working conditions
- Ambienttemperature DONOTexceed40℃, and DO NOT Less than -25℃, and theaverage temperature, measured over a period of 24 hours, DO NOT exceed 35℃
- Should not be installed over 2000m about sea level.
- The switch should not change the circuit when the switch is working with load.
- The humidity should not exceed 50% when the ambient temperature is 40℃, and higherhumidity is allowed for lower temperature.
- A clean environment was required.
Dimensions and installation
Designation

CIas sifi cation
- Classified by current ratings: 20A,25A,32A,40A,63A
- Classified by handle position, there are 12 handle positions.
- Classified by type of handle, R type, l type, B typ
R type





Technical parameters
| Description | KDHC-20 | KDHC-25 | KDHC-32 | KDHC-40 | KDHC-63 | |
| Rated thermal current Ith A | 20 | 25 | 32 | 40 | 63 | |
| Ratedworking voltage ue V | 240/440 | 240/440 | 240/440 | 240/440 | 240/440 | |
| Rated working cu rent le | ||||||
| AC-21A A | 20 | 25 | 32 | 40 | 63 | |
| operation | ||||||
| Non-load | 8500 | 8500 | 8500 | 8500 | 8500 | |
| Load | 1500 | 1500 | 1500 | 1500 | 1500 | |
| Total | 10000 | 10000 | 10000 | 10000 | 10000 | |
| operation frequency times/h | 1 20 | 1 20 | 1 20 | 1 20 | 1 20 | |
Dimensions and installation


| Description | ||||||||
| Lmax | Imax | A | E | F | G | G1 | G2 | |
| KDHC-20 | 25+1 2n | 38 | 口48 士0.31 | 32 ± 0. 16 | 口36 ±0.31 | 3.5 | 4.5 | |
| KDHC-25 | 34+ 13.3n | 37 | 口64±0.37 | 36 士0.31 | 口48 ±0.31 | 4.5 | 4.5 | |
| KDHC-32 | 34+ 13.3n | 37 | 口64±0.37 | 36 ±0.31 | 口48 ±0.31 | 4.5 | 4.5 | |
| KDHC-40 | 34+ 1 7.5n | 37 | 口64±0.37 | 36 士0.31 | 口48 士0.31 | 4.5 | 4.5 | |
| KDHC-63 | 34+ 1 7.5n | 37 | 口64±0.37 | 36 ±0.31 | 口48 ±0.31 | 4.5 | 4.5 | |
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