QVR/S-RFI 17A Switched Phase Angle Regulator with RFI Suppression

The QVR/S-RFI 17A Switched Regulator is a compact, robust single-phase variable phase-angle controller designed for precise power and voltage regulation of mains-driven electrical loads. With adjustable output from 0–98%, this 230V switched regulator provides smooth control for quartz lamps, heat lamps, ovens, catering equipment and other heating applications.

The RFI version is designed to help minimise radio-frequency interference, making it particularly suitable for commercial kitchens, hospitality equipment and heat-lamp applications where stable, controlled power is essential. The integrated ON/OFF switch provides convenient operation, while the robust TRIAC design offers reliable handling of high inrush currents.

⚠️  NOTE: This regulator is a high-current solid-state device. Efficient heat transfer is mandatory for reliable operation. For proper installation, a thermal grease/paste MUST be applied evenly to the back of the regulator before mounting to ensure maximum thermal coupling. (Warranty void if Heatsink paste is not used)   https://united-automation.com/product/tm500-thermal-grease-syringe/

Key Features

• 0–98% adjustable output for precise power and voltage control
• 17A maximum RMS on-state current for the RFI version
• Integrated ON/OFF switch for convenient operation
• Radio Frequency Interference (RFI) version for reduced electrical interference
• Large TRIAC for reliable switching and high inrush-current handling
• Compact and robust construction for commercial and industrial applications
• Single-hole fixing for straightforward installation
• Suitable for resistive and selected inductive loads
• Ideal for quartz and infrared heat lamps requiring variable power control

Technical Specifications

• Controller Type: Single-phase variable phase-angle regulator
• Configuration: Switched regulator with ON/OFF control
• Maximum RMS On-State Current: 17A
• Minimum Operating Current: 200mA
• TRIAC Limiting RMS On-State Current: 26A standard
• Peak One-Cycle Surge @ 20ms: 250A standard
• I²t for Fusing: 112A²s
• Output Adjustment: 0–98%
• Isolation Voltage: 2500V RMS
• Maximum Recommended Unit Temperature: 65°C standard
• Maximum Cable Temperature: 105°C
• Maximum Recommended Load @ 20°C Ambient: 10A without additional heatsink
• Maximum Recommended Load @ 40°C Ambient: 5A without additional heatsink
• Mains Supply: 230V AC ±10%
• Mains Frequency: 50/60Hz
• Unit Storage Temperature: 0°C to +85°C

Dimensions

• Shaft Diameter: 6.3mm
• Bush Length: 7mm for QVR/QVR/S
• Shaft Projection: 8mm for QVR/S
• Fixing Hole Diameter: 10mm

Operation

The QVR/S-RFI uses phase-angle control to regulate the amount of AC power delivered to the connected load. Rotating the control adjusts the output across a 0–98% range, allowing the user to set the required heating or lamp intensity.

The integrated switch provides convenient ON/OFF operation, making the QVR/S-RFI particularly useful where both power adjustment and direct switching are required in one compact control.

The regulator is suitable for mains-driven resistive loads and selected inductive loads, including applications where high inrush currents may occur.

Applications

• Commercial and industrial ovens
• Fish and chip shops
• Restaurants
• Hospitality and catering equipment
• Quartz lamps
• Infrared and heat lamps
• Heated gantries
• Food warming equipment
• Moulders
• Industrial dryers
• Heating elements
• Transformers
• Selected motors and other inductive loads

Benefits

• Precise power control: Easily adjust the output from 0–98%.
• Convenient operation: Integrated switching combines ON/OFF control with variable regulation.
• Reduced interference: The RFI configuration is suited to applications where radio-frequency interference needs to be controlled.
• Compact installation: Single-hole fixing simplifies panel mounting.
• Versatile application: Suitable for commercial kitchens, catering equipment, heat lamps and selected industrial loads.
• Robust performance: Large TRIAC technology provides dependable switching and power regulation.

Safety & Installation

• Correct heatsinking is essential when operating the regulator at higher currents.
• Do not exceed the specified maximum recommended load for the ambient temperature without appropriate additional heatsinking.
• Ensure the regulator is mounted securely and that adequate ventilation is provided.
• Follow appropriate electrical installation procedures and isolate the mains supply before installation or servicing.
• Select the correct voltage and current rating for the connected load.
• For high-inrush applications, use the appropriate HS version.
• Ensure all connections, terminals and wiring are correctly rated for the operating current and temperature.

214-3963, 1338084, 214-3957, 1213093