 MHz
Typ. -77 dBm @ MCS4 20 MHz
Typ. -73 dBm @ MCS5 20 MHz
Typ. -72 dBm @ MCS6 20 MHz
Typ. -70 dBm @ MCS7 20 MHz
Typ. -91 dBm @ MCS8 20 MHz
Typ. -88 dBm @ MCS9 20 MHz
Typ. -86 dBm @ MCS10 20 MHz
Typ. -82 dBm @ MCS11 20 MHz
Typ. -80 dBm @ MCS12 20 MHz
Typ. -75 dBm @ MCS13 20 MHz
Typ. -74 dBm @ MCS14 20 MHz
Typ. -73 dBm @ MCS15 20 MHz
Typ. -87 dBm @ MCS0 40 MHz
Typ. -84 dBm @ MCS1 40 MHz
Typ. -82 dBm @ MCS2 40 MHz
Typ. -78 dBm @ MCS3 40 MHz
Typ. -75 dBm @ MCS4 40 MHz
Typ. -71 dBm @ MCS5 40 MHz
Typ. -70 dBm @ MCS6 40 MHz
Typ. -68 dBm @ MCS7 40 MHz
Typ. -88 dBm @ MCS8 40 MHz
Typ. -85 dBm @ MCS9 40 MHz
Typ. -83 dBm @ MCS10 40 MHz
Typ. -80 dBm @ MCS11 40 MHz
Typ. -77 dBm @ MCS12 40 MHz
Typ. -73 dBm @ MCS13 40 MHz
Typ. -71 dBm @ MCS14 40 MHz
Typ. -70 dBm @ MCS15 40 MHz
Receiver Sensitivity for 802.11ac (2.4 GHz, Dual Chain)

Typ. -90 dBm @ MCS0 20 MHz
Typ. -87 dBm @ MCS1 20 MHz
Typ. -85 dBm @ MCS2 20 MHz
Typ. -82 dBm @ MCS3 20 MHz
Typ. -79 dBm @ MCS4 20 MHz
Typ. -75 dBm @ MCS5 20 MHz
Typ. -73 dBm @ MCS6 20 MHz
Typ. -72 dBm @ MCS7 20 MHz
Typ. -68 dBm @ MCS8 20 MHz
Typ. -88 dBm @ MCS0 40 MHz
Typ. -85 dBm @ MCS1 40 MHz
Typ. -83 dBm @ MCS2 40 MHz
Typ. -80 dBm @ MCS3 40 MHz
Typ. -77 dBm @ MCS4 40 MHz
Typ. -72 dBm @ MCS5 40 MHz
Typ. -71 dBm @ MCS6 40 MHz
Typ. -70 dBm @ MCS7 40 MHz
Typ. -66 dBm @ MCS8 40 MHz
Typ. -64 dBm @ MCS9 40 MHz
WLAN Operation Mode

Access point
Client
Client-Router
Master
Slave
Sniffer
ACC
Antenna Connectors

2 x QMA

Standards

IEEE 802.3 for 10BaseT
IEEE 802.3u for 100BaseT(X)
IEEE 802.3ab for 1000BaseT(X)
IEEE 802.3at for PoE
IEEE 802.1Q for VLAN Tagging
IEEE 802.1X for authentication
10/100/1000BaseT(X) Ports (M12 X-coded 8-pin female connector)

1
Supports IEEE 802.3at PoE

Management

DHCP Server
DHCP Client
DNS
HTTP
IPv4
LLDP
SMTP
SNMPv1/v2c/v3
Syslog
TCP/IP
Telnet
UDP
VLAN
MXconfig
Security

HTTPS/SSL
RADIUS
SSH
Time Management

SNTP Client

Filter

ICMP
MAC address
IP protocol
Port-based
Client Isolation

Console Port

RS-232
8-pin RJ45

LED Indicators

PWR1, PWR2, PoE, System, LAN, 2.4GHz, 5GHz, SIG

Digital Inputs

2
Max. input current: 8 mA
+13 to +30 V for state 1
+3 to -30 V for state 0
Alarm Contact Channels

Relay output with current carrying capacity of 1 A @ 24 VDC
Buttons

Reset button

Housing

Metal
IP Rating

IP30
Dimensions

45 x 130 x 118 mm (1.77 x 5.12 x 4.65 in)
Weight

800 g (1.76 lb)
Installation

DIN-rail mounting
Wall mounting (with optional kit)

