Protection Module

Reduces voltage spikes and interference when switching inductive loads, protecting relays, solenoids, motors, and control circuits. Operates on 5-400V AC or DC, combines an RC network with a varistor for overvoltage limitation, mounts quickly in parallel with the load on terminals or on PCB, compact size 30.5 x 14 mm for easy integration.

Protects equipment quickly against reverse power connection, using a MOSFET with minimal losses. It operates between 3 and 28 VDC, supports up to 12A continuous, offers a very low voltage drop below 50 mV, and an ultra-fast response under 1 us. Its compact 12x22 mm size makes it easy to integrate into projects with batteries, DC power supplies, and development boards.

It protects DC motors and circuits powered by 6-28V against overcurrent, short circuit and motor stall, also compatible with PWM control. It allows adjustment of the current threshold and trip delay, operates in automatic mode with timed reset or manually via jumper, and the power and alarm LEDs provide quick diagnosis.

Speaker protection board with a power-on delay of about 3 seconds and DC detection at about 1V, protects the speakers at power-on and in case of a fault on the amplifier output. Operates at 12-18VAC with separate power supply, supports 2 channels up to 300W each, uses dual Omron relays for safe switching, LED indicates operating status.

Stereo speaker protection module with delayed start, reduces pops at start by delaying approximately 3 seconds and disconnects at the appearance of DC voltage of approximately 1V. It uses a robust 15A relay, is compatible with most amplifiers and offers clear monitoring via status LED. Separate power supply 12-15VAC, compact dimensions 65x40mm.

It ensures one-way current flow between the MPPT controller and the battery, preventing reverse charging and backflow current in solar systems. It operates at 9-75V, supports 12A continuous and 20A peak, has a very low internal resistance of 4 mOhm for low losses and heating, minimal stand-by consumption and a compact format for easy integration.

Provides undervoltage and overvoltage protection for batteries, automatically stopping charging or discharging at set thresholds. The integrated display indicates the voltage in real time, you can adjust the limits and timing up to 999 minutes. Includes relay for load control and HIGH signal output for external relay, plus RX TX pins for serial monitoring. Compatible 1-60VDC, 6-40VDC power supply.

Provides overcurrent protection for AC circuits by automatic disconnection, with adjustable threshold up to 5A, simple 12VDC power supply and low consumption. Integrates 220VAC 10A relay to stop the line when the set current is exceeded, detection by built-in coil and quick connection by screw terminals, compact format for panels and industrial projects.

4-channel module for optical signal isolation, ideal for Arduino and other boards, allows safe control of loads at higher voltages without exposing the microcontroller to spikes and interference. Works with 3-5V inputs, switches separately powered outputs up to 24VDC, uses Toshiba TLP281 optocoupler, galvanically separates INPUT from OUTPUT for protection and stability in projects with motors, relays or servomotors.