75A 7 Position LW31 series Rotary Changeover Switch Cam Switch 4 Sections
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
General Features:
1. Wide range of function for switching, it has 20A,25A,32A,50A,75A
2. Capability for switching of resistive, or inductive, or mixed loads.
3. The most economical way for switching electrical loads.
4. Made of the best materials with high mechanical, electrical and thermal resistance.
5. Double-break bimetallic contacts made of silver alloy and Copper.
6. Terminals with screws provided with cable clamp.
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 have many different types of operation handle to choose by customer(“R”,”I” types)
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
Product Tags:
|
|
Small Safety Rotary Cam Changeover Switch 4 Sections Three Phase Motor Load Images
|
