| Ampere: | 20A, 25A, 32A, 50A, 75A,100A |
| Voltage: | 110-690VAC |
| Features: | CE CCC ISO9001 certification |
| 300,000 times life span | |
| Operate frequency: 120 times per hour |
Structural features of rotary switch
Common band switches and shift switches of multimeters are rotary switches, and there are two structures: one is BBM (Break Before Make) contact type, which is characterized in that the moving contact first disconnects the front contact when changing positions After connecting the rear contact, there is a state of disconnection with the front and rear contacts: the other is the MBB (Make Before Break) contact type, which is characterized by a state where the moving contact is in contact with both the front and rear contacts when changing positions. . Then disconnect the front contact and keep in contact with the rear contact. In the circuit design, the appropriate rotary switch should be selected according to the purpose of the circuit and the safety of the circuit.LW31 series
Introduction
LW31 series rotary switches applied to switchgear and control of electric motors as well as to change over of electric circuits,it’s a good substitution for other cam switches.Technical parameters
| Description | LW31-20 | LW31-25 | LW31-32 | LW31-50 | LW31-75 | |||||||||||||||||||
| Rated thermal current ITH | A | 20 | 25 | 32 | 50 | 75 | ||||||||||||||||||
| Rated working voltage Ue | 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 current Le | ||||||||||||||||||||||||
| 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.Dimensions and installation
| 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. | |
