Magnetic Induction Heater Kit 1200W Handheld Automotive Bolt Buster Heat Induction Tool for Rusty Screw with 4 Coil Item Type: Magnetic Induction Heater Kit Maximum Output Current: 150A Operating Frequency: 50 ~ 60Hz Rated Power: 1200W Heating Temperature: 800℃ Heating Time for 800℃: 5 ~ 40 Seconds(the larger the item, the longer the time) Diameter of Heating Bolt: Coil can be covered, coil can be adjusted freely Ambient Temperature: -40℃ to 60℃ Relative Humidity: <95% RH Atmospheric Pressure: 86KPa ~ 100KPa Function: 1. With soft start function, long service life in the case of frequent start 2. With IGBT overcurrent protection function 4. With IGBT overtemperature protection function 5. With heating coil short circuit protection function 6. With heating coil open circuit protection function 7. Full bridge series resonant circuit topology, strong interference resistant ability 8. Use high performance IGBT driver chip drive, accurate drive and output waveform 9. Automatic identification of load and phase lock function, so that the load end to get a higher power factor, but also make the circuit control in the weak inductive area of high efficiency work 10. Several electromagnetic heating controllers are installed in parallel on the same heating pipe without interference 11. Good Power Saving Effect: Compared with the current use of electric heating ring. power saving can reach more than 30% 12. Easy Installation: Can be connected to the drum type and plate type and so on the structure of induction coil