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LW28 Universal Changeover Switch





General

LW28 Series Universal changeover switch mainly used for AC 50/60Hz, rated voltage up to 380V and below, DC voltage up to 220V, rated current to 160A electrical circuit for manually infrequent making or breaking the circuit for the purposes of control and conversion ,can also controlling three-phase asynchronous motors and circuit directly as the purposes of master control and measurement. The products widely used, instead of the various national switch, can be used as the circuit control switch, measuring equipment switches, motor control switches and the master control switch,and welding machine switch and so on.
standard: IEC60947-3

Operating conditions

1. The ambient air temperature does not exceed +40℃, the average temperature within 24 hours and not more than +35℃.The ambient air temperature is not lower than -5℃ .
2. Installation site altitude does not exceed 2000m
3. The relative humidity of the air no more than 50% when the maximum
temperature is +40℃ and at a lower temperature allows a higher relative
humidity, such as when temperature is 20℃ the relative humidity reaches 90%.
4. Special measures should betaken for condensation occassionally due to temperature changes.

Selection

For use to master control

LW28 - 20 / 2P   2
LW28 Rated thermal current Poles Station
Universal
changeover switch
10:10A
20:20A
25:25A
32:32A
63:63A
125:125A
160:160A
200:200A
315:315A
400:400A
2P
3P
4P
5P
6P
2
3
4
5
6
7
 
V: Voltage meter
A: Ammeter

Note:If there are special wiring requirements, please provide the wiring diagram or contact us

Technical data

The following table shows the relevant dimension of the transfer switch

Table 2

Model Ith
A
Ui
V
Ue
V
AC-21A AC-22A AC-23A AC-2 AC-3 AC-4 AC-15 DC-13
le
A
le
A
le
A
kW le
A
kW le
A
D
kW
le
A
kW le
A
le
A
LW28-10 10 660 240   10 7.5 1.8 7.5 2.5 5.5 1.5 1.75 0.37 2.5  
10 660 440   10 7.5 3.0 7.5 3.7 5.5 2.2 1.75 0.55 1.5  
LW28-20 20 660 440   20 15 7.5 15 7.5 11 5.5 3.5 1.5 4  
20 660 240                     5 1
20 660 120                       5
LW28-25 25 660 440   25 22 11 22 11 15 7.5 6.5 3 5  
25 660 240                     8 1.5
25 660 120                       9
LW28-32 32 660 440   32 30 15 30 15 22 11 11 5.5 6  
32 660 240                     14 11
32 660 120                       25
LW28-63 63 660 440   63 57 30 57 30 36 18.5 15 7.5    
63 660 120                       55
LW28-125 125 660 440   125 90 45 90 45 75 30 30 12   90
LW28-160 160 660 440   160 135 75 135 55 95 37 55 15   110
Model Panel
Specification
Dimensions(mm) Model Panel
Specification
Dimensions(mm)
A B C L A B C L
LW28-10 M0 Square 30 30 28 22+8n   M2 Square 64 64 58 29.2+12.8n
  M1 Square 48 48 43 22+9.6n LW28-32 M2 Rectangle 64 80 58 29.2+12.8n
LW28-20 M2 Square 64 64 43 25+9.6n   M3 Square 88 88 58 29.2+12.8n
  M2 Rectangle 64 80 43 25+9.6n   M2 Square 64 64 66 29.2+21.5n
  M2 Square 64 64 60 42.5+12.6n LW28-63 M2 Square 64 80 66 29.2+21.5n
LW28-20c M2 Rectangle 64 80 60 42.5+12.6n   M3 Square 88 88 66 29.2+21.5n
  M3 Square 88 88 60 42.5+12.6n LW28-125 M3 Square 88 88 84 35+26.5n
  M1 Square 48 48 45.2 23+12.8n LW28-160 M3 Square 88 88 88 35+32.5n
LW28-25 M1 Rectangle 48 60 45.2 23+12.8n LW28-315 M4 Square 130 130 126 39.5+38.5n
  M2 Square 64 64 45.2 26.5+12.8n            
  M2 Rectangle 64 80 45.2 26.5+12.8n            


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