| In force components | 
| Number 
 | Title | Status | 
| K.45 (11/22) 
 | Resistibility of telecommunication equipment installed in the access and trunk networks to overvoltages and overcurrents | In force 
 | 
| 
 | 
| Superseded and Withdrawn components | 
| Number 
 | Title | Status | 
| Guide  (04/2012) 
 | Guide on the use of the overvoltage resistibility for Recommendations ITU-T K.20, K.21 and K.45 | Superseded 
 | 
| K.45 (02/00) 
 | Resistibility of access network equipment to overvoltages and overcurrents | Superseded 
 | 
| K.45 (07/03) 
 | Resistibility of telecommunication equipment installed in the access and trunk networks to overvoltages and overcurrents | Superseded 
 | 
| K.45 (04/08) 
 | Resistibility of telecommunication equipment installed in the access and trunk networks to overvoltages and overcurrents | Superseded 
 | 
| K.45 (11/11) 
 | Resistibility of telecommunication equipment installed in the access and trunk networks to overvoltages and overcurrents | Superseded 
 | 
| K.45 (04/15) 
 | Resistibility of telecommunication equipment installed in the access and trunk networks to overvoltages and overcurrents | Superseded 
 | 
| K.45 (06/16) 
 | Resistibility of telecommunication equipment installed in the access and trunk networks to overvoltages and overcurrents | Superseded 
 | 
| K.45 (12/16) 
 | Resistibility of telecommunication equipment installed in the access and trunk networks to overvoltages and overcurrents | Superseded 
 | 
| K.45 (07/17) 
 | Resistibility of telecommunication equipment installed in the access and trunk networks to overvoltages and overcurrents | Superseded 
 | 
| K.45 (07/18) 
 | Resistibility of telecommunication equipment installed in the access and trunk networks to overvoltages and overcurrents | Superseded 
 | 
| K.45 (10/19) 
 | Resistibility of telecommunication equipment installed in the access and trunk networks to overvoltages and overcurrents | Superseded 
 | 
| K.45 (2019) Amendment 1 (06/20) 
 |  | Superseded 
 |