The selection of the connecting wire of the relay outlet end. Must be selected in strict accordance with the regulations. This is because the material of the wire and its wire diameter can affect how much heat is transferred from the end of the heating element to the outside. If the wire is too thin, the axial heat conduction is poor, and the thermal relay may move in advance; otherwise, the wire is too thick, the axial heat conduction is fast, and the thermal relay may delay the action. According to the regulations: the wire connecting the outlet of the thermal relay should be copper wire. If the wire is to be used, the cross-sectional area of ​​the wire should be enlarged. Other than that. The outlet end screw should also be tightened to prevent the contact resistance from increasing due to the looseness of the screw, affecting the temperature rise of the heating element, and eventually the protection characteristics may be unstable and cause malfunction. General thermal relay connecting wires can be selected as follows: (1) The rated current of the thermal relay is below 10A , and 2.5mm2 single-core plastic copper wire can be used . ( 2 ) The rated current of the thermal relay is below 20A , and 4mm2 single-core plastic copper wire can be used . ( 3 ) When the rated current of the thermal relay is 60A , 16mm2 multi-strand rubber copper core cord can be used. ( 3 ) When the rated current of the thermal relay is 150A , a 35mm2 multi-strand rubber core cord can be used. It should be noted that the connecting wires of the thermal relay also have a heat conduction function in addition to being electrically conductive. Therefore, the connecting wire should not be too thin to prevent the heat from being too fast. Piston Air Winch,Portable Air Winch,Piston Motor Winch,Piston Pneumatic Winches RUDONG HONGXIN MACHINERY CO.,LTD , https://www.rdhxmfr.com