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SCR Power Controllers
Product Number: R820
SCR Power Controllers
Viconics’ R820 SCR power controller has been designed for safe and reliable control of electric heat loads. By offering a competitive price, the use of SCR’s is no longer an expensive proposition as was the case just a few years ago. As a result, this broad line of products is used by most major North American duct heater manufacturers. Input signal can be provided by DDC panel or Viconics’ own VT7225 thermostat.
- Features
- Model Selection
- Downloads
Features:
- High efficiency, black anodized heat sink improves heat dissipation
- Available from 240 to 600 Volts A.C., 10 to 75 Amps; single or three phase (two leg)
- Zero-cross firing minimizes interference to other loads
- Multi-input control signal (0-10 V d.c.; 4-20 ma d.c.; 0-135 ohm)
- LED to indicate proper operation
- Quick connect, slave terminal to connect to R810 power switches
- UL and CSA approved
| R820 Model Selection Chart: | |||
|
Model No.
|
Maximum Voltage
|
Amperage
|
Phase
|
|
R820-211
|
240
|
10
|
1
|
|
R820-213
|
240
|
10
|
3
|
|
R820-321
|
347
|
25
|
1
|
|
R820-323
|
347
|
25
|
3
|
|
R820-421
|
480
|
25
|
1
|
|
R820-423
|
480
|
25
|
3
|
|
R820-621
|
600
|
25
|
1
|
|
R820-623
|
600
|
25
|
3
|
|
R820-341
|
347
|
45
|
1
|
|
R820-343
|
347
|
45
|
3
|
|
R820-441
|
480
|
45
|
1
|
|
R820-443
|
480
|
45
|
3
|
|
R820-641
|
600
|
45
|
1
|
|
R820-643
|
600
|
45
|
3
|
|
R820-471
|
480
|
75**
|
1
|
|
R820-671
|
600
|
75**
|
1
|
**Note: 75 amp models are only available in single phase configuration.
|
R820 Product Support Documents |
|
|
Document type
|
Download files
|
|
R820 Technical Bulletin
|
 |
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