QLC-RFI 17A 4 Position Switched Quartz Lamp Regulator for Commercial Heating

The QLC-RFI 17A Switched Regulator is a compact single-phase variable phase-angle controller designed for precise power regulation of quartz lamps, heat lamps and other mains-driven loads. Designed for commercial catering and heating applications, it provides controlled output adjustment while offering a convenient 4-position control configuration for straightforward operation.

The RFI version is particularly suited to commercial gantries, restaurants, hospitality equipment and kitchen heating applications, where reliable and stable control of quartz and infrared lamps is required. Its robust TRIAC design provides dependable switching and high inrush-current handling, while the compact housing and single-hole fixing simplify installation.

⚠️  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
• 4-position regulator configuration specifically suited to QLC applications
• Integrated ON/OFF switch for convenient operation
• RFI configuration for applications requiring reduced radio-frequency interference
• Large TRIAC for reliable switching and high inrush-current handling
• Compact and robust construction
• Easy installation
• Ideal for quartz, infrared and heat-lamp applications
• Suitable for commercial kitchens, catering equipment and industrial heating
• Designed for resistive and selected inductive loads

Technical Specifications

• Controller Type: Single-phase variable phase-angle regulator
• Configuration: QLC 4-position switched regulator
• Maximum RMS On-State Current: 17A RFI
• 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 Unit Load @ 20°C Ambient: 10A without additional heatsink
• Maximum Recommended Unit 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: 5mm for QLC
• Shaft Projection from Bush: 30mm for QLC
• Fixing Hole Diameter: 10mm

Operation

The QLC-RFI controls the power delivered to the connected load using phase-angle regulation. The controller varies the AC waveform supplied to the load, allowing the output to be adjusted from 0–98%.

The 4-position QLC configuration provides a practical control solution for applications such as commercial heated gantries and quartz lamp systems, where repeatable power settings are useful for maintaining consistent heating or illumination.

The RFI configuration is designed for applications where control of radio-frequency interference is important, while the large TRIAC provides reliable operation when controlling loads with higher inrush currents.

Applications

• Commercial heated gantries
• Quartz lamp systems
• Infrared heat lamps
• Food warming equipment
• Commercial kitchen equipment
• Ovens
• Fish and chip shops
• Restaurants
• Hospitality equipment
• Moulders
• Industrial dryers
• Heating elements
• Transformers
• Selected motors and inductive loads

Benefits

• Simple multi-position control: The QLC configuration provides convenient preset power settings.
• Precise power regulation: Variable phase-angle control allows output adjustment up to 98%.
• Ideal for quartz lamps: Well suited to heat and infrared lamp applications in catering environments.
• Reliable inrush handling: Large TRIAC technology helps manage demanding loads.
• Compact installation: Single-hole fixing makes panel installation straightforward.
• RFI option: Helps meet the requirements of applications where electrical interference needs to be reduced.
• Robust construction: Designed for reliable use in commercial and industrial environments.

Safety & Installation

• Ensure the regulator is correctly rated for the connected load and mains voltage.
• Adequate thermal management is essential when operating at higher currents.
• Do not exceed the stated maximum recommended load without appropriate additional heatsinking.
• Ensure adequate ventilation around the regulator.
• Use correctly rated wiring, terminals and protection devices.
• Isolate the mains supply before installation, adjustment or servicing.
• For applications with significant inrush current, select the appropriate high-surge version.
• Installation should be carried out by a suitably qualified person in accordance with applicable electrical requirements.

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