Thermal sensor can be roughly classified into two
types according to its operation mechanism; break type and make type.Break
type (normally closed switch) turns "OFF" at operating temperatures
(predetermined temperature) or higher.Make
type (normally open switch) turns "ON" at operating temperatures
or higher.
The difference between break type and make type is
made by selecting and shape designing of thermal sensor elements such
as Thermorite and permanent magnet. The break type has ring shaped
Thermorite® with its both sides sandwiched by also ring shaped
permanent magnet. Inside the hole of the rings, a reed switch is inserted.
The make type also has the identical structure, but is has a gap spacer
inserted in the middle of Thermorite.
Break
type (normally closed switch) turns "OFF" at operating temperatures
(predetermined temperature) or higher.
Make
type (normally open switch) turns "ON" at operating temperatures
or higher.
