The T Relay 5V 30A is a heavy-duty electromagnetic power relay designed to control high-current loads using a low-voltage 5V signal. It is commonly used in power switching applications like inverters, battery systems, high load automation, motor control, and industrial DIY projects where normal 10A relays are not enough.
Core Component Features
• Relay Type: Electromagnetic Power Relay
• Coil Voltage: 5V DC
• Contact Rating: Up to 30A (High current switching)
• Contact Type: SPDT / 1 Changeover (COM, NO, NC) (varies by model)
• Switching Function: Controls AC/DC loads using low power signal
Electrical & Interface
• Coil Voltage: 5V DC
• Coil Control: Works with transistor/driver from Arduino, ESP, PLC etc.
• Contact Current: Up to 30A (depends on load type)
• Contact Voltage: 250VAC / 30VDC (typical rating)
• Isolation: Electrical isolation between control side and load side
Performance & Load Handling
• Best For: High current devices like heaters, motors, pumps, battery loads
• Reliable switching for power applications
• Suitable for frequent ON/OFF switching (with proper protection)
• Supports AC loads and DC loads (DC derating recommended)
Physical & Integration
• Compact cube type relay body
• PCB mount type pins
• Markings on top show coil and contact diagram
• Easily used in custom relay boards and control circuits
Applications
• High power load switching (up to 30A)
• Battery charger / inverter control
• Motor and pump control circuits
• Smart home high load automation
• DIY power distribution switching
Pro Tip
• Don’t drive this relay directly from Arduino pin — use NPN transistor/MOSFET + flyback diode
• For inductive loads (motor/pump), use snubber/RC or MOV to reduce contact sparking
• For continuous 30A load, use thick PCB tracks or external wiring (not thin tracks)
Package Includes
• 1 × T Relay 5V 30A Power Relay