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KNX-20E-640 Installation Manual Introduction The KNX Power Supply KNX-20E-640 is a 640mA power supply with high efficiency and a small footprint of only 3SU (52.5mm). The device has a KNX bus choke output and an additional output for ancillary power. The -5℃...
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Installation 1. Wiring Use wires with an adequate cross-section • Use suitable mounting tools to do the wiring and mounting • The maximum number of bus devices connected is 64 • The maximum length of a line segment is 350 m, measured along the line between the power supply and the furthest bus device •...
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(miniature circuit breaker) with an adequate current rating to protect the KNK device. Model KNX-20E-640 Note: These calculated values are based on MCB S201 series manufactured by ABB. Function and Operation The device does not require any configuration with ETS® (Engineering Tool Software) tool. Once the wiring is proper done, the “Power on”...
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