MRD - Industrial Communication Products & Solutions

Product Overview

SDS300 series DIN-rail WEB-managed industrial switch

SDS300 DIN-rail WEB-managed industrial switches support up to 4 combo Gigabit/Fast SFP slots + 8 Gigabit copper ports for harsh industrial environments and cost-effective industrial Ethernet. Operating temperature -40℃ ~ +75℃.

SDS300 DIN-rail WEB-managed industrial switches use redundant dual power 9.6~60VDC and 18~30VAC, DIN-rail mount, rugged aluminum housing, IP40, high-level EMI/EMC testing and strict burn-in testing to meet demanding reliability requirements.

Certifications

Contact

FAQ

The cable is connected, but the port will not come UP / the link is down. What should I check?
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1) Confirm an industrial-grade cable and proper RJ45 crimping. 2) Check speed/duplex settings; set both ends to auto-negotiation. 3) Check whether the port is administratively shut down, in the wrong VLAN, or restricted by port security.
What are the PoE power specifications?
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Standard PoE and PoE+ are supported, with max per-port power of 15.4 W and 30 W respectively. Total system power budget must be calculated during selection to avoid insufficient supply when too many PDs are connected.
Which ring protocols are supported, and what is the self-healing time?
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Mainstream industrial ring protocols such as ERPS (G.8032), RSTP/STP, MRP, and PRP are supported. ERPS typical self-healing is ≤50 ms; traditional RSTP is second-level. It is recommended to use one ring protocol consistently across the network.
How should I choose between Layer-2 and Layer-3 industrial switches?
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Layer-2 switches: basic features such as VLAN, ring networks, and port mirroring; suited to access layers and same-subnet networking with strong cost performance. Layer-3 switches: add static routing, OSPF, DHCP relay, multicast, and other routing features—choose these when cross-subnet communication or core/aggregation networks are required.
Can non-OEM SFP optical modules work normally?
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The device is compatible with generic IEEE 802.3 SFP modules. Non-OEM modules can usually be recognized, but some brands may have compatibility issues. OEM modules are recommended.
How do I restore factory settings if I forget the device login password?
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1) Hardware reset: press and hold the RESET button for 5–10 seconds; the device reboots to factory defaults. 2) Software reset: use the vendor NMS to restore factory settings remotely. All custom configurations will be cleared after restore.
What are the power supply requirements for industrial switches?
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DC models support 18–60 VDC or 9.6–60 VDC; AC models support 100–240 VAC, with dual redundant power inputs. Phoenix terminal wiring; reverse-polarity protection is built in so normal reverse connection will not damage the device.
What are the operating temperature range and protection rating of industrial switches?
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All-metal aluminum alloy housing. Operating temperature is -40°C to +75°C; premium wide-temperature models reach -40°C to +85°C. Typical enclosure rating is IP40.

Features

All Gigabit ports

Backplane bandwidth up to 52 Gbps

Wide and diverse power input ranges and types

Rust-free aluminum alloy housing with hex socket screws

Supports WEB management

Wire-speed forwarding and auto-negotiation on all ports; supports long-distance transmission

One-click port isolation and self-healing ring setup

One-click factory reset and reboot

Supports configuration file upload/download

Surge protection: power ±4 kV, Ethernet ports ±4 kV

IP40 protection rating

Compact and easy to install; plug-and-play, no configuration required

Fanless system design for wide-temperature quiet operation

MTBF ≥ 300,000h

Industrial Ethernet Switch

Specifications

IEEE 802.3 CSMA/CD Method and Physical Layer Specifications

IEEE 802.1p Priority Queuing

IEEE 802.1q VLAN Tagging

IEEE 802.1w Rapid Spanning Tree

IEEE 802.3ac VLAN Tagging

IEEE 802.3ad Link Aggregation

IEEE 802.3x Flow Control

IEEE 802.3 Ethernet

IEEE 802.3u Fast Ethernet

IEEE 802.3z Gigabit Ethernet

IEEE 802 Networks

RFC 768 UDP

RFC 791 IP

RFC 792 ICMP

RFC 793 TCP

RFC 826 ARP

RFC 862 Echo Protocol

RFC 863 Discard Protocol

RFC 1027 Using ARP to Implement Transparent Subnet Gateways (Proxy ARP)

