1 Channel 30A Relay Module with Optocoupler Isolation (Heavy-Duty Industrial Grade 24V Power Control Switch)

Introduce uncompromised high-current electrical switching, heavy industrial load handling, and absolute digital logic safety into your automation grids with the premium 1 Channel 30A Relay Module with Optocoupler Isolation. Power-staged around a heavy-duty mechanical relay core and fully optimized for 24V industrial control rails, this rugged single-channel switching board bridges the gap between delicate low-voltage processing cores and high-power utility machinery.

Standard electronic relay boards are rated for minimal current throughputs and lack electrical isolation, causing inductive back-electromotive force spikes to travel backward through the trace paths and permanently fry your microcontrollers. This module resolves those critical failure points by routing the control lines through a high-isolation optical coupling chip that completely separates the digital logic from the high-voltage load traces. Capable of handling massive continuous currents up to 30 Amps, it serves as the definitive switching choice for heavy-duty automated machinery, industrial water pumps, large heating elements, and centralized power distribution hubs.

Key Features

• Industrial 30A High-Current Load Core: Outfitted with a premium heavy-duty mechanical switching relay capable of safely handling continuous power currents up to 30 Amps for demanding equipment.

• Complete Optocoupler Signal Isolation: Features an onboard optical coupling chip that uses internal light paths to transmit switching signals, building an impenetrable barrier against destructive voltage surges.

• Universal High/Low Logic Triggering: Equipped with a onboard jumper header selection track that lets you configure the channel to trip on either a digital High voltage pulse or a digital Low ground pulse.

• Optimized 24V Industrial Power Rail: Engineered specifically to interface directly with industry-standard 24V automation power grids, ensuring flawless coil actuation without drawing heavy currents from your processing board.

• Heavy-Duty Screw Terminal Output Block: Formed with large, thick-gauge barrier screw terminals that clamp down tightly on heavy high-current copper supply lines with zero physical flexing.

• Fortified Dual-Layer Isolation Substrate: Machined on a rigid, flame-retardant composite board with wide copper trace lanes and physical air-gap routing slots beneath the high-voltage tracks to eliminate trace-to-trace electrical arcing.

• Seamless Customization Support: Developed around an exceptionally versatile manufacturing template. If your custom commercial automation console or proprietary machine frame requires right-angle control pins, customized enclosure mounting tracks, or alternative 5V or 12V coil variants, we can easily modify the internal tracking and component population to match your exact blueprint specifications.

Technical Specifications

Hardware Terminal & Jumper Interface Mapping

The interface board splits the sensitive low-voltage digital control logic cleanly away from the high-voltage mechanical output contacts:

Low-Voltage Control Inputs (3-Pin Header Block):

• DC+ (Positive System Power): Connect to the positive 24V direct-current power supply rail to feed the internal relay coil circuit.

• DC- (Negative System Ground): Connect straight to the common negative reference or ground return line of your 24V grid.

• IN (Digital Control Signal Pin): The logic command wire. Route this pin straight to a digital output pin on your microcontroller or industrial sensor to schedule automated toggling.

High-Low Trigger Selector (3-Pin Jumper Track):

• High-Level Trigger Mode: Place the plastic jumper cap across the High pin and the center pin. The relay will now trip exclusively when a positive voltage pulse is sent to the IN terminal.

• Low-Level Trigger Mode: Place the plastic jumper cap across the Low pin and the center pin. The relay will now trip exclusively when a ground/zero-volt pulse is sent to the IN terminal.

High-Current Load Outputs (3-Terminal Screw Block):

• NO (Normally Open Contact): The primary switching output line. This track remains completely disconnected from the power loop when the relay is resting idle. It snaps shut and establishes a complete power path when the IN pin triggers the coil.

• COM (Common Terminal Reference): The primary high-current incoming supply terminal. Connect your main hot supply wire or positive utility feed rail straight into this block.

• NC (Normally Closed Contact): The auxiliary power routing line. This track remains continuously bonded to the COM terminal when the relay is resting idle, and breaks open the connection the moment the input signal activates the coil.

Common Applications

• Industrial Water Pump Management: Form a reliable automated power switch to cycle heavy-duty 24V agricultural or industrial fluid pumps without burning out digital sensor systems.

• Heavy-Duty Commercial Heating Arrays: Drive high-wattage environmental heating elements, localized industrial ovens, and melting chambers inside product curing stations safely.

• Centralized Safety Perimeter Sirens: Interface directly with non-contact proximity sensors to instantly trigger high-decibel warning horns or flashing strobe lights when a safety boundary is crossed.

• Educational Academic Vocational Labs: An exceptional instructional hardware tool for introducing advanced engineering students to industrial 24V control logic loops, optocoupler isolation physics, and high-current power safety.

Package Includes:

• 1 x 1 Channel 30A Relay Module with Optocoupler Isolation (24V High/Low Trigger Standard Profile)