Industrial Modbus RTU RS485 4-ch Relay With isolation protection and guide rail

Industrial Modbus RTU RS485 4-ch Relay With isolation protection and guide rail

$32.69

Brand：SpotPear

SKU：020100300000

Date：2025-03-13 18:06

Part Number：

Modbus-RTU-Relay-4CH

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4-way RS485 high current relay module Modbus RTU protocol External LED indicator With multiple isolation protection circuits Industrial grade DIN-rail housing

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Product Features

This product is a 4-way high-current relay module controlled by an industrial RS485 interface, using the Modbus RTU protocol, with built-in power isolation, ADI magnetic coupling isolation, self-recovery fuse and TVS protection circuits, and ABS rail housing design. This product is easy to operate, with fast communication speed, stability, reliability, and safety, and can be applied to various industrial control equipment or applications with high communication requirements.

Supports setting device address (1~255) to cascade multiple devices via RS485 bus
With flash-on and flash-off functions, the relay can be controlled by command to automatically close after being opened for a period of time
Onboard voltage regulator chip, direct plug-in 7V~36V wide voltage power supply
Onboard integrated power isolation can provide stable isolation voltage, and no additional power supply is required at the isolation end
Onboard integrated ADI magnetic coupling isolation for signal isolation, high reliability, strong anti-interference and low power consumption
Onboard resettable fuse and TVS (transient voltage suppressor) can effectively suppress surge voltage and transient spike voltage in the circuit, prevent overcurrent and overvoltage, lightning protection and anti-static
Onboard optocoupler isolation to avoid interference from relay high voltage circuits
Adopting special relay driver chip, with built-in freewheeling diode protection, the driving ability is stronger and more stable
Onboard anti-reverse connection circuit to prevent the positive and negative poles from being reversed and burning the circuit
Adopt high-quality high-current relays, allowing access to loads: ≤30A 250V AC or ≤30A 28V DC
Rail-type ABS protective housing, easy to install and use, safer with housing

Three external LED indicators are provided to facilitate viewing of the MCU status and signal receiving and sending status

Product Parameters

Operating voltage	7V~36V
Communication Protocol	RS485
Communication baud rate	4800，9600，19200，38400，57600，115200， 128000，256000
Default communication format	9600，N，8，1
Relay number	4-way
Contact Type	One normally open, one normally closed
Contact load	≤30A 250V AC or ≤30A 28V DC
Communication Protocol	Standard Modbus RTU protocol
RS485 address setting	1~255
Indicator Lights	STA: MCU indicator light, flashes when MCU is working normally TXD: Send indicator light, the light is on when sending data RXD: receiving indicator light, the light is on when receiving data

Ports and indicators

With a variety of indicator lights, it is convenient to check the working status of the module

High current terminal blocks

30A high current relay, high quality terminal block with cover,
All interfaces can be directly connected through the wiring terminals, making high current wiring more convenient

Onboard multiple isolation protection circuits

Multiple protections, safer and more reliable to use

Guide rail housing design

Rail-type ABS protective housing, easy to install and use, safer with housing

RS485 communication

Supports setting device address (1~255), and multiple devices can be cascaded through RS485 bus.

When there are many cascaded devices and the communication distance is far, it is necessary to add RS485 repeater according to the actual situation.

The picture is for display only, this product does not include USB to RS485

Relay Wiring

The device has a relay with a contact rating of 30A 250V AC or 30A 28V DC

Application Scenario

Products

Product size

[] Modbus-RTU-Relay-4CH

To：

Dear Customers, There may be a lag of several hours before we could process your order, depending on the time difference between your location and ours. Sincerely hoping your understanding!