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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
  • Documentation
  • Downloads
  • Components

Features:

  • High efficiency, anodized heat sink improves heat dissipation
  • Available from 48 to 600 Volts A.C., 25 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.)
  • 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
R820-621
600
25
1
R820-623
600
25
3
R820-641
600
45
1
R820-643
600
45
3
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
PDF download