NPort IA5450A Device Server, RS232/422/485, 4 Port w Surge Protection

Part #: M NPORT IA5450A

4-port RS-232/422/485 industrial automation device server with serial/LAN/power surge protection, 2 10/100BaseT(X) ports with single IP, 0 to 60°C operating temperature
  • Overview
  • Specifications
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  • Overview

1, 2, and 4-port serial device servers for industrial automation

Features and Benefits 

  • Enhanced surge protection for LAN/serial/power
  • 2 kV isolation for serial signals
  • Screw-type terminal blocks for secure power/serial connections
  • C1D2, ATEX, and IECEx certified for harsh industrial environments
  • Cascading Ethernet ports for easy wiring
  • Redundant DC power inputs
  • Warning by relay output and email
  • -40 to 75°C operating temperature range (T models)


The NPort IA5000A series device servers are designed for connecting industrial automation serial devices, such as PLCs, sensors, metres, motors, drives, barcode readers, and operator displays. The device servers are built solid with a metal housing, screw connectors, and provide full surge protection. The NPort IA5000A series device servers are extremely user-friendly, making simple and reliable serial-to-Ethernet solutions possible.

Cascading Ethernet Ports Make Wiring Easy (10/100BaseTX models only)

The NPort IA5000A series device servers each have two Ethernet ports that can be used as Ethernet switch ports. One port connects directly to the network or server, and the other port can be connected to another NPort IA device server or another Ethernet device. The dual Ethernet ports help reduce wiring costs by eliminating the need to connect each device to a separate Ethernet switch.

Redundant Power Inputs

The NPort IA5000A series device servers have two power inputs that can be connected simultaneously to live DC power sources. If one power source fails, the other source takes over automatically. Redundant power inputs help ensure uninterrupted operation of your device server.

Relay Output Warning and E-mail Alerts

The built-in relay output can be used to alert administrators when the network is down, when power failure occurs or when there is a change in the DCD or DSR serial signals. An e-mail warning can also be issued when an abnormality is detected. These functions are valuable tools that enable maintenance engineers to react promptly to emergency situations.

Surge Protection for Serial, LAN, and Power

Moxa’s leading-edge surge immunity solution, which is applied to the NPort® IA5000A’s serial, power, and Ethernet lines, is tested and proven compliant with IEC 61000-4-5. This advanced surge protection provides a robust serial-to-Ethernet solution that can protect electrical devices from voltage spikes and resist electrical interference, such as in oil, gas, and power automation applications.

Industrial-grade Certification

To ensure safe and reliable operation in industrial environments, the NPort® IA5000A device servers have obtained various industrial certifications, including an IP30 rating for mechanical protection and UL508 safety certification for industrial control equipment. In addition, these device servers are UL/cUL listed (for Class1, Division 2, Groups A,B,C,D), ATEX Class1 Zone 2, and IECEx compliant for use in hazardous locations.

  • Specifications
Ethernet Interface
Number of Ports 2
Speed 10/100 Mbps, auto MDI/MDIX
Connector 8-pin RJ45
Magnetic Isolation Protection 1.5 kV built-in
Ethernet Line Protection 1 kV (level 2) surge protection
Serial Interface
Number of Ports NPort IA5150A: 1
NPort IA5250A: 2
NPort IA5450A: 4
Serial Standards RS-232/422/485
Connector NPort IA5150A: DB9 for RS-232, terminal block for RS-422/485
NPort IA5250A/IA5450A: DB9 for RS-232/422/485
Serial Line Protection • 15 kV ESD protection for all signals
• 2 kV isolation protection for isolation models
• 1 kV (level 2) surge protection
RS-485 Data Direction Control ADDC® (automatic data direction control)
Serial Communication Parametres
Data Bits 5, 6, 7, 8
Stop Bits 1, 1.5, 2
Parity None, Even, Odd, Space, Mark
Flow Control RTS/CTS and DTR/DSR (RS-232 only), XON/XOFF
Baudrate 50 to 921.6 kbps
Serial Signals
RS-422 Tx+, Tx-, Rx+, Rx-, GND
RS-485-4w Tx+, Tx-, Rx+, Rx-, GND
RS-485-2w Data+, Data-, GND
Network Protocols ICMP, IPv4, TCP, UDP, DHCP, BOOTP, Telnet, Rtelnet, DNS, SNMP, HTTP, SMTP, SNTP, IGMP
Configuration Options Web Console, Serial Console, Telnet Console, Windows Utility
Windows Real COM Drivers Windows 95/98/ME/NT/2000, Windows XP/2003/Vista/2008/7/8/8.1 (x86/x64), Windows 2008 R2/2012/2012 R2 (x64), Windows Embedded CE 5.0/6.0, Windows XP Embedded
Fixed TTY Drivers SCO Unix, SCO OpenServer, UnixWare 7, QNX 4.25, QNX 6, Solaris 10, FreeBSD, AIX 5.x, HP-UX 11i, Mac OS X
Linux Real TTY Drivers Linux 2.4.x, 2.6.x, 3.x
Physical Characteristics
Housing Metal
Weight NPort IA5150A: 475 g
NPort IA5250A: 485 g
NPort IA5450A: 560 g
Dimensions NPort IA5150A/IA5250A: 36 x 105 x 140 mm (1.42 x 4.13 x 5.51 in)
NPort IA5450A: 45.8 x 134 x 105 mm (1.8 x 5.28 x 4.13 in)
Environmental Limits
Operating Temperature Standard Models: 0 to 60°C (32 to 140°F)
Wide Temp. Models: -40 to 75°C (-40 to 167°F)
Storage Temperature -40 to 75°C (-40 to 167°F)
Ambient Relative Humidity 5 to 95% (non-condensing)
Altitude Up to 2000 m
Note Please contact Moxa if you require products guaranteed to function properly at higher altitudes.
Power Requirements
Input Voltage 12 to 48 VDC (10.8 to 60 VDC)
Power Consumption NPort IA5150A: 12 to 48 VDC; 220 mA @ 12 VDC, 110 mA @ 24 VDC
NPort IA5150AI: 12 to 48 VDC; 255 mA @ 12 VDC, 130 mA @ 24 VDC
NPort IA5250A: 12 to 48 VDC; 250 mA @ 12 VDC, 125 mA @ 24 VDC
NPort IA5250AI: 12 to 48 VDC; 290 mA @ 12 VDC, 150 mA @ 24 VDC
NPort IA5450A: 12 to 48 VDC; 374 mA @ 12 VDC, 184 mA @ 24 VDC
NPort IA5450AI: 12 to 48 VDC; 512 mA @ 12 VDC, 242 mA @ 24 VDC
Standards and Certifications
Safety UL 508
Hazardous Location UL/cUL Class I Division 2 Groups A/B/C/D, ATEX Class I Zone 2, IECEx
EMI EN 55022 Class A, FCC Part 15 Subpart B Class A
EMS EN 55024,
EN 61000-4-2 (ESD) Level 3,
EN 61000-4-3 (RS) Level 3,
EN 61000-4-4 (EFT) Level 4,
EN 61000-4-5 (Surge) Level 3,
EN 61000-4-6 (CS) Level 3,
EN 61000-4-8,
EN 61000-4-11
Shock IEC 60068-2-27
Freefall IEC 60068-2-32
Vibration IEC 60068-2-6
Alert Tools Built-in buzzer and RTC (real-time clock)
Automatic Reboot Trigger Built-in WDT (watchdog timer)
MTBF (mean time between failures) 262,805 hrs
Warranty Period 5 years
Details See
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