RS485 Hub converts RS485 to a star topology with isolated, surge-protected ports, supporting up to 256 devices over 5 km for a rugged, fault-tolerant network.
SC08

Key Features & Benefits

1. Intelligent Fault Isolation


2. Extensive Network Scalability


3. Comprehensive Multi-Layered Protection


4. Flexible Interface and Control


5. Long-Distance, High-Speed Communication


6. Redundant Power Supply Design


7. At-a-Glance Network Diagnosticsading Text Here
PRODUCT CATEGORIES
Unmanaged Ethernet Switch Series
EDS-2005-EL Overview

Introduction

The SC08 hub transforms a standard RS485 bus configuration into a more robust and dependable star topology. By providing eight independent, optically isolated RS485 ports that connect to a central common port, the hub effectively creates separate network segments. This architectural shift is critical for building fault-tolerant communication systems in demanding settings.

The core benefit of this transformation is superior fault isolation. Should a short circuit, device failure, or cable fault occur on one segment, the issue is contained exclusively to that specific port, allowing the rest of the network to operate without interruption. This design enhances overall system ruggedness through comprehensive surge, lightning, and ESD protection. Furthermore, the hub simplifies network expansion, enabling the connection of up to 256 devices with ease and minimizing concerns related to distance and complex cabling.

Performance
Baud Rate: 300 to 115 kbps (Auto Baud rate)
Multidrops: Up to 64 devices per port
Auto Direction Control: Yes
Interface
Input Ports: 8 x RS485
Common Port: 1 x RS232 or RS485 (selectable)
Connectors: Screw Type Terminal block (5-Pin for Common, 3-Pin for Input ports)
Indicators
Power, Common TX, and dedicated RX and Error LEDs for each of the ports
Cables & Distance
Recommended Cable: Twisted or Shielded Twisted pair
Maximum Distance: 0 to 5 Km (distance is dependent on baud rate, from 115 kbps to 300 bps)
Electrical Characteristics
Power Supply: Dual Input - Internal SMPS (Range: 100 to 240V AC) AND Provision for external 230V AC Adapter (12V DC, 1A output)
Power Consumption: 1W
Isolation: 2.5 KV RMS Optical Isolation between each port
Protection: 1500W / 8/20μs Surge Protection, 3,000A Lightning Surge Protection, RS485 Short Circuit Protection, 15KV ESD Protection
Physical Characteristics
Dimensions (without clamp): 31 (H) x 140 (D) x 210 (W) mm
Dimensions (with clamp): 31 (H) x 140 (D) x 230 (W) mm
Weight: Approx. 1 Kg
Environment
Operating Temperature: -40°C to 85°C
Relative Humidity: 5% to 95%
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Support Documents

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Datasheet
User Manual
Categories AC Supply DC Supply Download
SC08 S4
SC08 S8
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      SAN TELEQUIP

      Over the last three decades, SAN Telequip has evolved from process control and security surveillance solutions to advanced VPN Routers, Managed Industrial Ethernet Switches, and IIoT Gateways etc. Today, we serve diverse sectors including Building Automation, Oil & Gas, Telecom, Power & Energy, Renewables, Metro & Rail, ATMS/TMS, Data Centers, Mining, Healthcare, Infrastructure, and Industrial Automation. We design and manufacture rugged, high-reliability devices that connect systems, processes, and people in mission-critical environments. Driven by strong in-house R&D, we are advancing in Edge Computing, Secure Industrial Networking, TSN, Cybersecurity, 5G Technology and Cloud Connectivity – delivering future-ready solutions for next-generation infrastructure and Industrial Networks.

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      Location

      Deron Heights, Office No.504 & 505, 5th Floor,
      S. No. 270/1/23, Baner Road,
      Opp. Mahabaleshwar Hotel, Baner, Pune – 411045