LW31 series Rotary Changeover Switch Cam Switch
General Features:
1. The most economical way for switching electrical loads.
2. Made of the best materials with high mechanical, electrical and thermal resistance.
3. Double-break bimetallic contacts made of silver alloy and Copper.
4. Terminals with screws provided with cable clamp.
5. Fast and easy installation and wring.
6. Capability to produce special Cam Switches based on customer requirements.
Advantage:
- LW31 series Rotary Changeover Switches have the characteristics of small size, multi-function, compact structure, exquisite material selection, good insulation, flexible conversion operation, safety and reliability, and novel appearance.
- LW31 series Rotary Changeover Switches can produce transform angle: 30°/45°/60°/90°
Description:
LW31 series Rotary Changeover Switches applied to Complete electrical switchgear and Three-phase asynchronous motor load start shift steering; For using as main circuit and auxiliary circuit conversion. It’s a good substitution for other cam switches
Technical parameters
| Description | LW31-20 | LW31-25 | LW31-32 | LW31-50 | LW31-75 |
| Rated thermal currentITH | A | 20 | 25 | 32 | 50 | 75 |
| Rated working voltageUe | V | 110 | 220 | 440 | 110 | 220 | 440 | 500 | 690 | 110 | 220 | 440 | 500 | 690 | 110 | 220 | 440 | 500 | 690 | 110 | 220 | 440 | 500 | 690 |
| Rated working currentLe | | | | | | | | | | | | | | | | | | | | | | |
| AC-21A | A | | | 20 | | | | | 25 | | | | | 32 | | | | | 50 | | | | | 70 |
| AC-22A | A | | | 16 | | | | | 20 | | | | | 32 | | | | | 40 | | | | | 63 |
| DC-20 | A | 20 | | 25 | | | | | 32 | | | | | 50 | | | | | 75 | | | |
| power | P | | | | | | | | | | | | | | | | | | | | | | | |
| AC-23A | KW | | 5 | 7.5 | | 7.5 | 11 | | 15 | | 11 | 18.5 | | 22 | | 15 | 22 | | 30 | | 18.5 | 30 | | 37 |
| AC-3 | KW | | 4 | 5.5 | | 5.5 | 7.5 | | 11 | | 7.5 | 15 | | 18.5 | | 11 | 18.5 | | 22 | | 15 | 22 | | 30 |
| AC-4 | KW | | 2.2 | 3 | | 2.2 | 4 | 4 | | | 3 | 5.5 | 5.5 | | | 5.5 | 7.5 | 9 | | | 7.5 | 11 | 15 | |
| DC-23 | KW | 0.77 | 1.2 | | 2 | 2.2 | | | | 2 | 2.2 | | | | 3 | 6 | | | | 4 | 8 | | | |
Mechaical life
Mechanical life without load:0.3×106 times,operation frequency is 120 times/h.
Mechanical life with load:0.6×104 times operation frequency is 120 times/h.
| Description | Dimensions(mm) | Installation(mm) |
| A | C | H | L | E | D1 | D2 | S | F | G | D3 | T |
| LW31-20 | □54 | Φ44 | 38 | 25+12n | 32 | Φ9.5 | Φ3.2 | 1.5 | 35 | Φ45 | Φ4.5 | 6 |
| LW31-20 | □72 | Φ44 | 38 | 25+12n | 32 | Φ9.5 | Φ3.2 | 1.5 | 58 | Φ45 | Φ4.5 | 6 |
| LW31-25 | □72 | Φ59 | 36 | 25+13n | 33 | Φ9.5 | Φ3.2 | 1.5 | 58 | Φ64 | Φ4.5 | 6 |
| LW31-25 | □105 | Φ59 | 53 | 23+13n | 33 | Φ9.5 | Φ3.2 | 1.5 | 85 | Φ64 | Φ4.5 | 6 |
| LW31-32 | □72 | Φ59 | 36 | 23+18n | 33 | Φ9.5 | Φ3.2 | 1.5 | 58 | Φ64 | Φ4.5 | 6 |
| LW31-32 | □105 | Φ59 | 53 | 23+18n | 33 | Φ9.5 | Φ3.2 | 1.5 | 85 | Φ64 | Φ4.5 | 6 |
| LW31-50 | □105 | Φ80 | 53 | 34+18n | 46 | Φ13 | Φ5.3 | 3 | 85 | Φ90 | Φ5.5 | 8 |
| LW31-75 | □105 | Φ80 | 53 | 34+27n | 46 | Φ13 | Φ5.3 | 3 | 85 | Φ90 | Φ5.5 | 8 |
Normal working conditions:
1. Working temperature: -25°C~+40°C;the average temperature mustn’t be pass 35°C
2. Working height: ≤2,000m
3. Relative humidity: ≤50% with highest temperature +40°C,but allow higher humidity with low temperature less than 40°C.(eg. humidity 90%----teperature20°C)
Classification
1. Classified by utilization, control and load switch.
Motor switch Control switch
2. Classified by Applications
Complete electrical switchgear;Three-phase asynchronous motor load start shift steering;Used as main circuit and auxiliary circuit conversion
Further information:
1. Plastics materials: all raw materials are brand-new and second-hand materials are forbidden. Furthermore some of them are supplied by super branding companies like DSM, Mitsubishi.
2. There is just one level of quality as A in MEIHENG and we are aim to provide the excellent articles to our clients and help them gain more market shares.
3. ODM: we are providing ODM services to the super companies (more than 15) who are top-10 electrical industrial companies in their country. Just show us your ideas and we will present a solution.
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