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H03 Isolated RS485 HUB 1:3 3kV DC Isolation Side (1)
H03 Isolated RS485 HUB 1:3 3kV DC Isolation Side (1)
- Isolated RS485 1:3 HUB Single Side Isolated (1) Isolation 3kV DC
Product description
Redisage's H03 is a reliable RS485 signal HUB made to work with variable transmission speeds up to 115200 bps. It allows flexible branching of the 1:3 interface while simultaneously protecting the attached devices with a 3 kVDC main-side isolation. Additionally, a dedicated EMC protection circuit improves transmission quality in an industrial environment. H03 is powered with 12-30 VDC or 24 VAC and ensures low power consumption of less than 1W.
Technical Documentation
| Operations and Maintenance Manual | H03 Datasheet and Selection Guide |  |
| Redisage Documentation Space | doc.redisage.com |
Main data
Power voltage
12-30 V/DC
Galvanic isolation
Master RS485 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 H03
H03 RS485 Hub – Isolated 1-to-3 Signal Distribution
Redisage’s H03 is a reliable three-way isolated industrial RS485 signal HUB made to work with variable transmission speeds up to 115200 bps. Designed to enhance signal integrity and stability in large-scale RS485 networks, it allows flexible branching of the 1:3 interface while simultaneously protecting the attached RS485 communication devices with 3 kV DC main-side isolation between power, input, and output. Because of this, using this distributor hub protects systems from all kinds of electrical interference.
Additionally, thanks to the dedicated EMC protection circuit, the transmission quality in any industrial environment will be dramatically improved with an optimized bidirectional data flow—and all of that without requiring tiring additional configuration. The ease of incorporating the H03 into existing networks makes it a seamless yet immediately noticeable addition to your grid’s data flow.
The H03 is powered with 12–30 VDC or 24 VAC and ensures low power consumption of less than 1W.
Key Features of isolated RS485 Hub:
- 1-to-3 RS485 signal distribution
- Three-way 3kV isolation
- Automatic RS485 direction control
- ESD protection
- Baud rate: up to 115.2 kbps
The H03 hub is perfect for applications in industrial automation, large RS485-based networks and in environments prone to electrical noise. With its safety features, the isolated 1-to-3 hub ensures stable, secure, and interference-free data transmission across multiple devices.
3 Year Warranty
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