3 pole rotary cam switch 2 position, frequency 50Hz, rated current 20A, fast disconnection, small size, reliable performance, compact structure and easy operation.
Specification:
Model | CHN-WS3020 |
Rated Thermal Current | 20A |
Rated Working Voltage | 240V | 440V |
Rated Working Current | AC-21A | 20A | 20A |
AC-22A | 20A | 20A |
AC-23A | 15A, 4 kW | 15A, 7.5 kW |
AC-3 | 11.7A, 3 kW | 11.7A, 5.5 kW |
Pole | 3 Pole/4 Pole |
Position | 2 Position |
Type of Current | AC 50Hz |
Positions of Main Contact | On or Off |
Rated Duty | 8 Hours every day, operational efficiency 30 times/hour |
Dimensions
1. Default version

Overall Dimension (mm) | Mounting Dimension (mm) |
A | B | C | K | L | E | F | D1 | D2 |
64 | 42 | 54 | 13.5 | 61 | 48 | 48 | φ10 | φ4.2 |
2. IP65 version

Overall Dimension (mm) | Mounting Dimension (mm) |
D3 | D4 | M | N | P | A1 | A2 | B | D2 |
φ23 | φ19 | 85 | 83 | 160 | 150 | -- | -- | φ4.2 |
Rotary Switch Wiring Diagram
Working Conditions
1. The ambient air temperature ≤ +40 ° C, and the average temperature within 24 h ≤ +35 ° C.
2. The lower limit of ambient air temperature ≤ -25 °C.
3. The altitude of the installation location is ≤2000m.
4. When the maximum temperature is +40 °C, the relative humidity of the air does not exceed 50%, and the higher relative humidity can be allowed at lower temperatures, for example, 90% at 20 °C. Special measures should be taken for condensation that occasionally occurs due to temperature changes.
Rotary switch 2 position, 3 pole or 4 pole is available, 20amp, IP65, mainly used for ac 50Hz, cam switch can be used for ventilation equipment, air conditioning and water pump system of the main switch, but also directly control the small ac motor.