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H01 - RS485 Hub 1:3 (Full 3-Way 3kV Isolation)
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H01 - RS485 Hub 1:3 (Full 3-Way 3kV Isolation)
- Active 1-to-3 RS485 signal splitter allowing star topology, with extensive galvanic isolation.
Product Description
The Redisage H01 is an advanced RS485 Hub designed to overcome the strict daisy-chain limitation of the standard. It splits one RS485 input line into 3 independent output lines, enabling the creation of a Star Topology or Tree Topology in industrial networks.
It provides full 3-way galvanic isolation (3kV), protecting the power supply, the input port, and the output ports from each other. Key features:
• Split: 1x RS485 Input -> 3x RS485 Outputs
• Isolation: Full 3-Way (3000 VDC)
• Speed: Up to 115200 bps
• Power Supply: 12-30 VDC or 24 VAC
• Feature: Automatic Data Direction Control (ADDC)
Technical Documentation
Datasheet (DTR):
⬇ Download H01 Datasheet
Knowledge Base:
🔗 doc.redisage.com
Main data
Power voltage
24 V/AC
12-30 V/DC
Galvanic isolation
Three-Way 3 kV/DC
Power connector
Screw terminal
Work temperature range
-40°C to +75°C
Safety measures
ESD 4 kV / 8 kV
Burst
Surge
RF
LED
Tx
4x Rx
Power
Serial Ports
Number of ports
4
Port type
4x RS485
Connector type
Screw terminal
Transmission speed
115200 bps
Data bits
7
8
Stop bits
1
2
Controll Bits
none
odd
even
Enclosure
Ingress Protection Code
IP20
Length
98 mm
Height
56.4 mm
Width
22.5 mm
Width in standard modules S (17.5 mm)
1.5 Module
Mounting
DIN Rail
Standards and Certifications
Declarations of Conformity
CE
RoHS
EMC
LVD
Norms
61000-6-2 - Immunity standard for industrial environments
61000-6-4 - Emission standard for industrial environments
About H01
H01 – Star Topology for RS485 Networks
The H01 RS485 Hub solves the most common architectural constraint. By splitting a single input line into three independent output lines, it allows installers to build "Star" or "Tree" topologies, which are traditionally forbidden in RS485 networks. This drastically reduces cabling costs by allowing the network to branch out to different locations from a central point.
More than just a splitter, the H01 is a safety device offering full 3-way galvanic isolation (3kV). This separates the input port, the power supply, and the output ports from each other. If a short circuit or surge occurs on one of the output branches, it is contained there and will not damage the Master controller or devices on other branches.
The unit features Automatic Data Direction Control (ADDC), meaning it requires no software configuration or flow control signals—it simply works transparently with any serial protocol.
Technical Specifications:- Function: 1 Input to 3 Outputs (RS485).
- Isolation: 3kV (Power || Input || Outputs).
- Power: 12–30 VDC / 24 VAC (<1W consumption).
- Mounting: DIN rail (22.5mm width).
Build flexible and safe networks with the H01. Wiring examples can be found in the technical documentation.
3 Year Warranty
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