Rotary Cam Switches
ROTARY CAM SWITCHES ARE DESIGNED FOR UNIVERSAL APPLICATION. THEY MAY BE USED FOR CONTROL SWITCHING, INSTRUMENTATION SWITCHING, BREAKER CONTROL, MOTOR CONTROL AND MAINS SWITCHING.SHIRKE
ROTARY CAM SWITCHES CONSIST OF ONE OR MORE SWITCH STAGES. EACH STAGES CONTAINS TWO ISOLATED DOUBLE-BREAK SILVER ALLOY CONTACTS AND ARE OPERATED BY CAMS WHICH PROVIDES AN INFINITE VARIETY OF CONTACT ARRANGEMENTS.SHIRKE
THE CHART BELOW SHOWS VARIOUS RATINGS OF SWITCHES MANUFACTURED BY US.
|
Characteristics |
SC 6 |
SC 10 |
SC 16 |
SC 20 |
SC 25 |
SC 32 |
SC 40 |
|
Packets |
1-12 |
1-12 |
1-12 |
1-12 |
1-12 |
1-12 |
1-12 |
|
Poles |
1-24 |
1-24 |
1-24 |
1-24 |
1-24 |
1-24 |
1-24 |
|
Positions |
2-12 |
2-12 |
2-12 |
2-12 |
2-12 |
2-12 |
2-12 |
|
Indexing Angle |
30, 45, 60, 90 |
30, 45, 60, 90 |
30, 45, 60, 90 |
30, 45, 60, 90 |
30, 45, 60, 90 |
30, 45, 60, 90 |
30, 45, 60, 90 |
|
Electrical Ratings |
|||||||
|
Continuous Rating (AC) |
10A - 240V |
10A - 240V |
20A - 440V |
20A - 440V |
32A - 440V |
32A - 440V |
40A - 440V |
|
Interrupting Current (AC) |
|||||||
|
240 V |
6A |
10A |
|||||
|
440 V |
16A |
20A |
25A |
32A |
40A |
||
|
Overload Current (AC) |
|||||||
|
50 oper.for50msec . |
|||||||
|
240V AC |
48A |
80A |
|||||
|
440V AC |
160A |
160A |
260A |
260A |
260A |
||
|
Dielectric Strength |
1500V RMS |
1500V RMS |
2500V RMS |
2500V RMS |
2500V RMS |
2500V RMS |
2500V RMS |
|
Insulation Resistance |
>500 Mhms |
>500 Mhms |
>500 Mhms |
>500 Mhms |
>500 Mhms |
>500 Mhms |
>500 Mhms |
|
Contact Resistance |
<25 mohms |
<25 mohms |
<25 mohms |
<25 mohms |
<25 mohms |
<25 mohms |
<25 mohms |
|
Horse Power 3ph Ratings |
|||||||
|
220/240V AC |
1 HP |
1.5 HP |
|||||
|
440/460V AC |
3 HP |
5 HP |
7.5 HP |
10 HP |
12.5 HP |
||
|
(*reduce rating by 1/2 for 1 ph) |
|||||||
|
Endurance |
|||||||
|
Mechanical at no load |
2.5 lakh |
2.5 lakh |
1 million |
1 million |
1 million |
1 million |
1 million |
|
Electrical at rated current |
20,000 |
20,000 |
50,000 |
50,000 |
50,000 |
50,000 |
50,000 |
|
Standard Mountings |
|||||||
|
2- hole |
M3 - 25 CRS |
M3 - 25 CRS |
|||||
|
4- hole (front & base) |
M4 - 36 CRS |
M4 - 36 CRS |
M4 - 36 CRS |
M4 - 36 CRS |
M5 - 49.5 CRS |
M5 - 49.5 CRS |
M5 - 49.5 CRS |
|
*flexible as per requirement |
|||||||
|
Packet thickness (mm) |
9 |
9 |
12 |
12 |
13 |
13 |
13 |
|
Drives |
|||||||
|
Knob |
Yes |
Yes |
Yes |
Yes |
Yes |
Yes |
Yes |
|
Handle |
Yes |
Yes |
Yes |
||||
|
Key-operated |
Yes |
Yes |
Yes |
Yes |
|||
|
Ganged gear |
Yes |
Yes |
Yes |
Yes |
Yes |
Yes |
Yes |
|
Spring return |
Yes |
Yes |
Yes |
Yes |
Yes |
Yes |
Yes |
