This high-power soft start circuit for amplifiers
This high-power soft start circuit board is designed to safely control large electrical loads, preventing inrush current damage when powering on. Its sleek black rectangular design features metallic accents, such as a shiny relay and silver electrolytic capacitors, combined with organized component placement for a professional appearance. The inclusion of colorful resistor bands adds subtle vibrancy to its high-tech aesthetic. With robust construction, this board offers reliable protection for your high-capacity power supplies, especially in audio equipment or heavy machinery. Its minimalist yet industrial style echoes durability and precision, making it an essential upgrade for your power setup. Picture yourself confidently powering your equipment, knowing this device handles startup surges seamlessly and ensures longevity for your components.
Keys features of this high-power soft start circuit board
- This high-current soft start uses a 100A pure copper pin relay and two NTC thermistors (20D-20) to reduce startup surge, protecting connected devices from damaging inrush currents during startup.
- Designed for applications up to 2400W, it effectively works within a continuous load of 1400W, ideal for high-end audio power supplies, large amplifiers, or other equipment with high starting current.
- No auxiliary power supply needed; connects via two terminals — one for power input from a switch and the other for load connection — simplifying installation and use.
- Operates across AC voltages from 150V to 280V, with a typical soft start time of around 3 seconds; relay engages after approximately 2 seconds, providing smooth power-up transition.
- Includes a sealed power relay and a high-frequency filter module, ensuring durability, noise suppression, and efficient operation even in demanding environments.
- Component specifications: relay rated at 100A, thermistors model 20D-20, operating voltage AC150V-280V, featuring a robust black PCB with electrolytic capacitors, resistors, diodes, and inductors for optimal performance.
This soft start circuit is essential—order now and protect your equipment
Enhance the longevity of your high-power devices with this reliable soft start circuit board. Its advanced components, professional design, and ease of installation make it an indispensable addition for any high-capacity power setup. Imagine powering your audio system or machinery confidently, knowing it’s protected from surge damage. Whether for home audio, professional studio, or industrial application, this device ensures your equipment starts smoothly and functions flawlessly. Invest today and experience the benefits of a safer, more durable power system designed specifically for demanding environments.

















