Core CPU, switch chip and PHY use domestic chips with a domestic-IP Linux OS
Supports MRD-Ring® Ethernet ring; node recovery <5 ms, ring recovery <50 ms (typical)
Any two ports can form a self-healing ring; multiple independent rings supported
Supports power SV sample-frame switching delay accumulation; accuracy better than 200 ns
The TNM4000 general-purpose managed rack-mount industrial switch is designed for harsh-environment networks, configurable with 20×10/100/1000BaseT + 4×100/1000Base(X/T) COMBO + 8×100/1000BaseX SFP + 4×100/1000/2500/10000BaseX SFP, supporting multi-rate fiber and copper for high-speed data, especially high-bandwidth large industrial networks.
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?
+Core CPU, switch chip and PHY use domestic chips with domestic-IP Linux OS
Supports MRD-Ring® Ethernet ring; node recovery < 5 ms; ring recovery < 50 ms (typical)
Supports any two ports can form a self-healing ring, and multiple independent self-healing rings
Complies with DL/T 860 (IEC 61850) modeling and communication
The TNM4000-ISC28HH4X24MX Layer-3 industrial switch uses a fanless design with redundant dual power inputs to avoid fan-failure risks. Redundant power keeps the switch running if one PSU fails, enhancing stability and continuity. It also supports redundant rings (e.g. ERPS, MRP) and RSTP/STP for fast fault detection/recovery and high backbone availability.
All-black with Changzheng Centauri software, 40-port standard 19-inch rack-mount advanced Layer-3 industrial switch: 24 Gigabit copper + 8 GE/FE auto-sensing SFP + 8×10G/1G auto-sensing SFP. 1 MGT, 1 CLI, 1 relay. Dual 100~240V inputs. Specifications are subject to change without notice.
52mm x 140mm x 110mm (16-port die-cast); 50mm x 143mm x 110mm (16-port sheet-metal); 72mm x 140mm x 110mm (24-port die-cast); 65mm x 143mm x 110mm (24-port sheet-metal)
Supports port-based unicast MAC binding
Layer-3 enhanced IP41 fully sealed 1U rack-mount (19-inch capable): 8 FE M12 (PoE/PoE+ with built-in 130W PoE PSU). Industrial isolated power (110VDC/220VAC).
Layer-3: 4 GE/FE auto-sensing SFP + 12 Gigabit copper (onboard rugged M12, mating plugs not included), redundant dual DC isolated power (18~60VDC). IP40. Mounting accessory: SDMFB-DM DIN-rail mount kit with screws. Industrial power cord specs
Supports CSD offline configuration
Provides packet-loss protection and fast recovery from network faults
The TNM4000 managed Layer-2 industrial switch is fanless with redundant dual power inputs and supports redundant rings and RSTP/STP to improve system reliability and backbone availability.
Layer-2 QoS rate limiting and traffic shaping enable tiered Ethernet bandwidth services
Provides static/dynamic CPU resource allocation and limiting, with real-time monitoring of key parameters including CPU utilization, memory usage and device temperature
Supports CLI, Telnet, Web management and SNMPv1/v2c/v3 NMS software
IP40 Ingress protection
Redundant dual power input design
IEEE 802.3 CSMA/CD method and physical Layer specifications CSMA/CD method and physical layer specifications
IEEE 802.1p Priority Queuing Priority Queuing
IEEE 802.1q VLAN tagging VLAN Tagging
IEEE 802.1d Spanning Tree Algorithm Spanning Tree Protocol
IEEE 802.1w Rapid Spanning Tree Rapid Spanning Tree Protocol
IEEE 802.1s Multiple Spanning Tree Multiple Spanning Tree Protocol
