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PAT4000 All-Domestic 28-Port All-Gigabit Network-Security Power Industry Switch

PAT4000 All-Domestic 28-Port All-Gigabit Network-Security Power Industry Switch

Backplane bandwidth up to 56 Gbps

Wire-speed forwarding and auto MDI/MDI-X on all ports; long-distance transmission supported

IP40 protection rating

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

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Product Overview

PAT4000 all-domestic 28-port full-Gigabit cybersecurity power-industry switch, designed for harsh substation automation networks. Supports 24×GE copper + 4×FE/GE SFP as a cost-effective industrial Ethernet solution.

PAT4000 all-domestic 28-port full-Gigabit cybersecurity power-industry switch uses 100~240V redundant dual power, rackmount, rugged aluminum housing. Management includes IGMP Snooping, IEEE 802.1Q VLAN, port-based VLAN, QoS and port mirroring. Fanless design with redundant ring and RSTP/STP for reliability and backbone availability. IP40, high-level EMI/EMC, strict burn-in—suited to smart substations, distribution automation and renewable plants requiring real-time secure networking for SCADA and protection.

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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?

    +

    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?

    +

    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?

    +

    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?

    +

    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

Backplane bandwidth up to 56Gbps

Rust-free aluminum alloy housing with torx screws

Supports network management

Wire-speed forwarding and auto MDI/MDI-X on all ports; long-distance capable

Supports configuration file upload/download

EMC Level 4

IP40 protection rating

Compact, easy to install, plug-and-play

Fanless design; wide-temperature quiet operation

MTBF ≥ 300,000h

Specifications

IEEE 802.3 CSMA/CD method and physical layer specifications

IEEE 802.1p Priority Queuing

IEEE 802.1q VLAN tagging

IEEE 802.1d Spanning Tree Algorithm

IEEE 802.1w Rapid Spanning Tree

IEEE 802.1s Multiple Spanning Tree

IEEE 802.1x Authentication

IEEE 802.3 Ethernet

IEEE 802.3ac VLAN Tagging

IEEE 802.3ad Link Aggregation

IEEE 802.3x Flow Control

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 854 Telnet Client & Server

RFC 862 Echo Protocol

RFC 863 Discard Protocol

RFC 1027 Using ARP to Implement Transparent Subnet Gateways

RFC 1059, 1119 NTPv1/2

RFC 1112 IGMP IP

RFC 1166 Internet Numbers Internet data

RFC 1191 Path MTU Discovery

RFC 1542 Bootstrap Extensions & DHCP DHCP

RFC 1851 The ESP Triple DES Transform ESP

RFC 1866 HTML HTML

RFC 1994 PPP Challenge Handshake Authentication Protocol (CHAP)

RFC 2068 HTTP

RFC 213 DHCP Server DHCP

RFC 2138 RADIUS

RFC 2139 RADIUS Accounting

RFC 2236 IGMPv2

RFC 2474 DiffServ Precedence

RFC 2475 DiffServ Core and Edge Router Functions

RFC 2597 DiffServ Assured Forwarding

RFC 2598 DiffServ Expedited Forwarding

RFC 2644 Directed Broadcasts

RFC 2865 Remote Authentication Dial in User Service (RADIUS)

RFC 3222 Forwarding Information Base (FIB)

GMRP GARP

GVRP GARP

SSH2 Secure Shell 2

IGMP snooping IGMP

SNMPv1/v2c/v3

  • Switching Performance -

    Backplane Bandwidth56Gbps
    Switching Technologystore-and-forward
    MAC Address Table8K
    Packet Buffer4.1Mbit
    Switching Rate148,800 pps/FE port; 1,488,000 pps/GE port

  • Software Features-

    Management MethodsBrowser, STD-17 MIB-II, STD-58 SMIv2, STD-62 SNMPv3, SNMPv2c, SNMPv1, RFC3636 MAU, RFC2925 Ping MIB, SSH, HTTPS, Telnet
    DiagnosticsIndicators, logs, relay, port mirroring, TRAP
    RedundancySTP, RSTP, MSTP, ERPS, MRP, link aggregation
    time synchronizationNTP ，SNTP
    other4K VLANs, IPv4/IPv6 multicast, storm control, Jumbo Frame

  • Power Parameters+

    Terminals1 removable 5-PIN terminal
    Input voltage100-240VAC (50~60Hz) / 100-240VDC, dual input
    overload current protectionsupport
    reverse polarity protectionsupport
    power≤27W

  • Physical Characteristics+

    Mounting methodRackmount
    shellaluminum alloy housing
    Dimensions (W×H×D)440mm × 43.8mm × 200mm
    protection ratingIP40
    N.W.≤2.0 kg

  • Mechanical Characteristics+

    vibrationIEC 60068-2-6
    impactIEC 60068-2-27
    free fallIEC 60068-2-31
    circuit boardCompliant with IPC standards
    Temperature Characteristics
    Storage Temperature-40℃ ~ 85℃
    operating temperature-40℃ ~ 75℃
    humidity5% ~ 95%, non-condensing

  • Electromagnetic Characteristics+

    EMI radiationFCC 47 CFR Part 15 Class A
    EN55032 Class A
    EN55035 Class A
    EMCIEC(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 SafetyEN 62368-1
    EMC
    EN 55032
    EN 55035
    EN I EC61000-3-2
    EN 61000-3-3
    FCC Part 15 Subpart B C lass A

Dimensions

Dimensions

Accessories

modelProduct Specification
PAT4000-PHH4GX24GEAll-domestic Centauri 1U rackmount 28-port full-Gigabit cybersecurity power-industry industrial switch: 24×10/100/1000BaseT + 4×100/1000BaseX SFP. 1 CLI, 1 relay alarm. IP40, -40°C~+75°C. 100~240V redundant dual power. Includes brackets, monitoring cable and power cord.

Hotline: 86-21-58330762

Zip: 201203

Email: sales@mrdcom.net

Address: No.123 Curie Road, China (Shanghai) Pilot Free Trade Zone

Copyright 2026 MRD Co LTD . All Rights Reserved Shanghai ICP No.12035199

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