JRS2 series thermal over load relay is applied in circuit of AC50/60Hz, main circuit rated voltage  660V and below, rated current 0.1 to 93A, provide circuit and AC motor over load and breaking phase ,starting time too long and locked rotor time too long protection. Provide phase cutting protection,temperature implement,adjust current,automatic recover and manul recover selection,moving indicat signal, moving close,moving breaking aux. contact insulation derive, mounting area small, mounting way various etc function and characteristic, provide test bottom and stop bottom. Can take move flexibility test.  The product accord with GB14048.4-2003.