4-channel RS485 relay module 30A high current Modbus RTU protocol Guide rail type housing

Product characteristics

This product is a 4-channel high-current relay module controlled by an industrial RS485 interface, utilizing the Modbus RTU protocol. It incorporates built-in power isolation, ADI magnetic coupling isolation, self-resetting fuses, TVS, and other protective circuits, and features an ABS rail-mounted housing design. This product is easy to operate and boasts fast, stable, reliable, and secure communication, making it suitable for various industrial control devices or applications with high communication requirements.

Supports setting device addresses (1~255) to cascade multiple devices via RS485 bus

It features a flashing-on and flashing-off function, allowing the relay to be controlled by commands to automatically turn off after being turned on for a certain period of time

On-board voltage regulator chip, direct insertion, wide voltage supply range of 7V~36V

On-board integrated power isolation provides stable isolated voltage, eliminating the need for additional power supply at the isolation terminal

On-board integrated ADI magnetic coupling isolation enables signal isolation, high reliability, strong anti-interference, and low power consumption

Equipped with on-board self-resetting fuses and TVS (Transient Voltage Suppressor), it can effectively suppress surge voltage and transient spike voltage in the circuit, protect against overcurrent and overvoltage, as well as lightning and static electricity

On-board optocoupler isolation to avoid interference from high-voltage circuits of relays

Using a dedicated relay drive chip with built-in freewheeling diode protection, the drive capability is stronger and more stable

The onboard anti-reverse connection circuit prevents the circuit from being burned out due to reversing the positive and negative poles

Using high-quality high-current relays, it allows the connection of loads up to: ≤30A 250V AC or ≤30A 28V DC

The guide rail type ABS protective shell is convenient for installation and use, and it is safer with the shell

Equipped with 3 external LED indicators, it is convenient to check the status of the MCU and the signal transmission and reception status

Product Parameters

Model：Modbus RTU Relay 4CH