The SC1M25-4S5 features both isolated RS485 and RS232 interfaces on its primary (master) side, while providing four isolated RS485 interfaces on its secondary (slave/expansion) side.

The SC1M25-4S5 active isolated RS485 hub is specifically designed for harsh industrial environments, making it an ideal choice for applications that demand high levels of reliability and safety. Its optoelectronic isolation capability effectively decouples the RS485 master and slave devices, protecting them from damage caused by ground potential differences, static electricity, lightning strikes, or electrical surges. Furthermore, it prevents ground loops—which can arise from ground potential differences between devices—from damaging the RS485 equipment.

The main applications:

1. Isolation: Effectively isolates the master and slave sides of an RS485 network, while also providing isolation between the four slave branches.

2. Relaying (Repeater): Extends the communication distance of an RS485 network.

3. Expansion: Expands a single RS485 channel into four, allowing for a significant increase in the number of RS485 devices within the network.

4. Conversion: Converts a single RS-232 channel into four RS485 channels.

Technical Features:

1.The RS485 master and slave ports feature 2500V isolation protection.

2.The RS485 master and slave ports support up to 256 slave devices.

3.Equipped with a mounting slot on the rear, suitable for DIN-rail installation.

4.Supports a wide input voltage range of 9–24V.

5.Includes an indicator for reversed RS485 wiring; the CH1–CH4 LED indicators will remain lit if the A and B wires are connected in reverse.

Technical Features