Reactor chiller with reliable security protection devices, including: high and low voltage protection, exhaust overheating protection, compressor motor overheating protection, overcurrent protection, the antifreeze temperature protection, water protection, emergency stop switch, a sense of The thermo fusible plug, safety valve. Reactor the the chiller host compressors are used imported the Germany Bitzer Bitzer, Copeland Copeland, Taiwan Hanbell brand; imported semi-hermetic screw compressor or hermetic scroll compressor chiller.