Description

EVR Series 25A 230VAC Phase Angle Power Regulator

The EVR Series thyristor stacks from United Automation are engineered for reliable single-phase 230V power control of loads up to 25A. Designed with an integral earthed heatsink and high-speed semiconductor fuses, these regulators deliver smooth, proportional control using phase angle (A407222A) or burst firing (A407222B) modes to suit heating and ventilation applications.

Customisable signal options, soft-start capability, and straightforward installation make the EVR range a dependable solution for industrial environments requiring accurate and efficient power regulation.

Key Features

• Single entry cable gland for simple, tidy installation
• Massive 0.3°C/Watt earthed heatsink for efficient heat dissipation
• Available in phase angle or burst firing versions
• Integrated high-speed semiconductor fuses for enhanced protection
• Optional input control methods for flexible integration
• Soft-start function to protect loads and extend component life
• Designed for easy installation and long operational life

Technical Specifications

• Mains voltage: 230V AC +10% / −6%
• Current rating: 25A
• Control signal span (minimum): 0–5V DC
• Control signal span (maximum): 0–25V DC
• Signal zero offset: 0–30% of span
• Signal input resistance: 5000Ω ±20%
• Manual potentiometer options: 2kΩ, 5kΩ, or 10kΩ
• Soft-start time constant: 0–20 seconds adjustable
• Isolation voltage: 2500 Vrms
• Auxiliary output: 5V DC
• Triac limiting RMS current: 26A
• Peak single-cycle surge current: 250A
• Maximum peak voltage: 600V

Fuse

• 30A, 660V SCR-type high-speed semiconductor fuse

Temperatures

• Maximum working temperature: 65°C
• Storage temperature: −20°C to +85°C

Applications

Ideal for proportional control in:

• Industrial heaters and process heaters
• Ovens and dryers
• Air curtains and hot plates
• Heating and ventilation systems
• Furnaces and electroplating processes
• Controlled rectifiers and transformer regulation

SCR solid-state phase angle control ensures smooth, accurate power delivery across a wide range of industrial heating and ventilation processes.

Optimise your industrial processes with the reliable and efficient control offered by the EVR range of Thyristor stacks. Perfect for a range of heating and ventilation applications, these stacks ensure smooth proportional control, enhancing your system’s performance and longevity.