The 12 V 30 A 1-Channel ‘T’ Relay Module is a high-power switching module designed to control heavy electrical loads using low-voltage control signals. With a robust relay rated up to 30 A, it is suitable for controlling motors, heaters, pumps, lights, and other high-current AC or DC devices from microcontrollers or automation systems.
Core Module Specifications
• Relay Type: Electromechanical power relay
• Channels: 1
• Coil Voltage: 12 V DC
• Contact Rating: Up to 30 A
• Contact Configuration: COM, NO, NC
Electrical & Interface
• Operating Voltage (Relay Coil): 12 V DC
• Trigger Voltage: TTL compatible (via onboard driver circuit)
• Control Interface: IN, VCC, GND
• Load Type: AC or DC (within relay rating)
• Isolation: Optocoupler / transistor driver (module dependent)
Performance Characteristics
• Capable of switching high-current loads
• Fast and reliable mechanical switching
• Suitable for frequent ON/OFF operations
• Stable operation with proper power supply
Physical Characteristics
• Module Type: PCB-mounted relay module
• Terminal Type: Screw terminals for load connection
• Construction: High-current copper tracks
• Compact and rugged design
Compatibility
• Arduino Uno / Nano / Mega
• ESP8266 / ESP32
• STM32 and other microcontrollers
• PLC and automation control systems
Key Advantages
• High 30 A switching capacity
• Simple control using digital signals
• Supports both AC and DC loads
• Easy integration into control panels
Technical Insights
• Relay provides electrical isolation between control and load
• Contact life depends on load type and switching frequency
• Flyback protection included on most modules
• Not suitable for silent or very high-speed switching
Applications
• Motor and pump control
• High-power lighting systems
• Heaters and power tools
• Home and industrial automation
• Battery and power management systems
Pro Tip
• Ensure load current does not exceed relay rating
• Use proper wire gauge for high-current terminals
• Add snubber circuits for inductive AC loads
• Mount securely to avoid vibration damage
Package Includes
• 1 × 12 V 30 A 1-Channel ‘T’ Relay Module