Harvard CLK20-1050P-240-C LED Driver – Limited Stock

CLK20-1050P-240-C  Electrical Data

Part number CLK20-1050P-240-C
Mains input voltage 220 to 240V ac RMS Nominal
Mains frequency 50 – 60Hz
Mains surge protection 4kV common-mode 2kV differential
Input-output isolation 3.75kV ac rms

Mains inrush current 45A peak decaying over 20us
Humidity 95% max non-condensing
Thermal trip 110° – internal self-resetting 
Ambient temperature range -25°C to 50°C
Maximum Tc temperature 80°C
LED ripple current (at full load) <10% peak to peak (<5% RMS)
Terminal blocks Rising clamp 5mm Pitch
Enclosure White polycarbonate UL94-V0 rated
Wire size 0.5mm to 1.5mm2

Other Harvard drivers also stocked 

CL500-UNI-C
CL50-1200ADF-240-C
CL50-700AD-240-B
CLS80-350S2D-240-B-NI
CLS90-700S2D-240-B-NI

Compact non-dimmable constant current LED drivers provide a fixed, stable current (e.g.350mA – 700mA) to high-power LEDs and series-wired fixtures, ensuring consistent brightness and preventing premature failure. Designed for tight spaces (small footprints or low-profile), they are ideal for downlights, spotlights, and cabinet lighting, offering high reliability and efficient, flicker-free, non-dimming performance.

Key Features and Benefits

Constant Current (CC) Output: Essential for high-power LEDs to prevent overheating, which occurs when a constant voltage source causes excessive current flow as the LED heats up.

Compact/Low-Profile Design: Engineered to fit within restricted, small spaces such as cabinets or behind ceiling fixtures.

Non-Dimmable: Offers superior reliability and simplicity, delivering a set current without responding to external dimming signals (TRIAC, 0-10V).

Series Wiring: Must be wired in series, where the output voltage adjusts to maintain the steady amperage across all connected LEDs.

Application: Ideal for LED downlights, spots, and high-power LED engines.

Technical Specifications

Typical Outputs: Common fixed currents include 350mA, 500mA 700mA & 1050mA.

Voltage Range: The voltage adjusts based on the load in a series circuit.

Form Factor: Often available in “slim” or “compact” plastic or metal casings, sometimes IP20 rated for dry indoor, or higher for moisture resistance.

Common Uses

• LED Downlights and spotlights.
• Small-scale commercial lighting.
• Cabinet and furniture lighting.
• Architectural accent lighting where brightness does not need adjustment.

Selection Tips

Match Output Current (mA): The driver’s current must precisely match the LED module’s requirements (e.g. 350mA or 700mA).

Match Wattage: Ensure the driver’s wattage range covers the total load of your LED string.

Check Dimensions: Verify that the “compact” size fits your specific fixture or void space.

Confirm Wiring: Ensure LEDs are wired in series.

Harvard Technology was a UK-based company specializing in smart lighting solutions, including LED drivers, light engines, and wireless control systems like the LeafNut and EyeNut systems. The company’s original business faced administration, but its assets were acquired and its products, particularly LED drivers and sources, are now sold under the new entity, Harvard Power Systems, which is part of the Gallant Lighting Group. The original company was known for pioneering early wireless smart lighting technology for both indoor and outdoor applications.

Key details regarding Harvard Technology and its successors:

Core Products: Specialized in LED drivers (CoolLED range), LED light engines (LEDeng), and wireless lighting controls for interior and exterior use.

Innovations: Early leader in wireless street lighting control (LeafNut) and indoor IoT monitoring systems (EyeNut).

Manufacturing: Maintained strong R&D and manufacturing roots in the UK, particularly in Leeds.

Corporate Changes: Following financial challenges and administration in late 2018, parts of the business were acquired.

Successor/Related Entity: Harvard Power Systems UK, part of the Gallant Lighting Group, emerged to focus on high-spec LED drivers and lighting components, utilizing UK engineering.