{"product_id":"uns0868b-p-v2-3bhe013940r0002-power-supply-module-abb","title":"UNS0868B-P,V2 3BHE013940R0002 Power Supply Module | ABB","description":"\u003cp\u003eThe \u003cstrong\u003eABB 3BHE013940R0002\u003c\/strong\u003e, also cataloged as the \u003cstrong\u003eUNS0868B-P,V2\u003c\/strong\u003e Power Supply Module, operates as a dedicated hardware component for internal bus voltage regulation and board-level power distribution within UNITROL and MEGATROL excitation controller platforms. The module converts incoming distribution voltages into regulated DC voltage rails, supplying low-ripple power directly to processor submodules, rack backplanes, and peripheral gate-drive interfaces.\u003c\/p\u003e\n\u003ch3\u003eHardware Specifications\u003c\/h3\u003e\n\u003cfigure class=\"table\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eParameter\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003e3BHE013940R0002 (UNS0868B-P,V2)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eABB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eSweden\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e1.32 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e37.6 cm x 14.0 cm x 7.5 cm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003e0 to +55 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003e120 W nominal output load capability\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Type\u003c\/td\u003e\n\u003ctd\u003ePower Supply Modules\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSystem Platform\u003c\/td\u003e\n\u003ctd\u003eABB UNITROL \/ MEGATROL\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCustoms Tariff Code\u003c\/td\u003e\n\u003ctd\u003e85044090\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eBackplane Bus Power Integration \u0026amp; Firmware Compatibility\u003c\/h3\u003e\n\u003cp\u003eThe UNS0868B-P,V2 power supply module maintains high backplane bus power stability through active voltage regulation and over-current isolation. It supports internal communication monitoring and voltage sensing circuits that report operational health directly to the master controller rack. Integrated firmware flash compatibility across revision V2 ensures seamless system handshaking, deterministic power-up sequencing, and immunity to transient bus voltage dips during heavy industrial switching operations.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: What is the primary function of the UNS0868B-P,V2 module in an ABB excitation rack?\u003c\/p\u003e\n\u003cp\u003eA: It provides regulated internal DC logic voltages to system backplanes and processing boards, isolating sensitive electronics from supply voltage transients.\u003c\/p\u003e\n\u003cp\u003eQ: Can the UNS0868B-P,V2 power supply module be replaced while the controller is live?\u003c\/p\u003e\n\u003cp\u003eA: No, system input power must be completely isolated and de-energized prior to removing or installing the power supply module to prevent electrical arc flash or hardware damage.\u003c\/p\u003e\n\u003cp\u003eQ: How is thermal dissipation managed within the module chassis?\u003c\/p\u003e\n\u003cp\u003eA: The module relies on integrated aluminum heatsinks designed for natural convection cooling inside standard ABB cabinet assemblies.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eIsolate all AC and DC incoming power sources before opening the cabinet or attempting module insertion.\u003c\/li\u003e\n\u003cli\u003eMaintain a minimum vertical clearance of 100 mm above and below the module cage to allow unobstructed natural convection airflow.\u003c\/li\u003e\n\u003cli\u003eSlide the module evenly into its designated rack slot to avoid misaligning the rear high-current connector pins.\u003c\/li\u003e\n\u003cli\u003eTorque all front panel mounting bolts to specified panel standards to secure structural grounding to the sub-rack frame.\u003c\/li\u003e\n\u003cli\u003eEnsure cabinet earth bonding connections exhibit a resistance of less than 1 ohm to mitigate high-frequency electrical noise.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ABB","offers":[{"title":"Default Title","offer_id":53224680554805,"sku":"UNS0868B-P,V2 3BHE013940R0002","price":66.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0973\/7630\/5461\/files\/UNS0868B-P_V23BHE013940R0002.png?v=1785314031","url":"https:\/\/www.5gplc.com\/products\/uns0868b-p-v2-3bhe013940r0002-power-supply-module-abb","provider":"High Five PLC Solution Limited","version":"1.0","type":"link"}