IEEE 802.1x Authentication Authentication
IEEE 802.3ac VLAN Tagging VLAN Tagging
IEEE 802.3ad Link Aggregation Link Aggregation
IEEE 802.3x Flow Control Flow Control
IEEE 802.3 Ethernet Ethernet
IEEE 802.3u Fast Ethernet Fast Ethernet
IEEE 802.3z Gigabit Ethernet Gigabit Ethernet
IEEE 802 Networks Networks
RFC 768 UDP User Datagram Protocol
RFC 791 IP Internet Protocol
RFC 792 ICMP Internet Control Message Protocol
RFC 793 TCP Transmission Control Protocol
RFC 826 ARP Address Resolution Protocol
RFC 854 Telnet Client & Server Telnet Client & Server
RFC 862 Echo Protocol Echo Protocol
RFC 863 Discard Protocol Discard Protocol
RFC 1027 Using ARP to Implement Transparent Subnet Gateways Proxy ARP
RFC 1059,1119 NTPv1/2 Network Time Protocol v1 and v2
RFC 1112 IGMP Host Extensions for IP Multicasting
RFC 1191 Path MTU Discovery Path MTU Discovery
RFC 1542 Bootstrap Extensions & DHCP DHCP relay agent
RFC 1851 The ESP Triple DES Transform ESP Triple DES Transform
RFC 1866 HTML HTML
RFC 1994 PPP Challenge Handshake Authentication Protocol (CHAP) Challenge Handshake Authentication Protocol
RFC 2068 HTTP Hypertext Transfer Protocol
RFC 213 DHCP Server DHCP Server
RFC 2138 RADIUS Remote Authentication Dial-In User Service
RFC 2139 RADIUS Accounting RADIUS Accounting
RFC 2236 IGMPv2 IGMPv2
RFC 2474 DiffServ Precedence
RFC 2597 DiffServ Assured Forwarding
RFC 2598 DiffServ Expedited Forwarding
RFC 2644 Directed Broadcasts Directed Broadcasts
RFC 2865 Remote Authentication Dial User Service (RADIUS)Remote Authentication Dial-In User Service
RFC 3046 DHCP Relay Agent Information Option DHCP Relay Agent Information Option
RFC 3222 Forwarding Information Base (FIB) Forwarding Information Base
GMRP GARP Multicast Registration Protocol
GVRP GARP VLAN Registration Protocol
SSH2 Secure Shell 2
IGMP snooping IGMP snooping
SNMPv3 Simple Network Management Protocol v3
| Backplane bandwidth | 136Gbps |
| Processor | 1.0G dual-core |
| Switching technology | store-and-forward |
| MAC address table | 196K |
| Packet buffer | 9MB |
| Switching rate | 148,800 pps/FE port; 1,488,000 pps/GE port |
| Management Methods | Browser, Serial, STD-17 MIB-Il, STD-58 SMIv2, STD-59 RMON, STD-62 SNMPv3, SNMPv2c , SNMPv1 , RFC 2668 MAU , RFC 2925 Ping MIB , MRD Private MI Bs |
| Diagnostics | LEDs, log files, relay, RMON, port mirroring, TRAP |
| Redundancy | MSTP , RSTP , link aggregation |
| time synchronization | NTP ，SNTP |
| Other | IPv4/IPv6 multicast , storm control , MC/BC protection , Supports Jumbo Frame |
| Terminal block | 1 removable 5-pin terminal block |
| Input voltage | 100 ~ 240VAC(50~60Hz) & 100 ~ 240VDC , dual input |
| Power consumption | ≤40W |
| overload current protection | Supports |
| reverse polarity protection | Supports |
| Dimensions (W×H×D) | 440mm×43.8mm×300mm |
| housing | aluminum alloy housing |
| Mounting method | rack mounting |
| protection rating | IP40 |
| Weight | ≤4.0kg |
| MTBF | ≥20,000H |
| storage temperature | -40°C ~ +85°C |
| Operating temperature | -40°C ~ +70°C |
| Humidity | 5% ~ 95% (non-condensing) |
| Vibration | GB/T 15153.2-2000 |
| Shock | GB/T 15153.2-2000 |
| free fall | GB/T 15153.2-2000 |
| PCB | Compliant with IPC standards |
| EMI radiation | FCC 47 CFR Part 15 Class A EN55032 Class A EN55035 Class A |
