Klixon
Klixon is the trademark for overtemperature switches (bimetal switches) from Metals & Controls, introduced in 1931 .
The company was bought by Texas Instruments in 1959 and sold to Bain Capital in 2006 . Since then it has been operating under the name Sensata and has produced a variety of similar products.
Overtemperature switches are also available from many other manufacturers - however, the brand name Klixon has become an almost generic term and is used in particular for bimetal switches in the refrigerator . There a bimetal switch serves as a self-resetting motor protection switch . The bimetal is heated by a heating wire through which the motor current flows and breaks the contact if the motor current remains too high after the start. It protects the motor from overload if the starting mechanism (see below) fails, or it avoids danger if the motor is defective. The bimetal of this switch is designed as a plate and therefore has a step behavior with hysteresis. The click sound that was clearly audible when switching was certainly eponymous.
The starting winding (short-circuit winding as phase shifter or auxiliary phase as in a shaded-pole motor ) of these compressor motors is short-circuited with a PTC element for starting . Self-heating due to the current induced in this auxiliary winding causes the element to have a high resistance and the motor then runs in single-phase. In the past, this purpose was served by a starter relay whose current winding was in the motor circuit; it only picked up when the starting current was increased and when the rated current was reached, it dropped out. Today, PTC switches are also referred to as start-up relays if they only contain one PTC element. Combinations of start-up switch and motor protection that function like a motor protection relay are often referred to as start-up relays. When the Klixon is switched off, you can tell that the engine or the starting device are defective.
Web links
Individual evidence
- ↑ KLIXON Trademark of SPENCER THERMOSTAT COMPANY. Justia Trademarks, accessed February 12, 2015 .
- ^ History of Our Company. (No longer available online.) Sensata, archived from the original on June 2, 2014 ; accessed on February 12, 2015 . Info: The archive link was inserted automatically and has not yet been checked. Please check the original and archive link according to the instructions and then remove this notice.
- ↑ typical u. a. for refrigerators from the GDR
