Description
The Schneider Electric (Barber Colman) R820-641-REV2 is a Silicon Controlled Rectifier (SCR) power controller engineered for reliable, precise power regulation across a wide range of commercial and industrial HVAC and building automation applications. With a broad input voltage range of 24–347VAC and a robust 45-amp current rating, this unit is well-suited for controlling resistive heating loads, infrared heaters, heat trace systems, and other demanding electrical loads where accurate power modulation is critical.
SCR power controllers offer smooth, stepless control of electrical power to the load — eliminating the mechanical wear and contact bounce associated with traditional relay-based switching. The R820-641-REV2 delivers consistent performance and extended service life in applications where precise temperature or process control is required.
Key Features
- SCR (Silicon Controlled Rectifier) solid-state power control technology
- Wide operating voltage range: 24–347VAC
- 45-amp current rating for high-capacity load control
- Smooth, stepless power modulation — no mechanical switching contacts
- Designed for resistive heating, heat trace, and process heating applications
- Built to Schneider Electric (Barber Colman) quality standards for commercial and industrial use
- Compatible with a broad range of building automation and HVAC control systems
Specifications
- Model / SKU: R820-641-REV2
- Brand: Schneider Electric (Barber Colman)
- Type: SCR Power Controller
- Voltage Range: 24–347VAC
- Current Rating: 45A
Applications
- Commercial and industrial HVAC heating control
- Electric resistance heaters and heat trace systems
- Building automation and energy management systems
- Process heating and temperature regulation
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