hi folks,i got this small surge protector from a friend who moved and
am deciding which appliance (fridge/tv )would benfit most from it.

so i decided to open it up to try and understand how it works.
below are some small photos i took of the inside.

from my limited understanding of electronics the top part is for the
power protection and the lower part for the telephone line
protection.the blue components (looks like a cap & has the lettering
X1Y2 CE472M on it) normally do not conduct but on excessive current
will fuse and shunt current to earth prong.

what is the name of the blue component?how can i tell how sensitive it
is (how much protection it will give) so i can choose where to put it.

thanks
C

http://geocities.com/chevychasen/circuit1_.JPG 28k
http://geocities.com/chevychasen/unit_.JPG 16k
http://geocities.com/chevychasen/circuit2_.JPG 51k
http://geocities.com/chevychasen/circuit2parts_.JPG 56k