The TC series circuit breaker is currently the smallest and lightest aircraft circuit breaker available.
They represent the 'most advanced' protection of today's aerospace power systems. They are lightweight and compact, making them particularly suitable for aircraft, aviation electronics, and electronic systems,The Klixon trademark sets the standard for aviation circuit breakers.
Despite its small size, the TC series exceeds the strict military specifications for durability and reliability, providing standard current ratings of 1-35 amperes.
The following is a comparison of different series of application fields, military standards, and factory order numbers.
| Circuit breaker serial number | application area | Factory order serial number | Military identification number | Series number | Military identification number | Series number |
| 2TC | Aircraft | MS 3320 | MS 3320 | 2TC2 | MS 26574 | Feb-74 |
| 3TC | MS 14105 | MS 3320L | 2TC27 | MS 26574A | Apr-74 | |
| 5TC | Aircraft | –– | MS 3320V | 2TC63 | MS 26574L | seven thousand two hundred and seventy-four-70 |
| 6TC | Aircraft | MS 14154 | MS 14105 | 3TC2 | MS 24509A | seven thousand two hundred and seventy/1/1 |
| 9TC | MS 14153 | MS 14105L | 3TC27 | MS 24509B | 7270/7/1 | |
| 2TC49 | Aircraft | M5809/1 | MS 14153 | 9TC2 | MS 24510A | seven thousand two hundred and seventy-one/8/1 |
| 3TC7 | Aircraft | MS 25244 | MS 14154 | 6TC2 | MS 24510B | 7271/3/1 |
| Dec-52 | Aircraft | MS 24571 | MS 14154L | 6TC37 | MS 25244 | 3TC7 |
| 6752-100 | MS 25361 | MS 14154V | 6TC63 | |||
| 6752-305 | MS 5809/1 | 2TC49 | ||||
| 7274 | Aircraft | MS 26574 | MS 24571 | Dec-52 | ||
| MS 22073 | MS 24571V | Dec-52 | ||||
| 7277 | Aircraft | –– | MS 25361 | 6752-100 | ||
| 7270 | Aircraft | MS 24509 | MS 25361V | 6752-102 | ||
| 7271 | MS 24510 | MS 22073 | Nov-74 | |||
| 20TC2 | Aircraft | –– | MS 22073V | 7274-69 | ||
| 3SB | Simulator |