◆Introduction  The KDHc electric welding machine switch applied to AC 50Hz or 60Hz,440V and below 200A and below,forcontrol of welding machine and control of main circuits as well.
◆Technical parameters 
| 
 Description  | 
 KDHc-20  | 
 KDHc-25  | 
 KDHc-32  | 
 KDHc-40  | 
 KDHc-63  | 
| 
 Rated thermal current  | 
ITH | 
 A  | 
 20  | 
 25  | 
 32  | 
 40  | 
 63  | 
| 
 Rated workig voltage  | 
Ue | 
 V  | 
 240/440  | 
 240/440  | 
 240/440  | 
 240/440  | 
 240/440  | 
| 
 Rated working current  | 
Le | 
 | 
 | 
 | 
 | 
 | 
 | 
| 
 AC-21A  | 
  | 
 A  | 
 20  | 
 25  | 
 32  | 
 40  | 
 63  | 
| 
 Operation  | 
  | 
 | 
 | 
 | 
 | 
 | 
 | 
| 
 non-load  | 
  | 
 | 
 8500  | 
 8500  | 
 8500  | 
 8500  | 
 8500  | 
| 
 load  | 
  | 
 | 
 1500  | 
 1500  | 
 1500  | 
 1500  | 
 1500  | 
| Total | 
  | 
  | 
10000 | 
10000 | 
10000 | 
10000 | 
10000 | 
| 
 frequency  | 
  | 
 | 
 120  | 
 120  | 
 120  | 
 120  | 
 120  | 
◆Dimensions and installation 
 
| 
 Deiscription  | 
 Diemnsions(mm)    | 
 Installation(mm)
   | 
| Lmax | 
Imax | 
A | 
E | 
F | 
G | 
G1 | 
G2 | 
| 
 KDHc-20  | 
25+12n | 
38  | 
 □48±0.31  | 
32±0.16 | 
36±0.31 | 
Φ9.5 | 
Φ3.5 | 
 Φ4.5  | 
| 
 KDHc-25  | 
34+13.3n | 
37 | 
 □64±0.37  | 
36±0.31 | 
48±0.31 | 
Φ9.5 | 
Φ4.5 | 
 Φ4.5  | 
| 
 KDHc-32  | 
34+13.3n | 
37 | 
 □64±0.37  | 
36±0.31 | 
48±0.31 | 
Φ9.5 | 
Φ4.5 | 
 Φ4.5  | 
| 
 KDHc-40  | 
34+17.5n | 
37 | 
 □64±0.37  | 
36±0.31 | 
48±0.31 | 
Φ9.5 | 
Φ4.5  | 
 Φ4.5  | 
| 
 KDHc-63  | 
34+17.5n | 
37 | 
 □64±0.37  | 
36±0.31 | 
48±0.31 | 
Φ9.5  | 
Φ4.5 | 
 Φ4.5  |