Chemical Watch Forum

According
to the statistics, over- temperature has always occupied an important
position.in the electrical damage reason ,Therefore,over-temperature protection
device for electrical has almost become the necessary color:black" lang="EN-US">component color:black;mso-font-kerning:0pt" lang="EN-US">in all appliances .At
present, most of the electrical over temperature protector are hot melt type
over-temperature protection.We called it fuse in another word, the principle is
that when the fuse current through the exceeded limit value, the fuse fused
because the temperature rise, in addition of below the rated capacity,the heat
generation and heat balance,the fuse temperature did not reach the melting
temperature, it will not break. Facts prove that, fuse to protect electrical
effect is very obvious. However, this kind of fuse protection, it need to be
replaced once the fuse break, it’s troublesome operation and economy.In order to overcome this fuse
protection faults, some people have invented a relay type over-temperature
protection device. Relay protection at rated temperature can automatically
power off, disconnect just press the reset lever can be used, without
replacement, with simple operation and economy.The key to
relay protection  is the thermal
particulate matter of 4 chloro cinnamic acid. 4 - chloro cinnamic acid is the colorless
crystals,two kinds : cis and trans. Soluble in ethanol, CIS trans melting point
melting point of 110.5 DEG C, 249-250 C.

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