Rotary Cam Switches Manufacturer Since 1981
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An AC switch is specific for welders, and is primarily used for an alternating current of 50 or 60 HZ, and is suitable for a variety of motors with a rated voltage under 440V.
To meet welder needs, the switch is designed with 6 poles on a 30° switching position. Cansen’s cam switches are easy to install and operate, and we also offer customization services if none of the installation sizes meet your needs.
Normal working conditions
- The temperature should be between +40℃ and -25℃, and the 24h average temperature should not be higher than +35℃.
- The installation altitude should be under 2000m.
- It cannot be switched when the welder is overloaded.
- When the temperature is +40℃, the humidity level should be under 50%, and the humidity level can be higher when temperatures are low. For example, 90% at 20℃.
- Class of pollution: 3
Technical parameter
| Type specification | KDHc-20 | KDHc-25 | KDHc-32 | KDHc-40 | KDHc-63 |
| Conventional thermal current Ith A | 20 | 25 | 32 | 40 | 63 |
| Rated working voltage Ue V | 240/440 | 240/440 | 240/440 | 240/440 | 240/440 |
| Rated working current Ie | |||||
| AC-21A | 20 | 25 | 32 | 40 | 63 |
| Operation cycle | |||||
| No-load | 8500 | 8500 | 8500 | 8500 | 8500 |
| On-load | 1500 | 1500 | 1500 | 1500 | 1500 |
| Total | 10000 | 10000 | 10000 | 10000 | 10000 |
| Operation frequency times/h | 120 | 120 | 120 | 120 | 120 |
Listed below are switches produced by Cansen. Please do not hesitate to contact us about customization or for more information.
KDHc-20 3K8121
- Rated working current: 20A
- Panel: 48*48mm
- Diagram code: 3K8121
- Color: Red
- Handle: I type
- IP rating: IP20
- Certification: UL, CE, TUV, CCC, ISO
| Description | KDHc-20 |
| Rated thermal current Ith A | 20 |
| Rated working voltage Ue V | 240/440 |
| Rated working current A | |
| AC-21A | 20 |
| Operation | |
| Non-load | 8500 |
| Load | 1500 |
| Total | 10000 |
| Operation frequency times/h | 120 |
KDHc-25 3K8121
- Rated working current: 25A
- Panel: 64*64mm
- Diagram code: 3K8121
- Color: Red
- Handle: B type
- IP rating: IP20
- Certification: UL, CE, TUV, CCC, ISO
| Description | KDHc-25 |
| Rated thermal current Ith A | 25 |
| Rated working voltage Ue V | 240/440 |
| Rated working current A | |
| AC-21A | 25 |
| Operation | |
| Non-load | 8500 |
| Load | 1500 |
| Total | 10000 |
| Operation frequency times/h | 120 |
KDHc-32 3K8121
- Rated working current: 32A
- Panel: 64*64mm
- Diagram code: 3K8121
- Color: Red
- Handle: B type
- IP rating: IP20
- Certification: UL, CE, TUV, CCC, ISO
| Description | KDHc-32 |
| Rated thermal current Ith A | 32 |
| Rated working voltage Ue V | 240/440 |
| Rated working current A | |
| AC-21A | 32 |
| Operation | |
| Non-load | 8500 |
| Load | 1500 |
| Total | 10000 |
| Operation frequency times/h | 120 |
KDHc-40 3K8121
- Rated working current: 40A
- Panel: 64*64mm
- Diagram code: 3K8121
- Color: Red
- Handle: B type
- IP rating: IP20
- Certification: UL, CE, TUV, CCC, ISO
| Description | KDHc-40 |
| Rated thermal current Ith A | 40 |
| Rated working voltage Ue V | 240/440 |
| Rated working current A | |
| AC-21A | 40 |
| Operation | |
| Non-load | 8500 |
| Load | 1500 |
| Total | 10000 |
| Operation frequency times/h | 120 |
KDHc-63 3K8121
- Rated working current: 63A
- Panel: 64*64mm
- Diagram code: 3K8121
- Color: Red
- Handle: B type
- IP rating: IP20
- Certification: UL, CE, TUV, CCC, ISO
| Description | KDHc-63 |
| Rated thermal current Ith A | 63 |
| Rated working voltage Ue V | 240/440 |
| Rated working current A | |
| AC-21A | 63 |
| Operation | |
| Non-load | 8500 |
| Load | 1500 |
| Total | 10000 |
| Operation frequency times/h | |
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