Item no. 852-303

Industrial managed switch; 8 - 10/100 Mb/s RJ45 ports; 2 - 1000 Mb/s Fiber Optic ports

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The 852‐303 Industrial Switch is a 8-port 10/100Base‐TX and 2-port SFP 100Base‐FX/1000Base-FX/SX (optional SFP modules) configurable ETHERNET switch.

Packaged in a rugged housing, this switch offers both a redundant power supply and relay-based function monitoring. These functions, along with extensive ETHERNET switch options, make it ideal for a wide range of applications.


  • Web-based/SNMP management
  • Redundant DC power supply
  • Wide supply voltage range: 12 … 60 VDC
  • DIP switches to set alarm functions
  • Fully compatible with IEEE 802.3, 802.3u, 802.3z, 802.3x, 802.3ad, 802.3ab, 802.1d, 802.1q, 802.1p, 802.1w, 802.1x standards
  • Xpress Ring (redundant ring, recovery < 50 ms)
  • Non‐blocking, store‐and‐forward switching, rapid spanning tree protocol (RSTP)
  • Autonegotiation at all 10/100Base-TX ports
  • Auto-MDI/MDIX (crossover) at all 10/100Base-TX ports
  • VLAN (802.1q) VID
  • IGMP snooping for multicast filtering
  • Port configuration, status, statistics
  • Port trunking
  • SNMP v1/v2 and RMON

Product details

Technical data
Switching mode Store‐and‐forward; non-blocking
Number of 100Base-TX ports 8
Number of 1000Base SX/LX ports 2
Communication standards IEEE 802.3 10BASE-T
IEEE 802.3u 100BASE-TX/FX
IEEE 802.3z 1000BASE-SX/LX
IEEE 802.3x Flow Control
IEEE 802.1w Rapid Spanning Tree Protocol (RSTP)
IEEE 802.1q VLAN Tagging
IEEE 802.1ab Link Layer Discovery Protocol (LLDP)
IEEE 802.1p Prioritization
IEEE 802.1x Port Authentication
Redundancy function Redundant DC power supply; STP; RSTP; MSTP; Jet Ring < 300 ms; Xpress Ring < 20 ms; Dual Homing < 20 ms; Dual Ring; ERPSv2 < 50 ms; LCAP
Configuration options DIP switch for signal contact
Command Line Interface
Diagnostics Signal contact, Modbus/TCP, port status, port statistics, port load, traffic monitor, SFP information, syslog, mail alarm, SNMP traps
MAC table (size) 16000 addresses
Jumbo frame size 10000. Byte
Supply voltage 12 … 60 VDC; Cable length:< 3 m
Power consumption (max.) 12 W
ESD (contact/air discharge) 8 KV / 15 KV
Baud rate Copper cable: 10/100 Mbit/s; Fiber optic:1000 Mbit/s
Transmission medium (communication/fieldbus) Copper cable: Cat. 5e or higher, 100 m maximum cable length; Fiber optic: SX Multi-Mode, LX Single-Mode
Optical fiber type Single-Mode and Multi-Mode
VLAN Port-based and tag-based (4k VIDs)
Controls 14 x DIP switch: Alarm function power supplies and ports 1 … 10, 100/1000 Mbps fiber optic ports; 1 x Reset button: system restart
Indicators Device: LED (PWR, RPS, POST) green: Power supply (primary), redundant power supply (secondary), POST function; LED (ALM) red: Alarm; LED (LASER ON) yellow, LED (LNK/ACT, 100) green, LED (OFFLINE) red: Status of fiber optic ports; per port: LED (100, LNK/ACT) green: Status 100 Mbps, LNK/ACT ports 1 … 8
Connection data
Connection technology: communication/fieldbus Copper cable: 8 x RJ-45; Fiber optic: 2 x SFP; LC fiber-optic connector
Connection technology: supply 1 x Built-in male connector: 231-436/001-000; included female connector (MCS Connectors): 2231-106/026-000
Physical data
Width 50 mm / 1.969 inch
Height 162 mm / 6.378 inch
Depth 120 mm / 4.724 inch
Mechanical data
Weight 910 g
Color metallic black
Housing material Aluminum
Conformity marking CE
Environmental requirements
Surrounding air temperature (operation) -40 … 70 °C
Surrounding air temperature (storage) -40 … 80 °C
Protection type IP30
Relative humidity (without condensation) 95 %
Mounting type DIN-35 rail
Vibration resistance per IEC 60068-2-6
Shock resistance per IEC 60068-2-27
EMC immunity to interference per EN 61000-6-2
EMC emission of interference per EN 61000-6-4
Commercial data
Packaging type BOX
Country of origin TW
GTIN 4055143327176
Customs tariff number 85176200000
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