Input Current

12-48 VDC, 2.01-0.5 A
Input Voltage

12 to 48 VDC
Redundant dual inputs
48 VDC Power over Ethernet
Power Connector

1 removable 10-contact terminal block(s)
Power Consumption

24.12 W (max.)

Operating Temperature

Standard models: -25 to 60°C (-13 to 140°F)
Wide temp. models: -40 to 75°C (-40 to 167°F)
Storage Temperature (package included)

-40 to 85°C (-40 to 185°F)
Ambient Relative Humidity

5 to 95% (non-condensing)

EMC

EN 55032/35
EMI

CISPR 32, FCC Part 15B Class A
EMS

IEC 61000-4-2 ESD: Contact: 8 kV; Air: 15 kV
IEC 61000-4-3 RS: 80 MHz to 1 GHz: 20 V/m
IEC 61000-4-4 EFT: Power: 2 kV; Signal: 2 kV
IEC 61000-4-5 Surge: Power: 2 kV; Signal: 2 kV
IEC 61000-4-6 CS: 10 V/m
IEC 61000-4-8 PFMF: 30 A/m
Safety

IEC 60950-1
IEC 62368-1
UL 62368-1
Railway

EN 50121-4
EN 50155
Railway Fire Protection

EN 45545-2
Radio

EN 300 328, EN 301 489-1/17, EN 301 893, FCC, MIC, TELEC, NCC, RCM, SRRC, IC

Time

838,684 hrs
Standards

Telcordia Standard SR-332

Warranty Period

5 years
Details

See www.moxa.com/warranty

Download datasheet

Software, Firmware, and Drivers

Name	Type	Checksum	Version	Operating System	Release Date
Software Package for AWK-3251A-RCC Series (MIB) 24.9 KB	Software Package	2D09037A66A9408A746A951D6113FBADEBE1B882CEB5587E79D45CDB2F769DCB88EC534B4D7B7E8C7BC3CAD859C67FE9404CB8F1C8F4912163CB97D6CEBA13B2 SHA-512	v1.0		Aug 16, 2023 Aug 16, 2023 Release notes
Firmware for AWK-3251A-RCC Series 25.7 MB	Firmware	0CAB63CC6C9276BCD4B801F0E4E8BE1A760DC0FB324FD6AB98A788F40688630344CBF7C89415BF03405AF7E24D775BBB2EEA86F389C59D0017F1AD49DAD36005 SHA-512	v1.0		Aug 16, 2023 Aug 16, 2023 Release notes

Support Documents

Name	Type	Version	Release Date
Datasheet for AWK-3251A-RCC Series 1.3 MB	Datasheet	v1.2	Jan 26, 2026 Jan 26, 2026
Declaration of Conformity (EU/UK) for AWK-3251A-RCC Series 322.3 KB	Declaration	v1.0	Jul 23, 2025 Jul 23, 2025
FOSS Statement for AWK-3251A-M12-RCC Series 1.4 MB	Declaration	v1.0	Oct 21, 2024 Oct 21, 2024
Manual for AWK-3251A-RCC Series 11.0 MB	Manual	v1.0	Aug 15, 2023 Aug 15, 2023
QIG for AWK-3251A-RCC Series 4.1 MB	QIG	v1.0	Aug 15, 2023 Aug 15, 2023

Onboard CCTV Application Architecture Guide

Available Models (6)

Show Images

	Compare AWK-3251A-M12-RCC-US-T	Compare AWK-3251A-M12-RCC-US-CT-T	Compare AWK-3251A-M12-RCC-UN	Compare AWK-3251A-M12-RCC-UN-T
Band	US	US	UN	UN
Operating Temp.	-40 to 75°C	-40 to 75°C	-25 to 60°C	-40 to 75°C
Conformal Coating	–	✓	–	–
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	Compare AWK-3251A-M12-RCC-US	Compare AWK-3251A-M12-RCC-UN-CT-T
Band	US	UN
Operating Temp.	-25 to 60°C	-40 to 75°C
Conformal Coating	–	✓
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