£72.88

It has never been this cheap. We have no record of a lower price.

£73 today · cheaper than every other day in the last 3 months

MEAN WELL KNX-20E-640 LED Power Supply - 19.2W 640mA 30V

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Price History & Forecast

Grey patches = out of stock. Cheaper = lower on the chart. Hover for exact prices.

Last 38 days · 38 data points (no recent data)

Historical
Generating forecast…
£73.95 £72.77 £73.03 £73.29 £73.54 £73.80 £74.06 19 July 2026 28 July 2026 06 August 2026 15 August 2026 25 August 2026
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Price Distribution

Price distribution over 38 days • 2 price levels

Days at Price
Current Price
33 days · current 5 days 0 8 17 25 33 £73 £74 Days at Price

Price Analysis

Most common price: £73 (33 days, 86.8%)

Price range: £73 - £74

Price levels: 2 different prices over 38 days

Description

The MEAN WELL KNX-20E-640 is a professional-grade KNX switching power supply designed for reliable LED applications. This unit features an integrated choke and a constant current output of 640mA at 30V, providing a stable 19.2W of power. Engineered for efficiency, it operates at 86% efficiency to minimize energy loss during AC/DC conversion. The compact design allows for direct mounting on a DIN rail, making it an ideal choice for streamlined electrical installations. With built-in protection against short circuits, overloads, and overvoltage, this SELV-rated power supply ensures safe and consistent operation for your lighting systems.

Key Features

The MEAN WELL KNX-20E-640 provides a constant current output of 640mA and a 30V output voltage for stable LED performance.

This KNX switching power supply features an integrated choke and can be mounted directly on a standard DIN rail for easy installation.

Built-in safety includes overload protection via current limiting with auto-recovery, plus protection against short circuits and overvoltage.

The compact unit measures 90mm in length, 52.5mm in width, and 54.5mm in height to save space in electrical enclosures.

Equipped with screw terminals for both input and output connections to ensure secure and reliable wiring.

Designed with an 86% efficiency rating and an input voltage range of 180 to 264VAC for optimized power conversion.

Product Specifications

Model
_SML
Domain
Amazon UK
Listed Since
11 March 2021

Barcode

No barcode data available

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