Trusted in Industrial Communication for 20+ YearsIndustrial networking products for harsh, mission-critical environments
Managed Industrial Ethernet Switch

Carat20S-D4TX2SC20D3-HV

6-Port Layer 2 Lite Managed Industrial Ethernet Switch

Features and Benefits
  • Gigabit Connectivity2 x 100M/Gigabit 1x9 optical ports + 4 x 10/100/1000Base-T(X) ports
  • Gigabit Connectivity1 x Console port for CLI configuration and debugging
  • Relay Alarm100-240VAC single input, low power consumption
  • Relay AlarmMetal housing, IP40 protection
  • DIP Switch-40°C to +75°C wide operating temperature
Overview

The Carat20S-D4TX2SC20D3-HV product is a Layer 2 DIN-Rail lite managed industrial Ethernet switch. It offers up to 2x100M/Gigabit 1x9 optical ports and 6x10/100/1000Base-T(X) ports, featuring high integration, compact size, rich functionality, and easy operation. It can be widely used in industrial fields such as smart grid, railway transit, new energy, and intelligent manufacturing.

Technical Parameters
Standards Compliance
StandardIEEE 802.3i(10Base-T)
IEEE 802.3u(100Base-TX,100Base-FX)
IEEE 802.3ab(1000Base-T)
IEEE 802.3z(1000Base-SX/LX)
IEEE 802.3x (Flow Control)
IEEE 802.1w(RSTP)
IEEE 802.1Q(VLAN)
IEEE 802.1p(CoS)
Switching Properties
Switching ModeStore and Forward
Switching Capacity12Gbps
Packet Forwarding Rate8.928Mpps
Buffer Size2Mbit
MAC Address Table4K
Switching Latency<10μs
Port Performance
Optical Port2 x 100M/gigabit SC optical ports
Electrical Ports4 x 10/100/1000Base-T(X) ports, RJ45, auto flow control, full/half duplex mode, MDI/MDI-X adaptive
Console/Management Port1 x Console port (RS-232), Type-C
LED IndicatorsSystem (SYS), Alarm (ALM), Power (PWR/P1, P2),
Port (Link/ACT) 1 ~ 6
Key Features
ManagementPort mirroring, SNMPv1 / v2c, LLDP, DHCP Client, file management
SecurityStorm suppression, port rate limit, user privilege levels, port alarm, power alarm, relay alarm
VLAN802.1Q VLAN
ReliabilityRSTP
QoSSupports DSCP, CoS / 802.1p priority,
SP queue scheduling
Mechanical
Dimensions48mm x 106mm x 135mm (W x D x H)
Weight600g
MountingDIN-Rail
OtherIP40 protection, metal housing
Electrical
Input Voltage220VAC (100 ~ 240VAC) single input, overload and reverse polarity protection, 3-pin 5.08mm pitch terminal block
Wattage<5W
Environmental
Operating Temperature-40℃ ~ 75℃
Storage Temperature-40℃ ~ 85℃
Relative Humidity5% ~ 95% (non-condensing)
Certifications
System CertificationISO9001,ISO14001,ISO22163(IRIS)
Product CertificationCE,FCC
SafetyCompliant with EN60950
EMC
EMIFCC CFR47 Part 15B Class A, CE EN55032 Class A
EMSESDEN61000-4-2
RSEN61000-4-3
EFTEN61000-4-4
SurgeEN61000-4-5
CSEN61000-4-6
PFMFEN61000-4-8
VibrationCompliant with IEC 60068-2-6
ShockCompliant with IEC 60068-2-27
Free FallCompliant with IEC 60068-2-32
MTBFMTBF > 50,000 hours
Resources
Name Version Release Date Download
Datasheet for Carat20S-D4TX2SC20D3-HV 201.8 KB
V1.0 Aug 25, 2026
Ordering Information
ModelDescription
Carat20S-D4TX2SC20D3-HV DIN-Rail lite managed industrial Ethernet switch, 2 100M optical ports (SC single-mode dual fiber, 1310nm, 20km), 4 10/100Base-T(X) ports, 220VAC power input, IP40 protection
Carat20S-D4GT2SC20D3-HV DIN-Rail lite managed industrial Ethernet switch, 2 gigabit optical ports (SC single-mode dual fiber, 1310nm, 20km), 4 10/100/1000Base-T(X) ports, 220VAC power input, IP40 protection
Carat20S-D4TX2SC20D3-D2 DIN-Rail lite managed industrial Ethernet switch, 2 100M optical ports (SC single-mode dual fiber, 1310nm, 20km), 4 10/100Base-T(X) ports, 9~36VDC redundant power input, IP40 protection
Carat20S-D4GT2SC20D3-D2 DIN-Rail lite managed industrial Ethernet switch, 2 gigabit optical ports (SC single-mode dual fiber, 1310nm, 20km), 4 10/100/1000Base-T(X) ports, 9~36VDC redundant power input, IP40 protection

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