RFC 1112 IGMP

RFC 2068 HTTP

RFC 2236 IGMPv2

IGMP Snooping

Switching Performance -

Backplane bandwidth	14 Gbps (5-port / 6-port models) 20 Gbps (10-port model) 52 Gbps (12-port model)
Switching technology	store-and-forward
MAC address table	2K (5-port / 6-port models) 4K (10-port model) 8K (12-port model)
Packet buffer size	2 Mbit (5-port / 6-port models) 2 Mbit (10-port model) 4.1 Mbit (12-port model)
Switching rate	148,800 pps per Fast Ethernet port; 1,488,000 pps per Gigabit port

Software Features -

Management Methods	WEB based on HTTP, SNMPv1, SNMPv2
Diagnostics	Indicators, log files, port mirroring, TRAP
Redundancy	RSTP
DIP switch	VLAN (port isolation), RSTP (self-healing ring),
other	4K VLANs, IPv4 Multicast, storm control, Jumbo Frame support

Power Parameters +
Power connection 1 removable 5-PIN terminal
Input voltage 9.6 ~ 60VDC / 18 ~ 30VAC, dual input
overload current protection support
reverse polarity protection support
Power consumption ≤ 15W

Physical Characteristics +

Mounting	Din-Rail mounting
shell	aluminum alloy housing
Protection rating	IP40
Product dimensions (W× H × D)	42mm × 110mm × 105mm (5-port / 6-port models) 42mm × 140mm × 110mm (10-port / 12-port models)
Weight	<0.6kg

Mechanical Characteristics +

vibration	IEC 60068-2-6
impact	IEC 60068-2-27
free fall	IEC 60068-2-31
circuit board	Compliant with IPC standards Temperature Characteristics
Storage Temperature	-40°C ~ +85°C
Operating temperature	-40°C ~ +75°C
humidity	5% ~ 95% (non-condensing)

Electromagnetic Characteristics +
EMI radiation FCC 47 CFR Part 15 Class A
EN55032 Class A
EN55035 Class A
EMC IEC(EN)61000-4-2, Level 4
IEC(EN)61000-4-4, Level 4
IEC(EN)61000-4-5, Level 4
IEC(EN)61000-4-6, Level 3
IEC(EN)61000-4-8, Level 5
Industry Certification & Testing +
Product Safety EN 62368-1
EMC EN 55032
EN 55035
EN I EC61000-3-2
EN 61000-3-3
FCC Part 15 Subpart B C lass A
other Ministry of Public Security test report, telecom network access license, RoHS

Dimensions

Accessories

model	Product Specification
SDS300-W5R1040T	All-black 5-port DIN-rail WEB-managed industrial switch with Centauri software: 1×100/1000BaseX SFP slot (SFP modules not included) + 4×10/100/1000BaseT copper. IP40, -40°C ~ +75°C. Redundant dual power 9.6 ~ 60VDC or 18 ~ 30VAC. Power cable ordered separately.
SDS300-W6R2040T	All-black 6-port DIN-rail WEB-managed industrial switch with Centauri software: 2×100/1000BaseX SFP slots (SFP modules not included) + 4×10/100/1000BaseT copper. IP40, -40°C ~ +75°C. Redundant dual power 9.6 ~ 60VDC or 18 ~ 30VAC. Power cable ordered separately.
SDS300-W10R2080T	All-black 10-port DIN-rail WEB-managed industrial switch with Centauri software: 2×100/1000BaseX SFP slots (SFP modules not included) + 8×10/100/1000BaseT copper. IP40, -40°C ~ +75°C. Redundant dual power 9.6 ~ 60VDC or 18 ~ 30VAC. Power cable ordered separately.
SDS300-W12R4080T	All-black 12-port DIN-rail WEB-managed industrial switch with Centauri software: 4×100/1000BaseX SFP slots (SFP modules not included) + 8×10/100/1000BaseT copper. IP40, -40°C ~ +75°C. Redundant dual power 9.6 ~ 60VDC or 18 ~ 30VAC. Power cable ordered separately.

Industrial Ethernet

Industrial Wi-Fi

Industrial Cellular

Industrial IoT

Industrial PON

Industrial Power Supply

Software & Service

SDS300 Series Din-Rail WEB-Managed Industrial Switch 1F4T

Product Overview

Certifications

FAQ

The cable is connected, but the port will not come UP / the link is down. What should I check?
+

What are the PoE power specifications?
+

Which ring protocols are supported, and what is the self-healing time?
+

How should I choose between Layer-2 and Layer-3 industrial switches?
+

Can non-OEM SFP optical modules work normally?
+

How do I restore factory settings if I forget the device login password?
+

What are the power supply requirements for industrial switches?
+

What are the operating temperature range and protection rating of industrial switches?
+

Features