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EIB/KNX power supply 640mA with integrated choke
Source photo:
Mean Well
(fig. might be different or similar)

EIB/KNX power supply 640mA with integrated choke

EAN/GTIN: 4021087034500
Manufacturer: Mean Well
Manufacturer no.: KNX-20E-640
Manufact.-SKU: KNX20E640
Customs tariff no.: 85044090
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48,35 GBP Price incl. VAT (0,00 GBP)
plus shipping
Delivery time:
3-5 days [GB] Central warehouse item (regularly available) - live request to the central warehouse directly in the cart or click the link below the price >Quantity available?<

We always deliver the latest available article version.
Minimum order value (UK): 150 EUR (Sub total)

The installation of electrical devices may only be carried out by an approved electrician and, in the case of high-voltage systems (> = 400V and country-specific nominal power), only with the consent of the respective electricity network operator.



The item has an incredibly competitive price/performance ratio.

The KNX Power Supply KNX-20E-640 is a 640mA power supply with high efficiency and a small footprint of only 3 SU (52.5mm). The device has a KNX bus choke output and an additional output for ancillary power. The -5°C ~ +50°C wide temperature operating range can meet all kinds of applications. LED indicators are used in case of normal operation, overload conditions and RESET operation. It is perfectly suitable to power up any products labeled with the KNX trademark.

• EIB/KNX power supply with integrated choke
• Compact size with 3US (52.5mm) width
• Safety extra low voltage (SELV)
• 180 ~ 264VAC input
• No load power consumption < 0.5W
• 200ms mains failure back-up time
• Cooling by free air convection
• Isolation class ?
• LED indicator for normal operation, bus reset and bus overload
• Installable on DIN rail TS-35/7.5 or 15
• 3 years warranty by manufacturer
• Protections: Short circuit/ Overload (short-circuit-proof)/ Over voltage

The device is equipped with a reset push button, three LEDs and terminal blocks for the AC, KNX bus line and ancillary output.