| EMC | GB/T 17626.2, Level 4 GB/T 17626.3, Level 3 GB/T 17626.4, Level 4 GB/T 17626.5, Level 4 GB/T 17626.6, Level 3 GB/T 17626.8, Level 5 GB/T 17626.9, Level 5 GB/T 17626.10, Level 5 GB/T 17626.18, Level 3 GB/T 17626.16, Level 4 GB/T 17626.29 ，0% ，100ms GB/T 17626.11, 0%, 250 cycles Q/CSG 1204005.67.7-2014 |
| Model | Product Specification |
| MRD-PAT4GP2-N-F16G4 | rack-mount 20-port 1U China Southern Gridhomegrown controllableIT-innovationFour-Unified switch (with delay accumulation), 16 100BaseX SFP slots+4 100/1000BaseX SFP slots, 1 CLI/MGT combined management port, 1 relay, dual 100-240V power inputs. Includes mounting brackets, monitoring cable and power cord. |
| MRD-PAT4GP3-N-G16 | rack-mount 16-port 1U China Southern Gridhomegrown controllableIT-innovationFour-Unified switch (with delay accumulation), 16 100/1000BaseX SFP slots, 1 CLI/MGT combined management port, 1 relay, dual 100-240Vpower inputs. Includes mounting brackets, monitoring cable and power cord. |
| MRD-PAT4G-Z-E24G4 | rack-mount 28-port 1U State Gridhomegrown controllableIT-innovationFour-Unified switch, 24 10/100BaseT copper ports+4 100/1000BaseX SFP slots, 1 CLI/MGT combined management port, 1 relay, dual 100-240Vpower inputs. Includes mounting brackets, monitoring cable and power cord. |
| MRD-PAT4G-G-F16G4 | rack-mount 20-port 1U State Gridhomegrown controllableIT-innovationFour-Unified switch (without delay accumulation), 16 100BaseX SFP slots+4 100/1000BaseX SFP slots, 1 CLI/MGT combined management port, 1 relay, dual 100-240V power inputs. Includes mounting brackets, monitoring cable and power cord. |
| MRD-PAT4G-G-G16 | rack-mount 16-port 1U State Gridhomegrown controllableIT-innovationFour-Unified switch (without delay accumulation), 16 100/1000BaseX SFP slots, 1 CLI/MGT combined management port, 1 relay, dual 100-240Vpower inputs. Includes mounting brackets, monitoring cable and power cord. |
| MRD-PAT4G-Z-G24G4 | rack-mount 28-port 1U China Southern Gridhomegrown controllableIT-innovationautomation switch, 24 10/100/1000BaseT copper ports+4 100/1000BaseX SFP slots, 1 CLI/MGT combined management port, 1 relay, dual100-240V power inputs. Includes mounting brackets, monitoring cable and power cord. |
| MRD-PAT4G-Z-G16G4 | rack-mount 20-port 1U China Southern Gridhomegrown controllableIT-innovationautomation switch, 2 10/100/1000BaseT copper ports+2 100/1000BaseX SFP slots+16 100/1000BaseX SFP slots, 1 CLI/MGT combined management port, 1 relay, dual 100-240V power inputs. Includes mounting brackets, monitoring cable and power cord. |
| MRD-PAT4G-Z-G16G2 | rack-mount 18-port 1U China Southern Gridhomegrown controllableIT-innovationautomation switch, 2 10/100/1000BaseT copper ports+16 100/1000BaseX SFP slots, 1 CLI/MGT combined management port, 1 relay, dual100-240V power inputs. Includes mounting brackets, monitoring cable and power cord. |
| MRD-PAT4G-Z-F16G2 | rack-mount 18-port 1U China Southern Gridhomegrown controllableIT-innovationautomation switch, 2 10/100/1000BaseT copper ports+16 100BaseX SFP slots, 1 CLI/MGT combined management port, 1 relay, dual 100-240Vpower inputs. Includes mounting brackets, monitoring cable and power cord.Tel: 86-21-58330762 Fax: 86-21-58330763 |
Hotline: 86-21-58330762
Zip: 201203
Email: sales@mrdcom.net
Address: No.123 Curie Road, China (Shanghai) Pilot Free Trade Zone
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