Description
Schneider Electric (Barber Colman) R820-621-REV2 SCR Power Center
The Schneider Electric (Barber Colman) R820-621-REV2 is a Silicon Controlled Rectifier (SCR) Power Center engineered for reliable, precise power regulation in commercial and industrial HVAC applications. Rated at 347 volts and 25 amps, this Revision 2 unit delivers consistent load control performance for electric heating and other demanding building automation applications.
SCR power controllers offer smooth, stepless power modulation — eliminating the mechanical wear associated with traditional switching contactors and extending the service life of connected heating elements and loads. The R820-621-REV2 is a direct Barber Colman legacy product now supported under the Schneider Electric brand, ensuring backward compatibility with existing control systems.
Key Features
- SCR (Silicon Controlled Rectifier) solid-state power control technology
- Rated voltage: 347V
- Rated current: 25A
- Revision 2 (REV2) design for updated performance and reliability
- Designed for commercial and industrial HVAC power control applications
- Solid-state operation — no mechanical contacts for reduced maintenance
- Barber Colman legacy product, now under Schneider Electric
- Compatible with building automation and energy management systems
Applications
- Electric duct heater power control
- Commercial HVAC heating element regulation
- Building automation system integration
- Industrial process heating control
Product Details
- Brand: Schneider Electric (Barber Colman)
- Model / SKU: R820-621-REV2
- Voltage Rating: 347V
- Amperage Rating: 25A
- Revision: R2
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