Differential magnetothermal switch, 1P+N 4.5 kA 30 mA 220 V, occupies 1 DIN module, available 6 A 10 A 16 A 25 A (1 P+N 6 A) : Amazon.com.be: Industrial & Scientific
Magneto-responsive thermal switch for remote-controlled locomotion and heat transfer based on magnetic nanofluid - ScienceDirect