JB 125C33 KNX UL Junction Box Power Supply 160mA DC 29V AC110-277V Choke IP20 5WG1125-4CB33

The JB 125C33 KNX power supply is a 160 mA DC 29 V unit specifically engineered for North American junction box installations where DIN rail space is not available. It includes an integrated choke to limit current and protect the KNX bus, and the choke-protected output voltage is connected via a standard bus terminal. The exceptionally wide rated operational voltage of AC 110 to 277 V at 50/60 Hz allows the unit to operate from commercial and industrial mains supplies across North America without voltage selection. The device is built into a UL/NEMA junction box using a 1/2 inch threaded connector, with function wires fed through the connector for neat and code-compliant installation. This design makes it ideal for retrofit projects or installations where the equipment must fit into existing electrical enclosures.