... , overheat, over/under Volt., phase loss, Phase sequence protector)MPT use PC to detect voltage’s waveform, size, Phase ... protection. (overload, overheat, over/under Volt., phase loss, Phase sequence protector) MPT use PC to detect voltage’s waveform, size, Phase ... PTC Temperature Detection Circuit: Meets DIN44081/082 Standards, 1-9 line PTC detected. 25°C, (R25,R)<1.8KΩ, (Rtrip)=4 ...