30A: This board uses oversized current (30A) pure copper foot relay and oversized thermistor NTC 10D 20 to effectively defend the machine from excessive starting current. AC 100V‑250V: Power supply voltage adaptation range of AC 110V to 250V, small and fine, simple installation. Scope of Application: Start protection board is suitable for high end voice frequency power input, or other large start up current machine applications. Use suitable for power up to 6600W. Simple Operation: This board does not require an auxiliary power supply, only two terminals, one for power input (before you can connect a switch control), and one for output load, easy to use. PCB Material: Start protection board is made of PCB material, long time use without deformation, thus ensuring long term stability. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-Minnanxin