... RY thermal fuse (Thermal cutoff ) Non-resettable device,, Variety Tf:72-240C,tolerance:+0/-5C Current: ... blower ,microwave oven,refrigerator etc as heat protectionPass TUV,UL,PSE,EK, CCC SGS CertificationOrder InformationRYDXXX....XXX stand for ... 48460157RYD999970157RYD10410480157RYD1101109UL,TUV,PSE,EK certification