{"product_id":"dssr120-abb-advant-ocs-power-supply-units","title":"DSSR120 ABB Advant OCS Power Supply Units","description":"\u003ch2\u003eABB DSSR120 Power Supply Unit\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eABB DSSR120\u003c\/strong\u003e, also cataloged as the \u003cstrong\u003eDSSR120\u003c\/strong\u003e DC Power Supply Unit, operates as a dedicated hardware component for direct internal voltage regulation within ABB Advant OCS and MasterPiece 200\/200\/1 rack architectures.\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\u003eDSSR120 (48990001-LH)\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\u003e2059 g (4.54 lbs)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003eStandard rack-mounting envelope\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\u003ePower output capacity up to 100 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Voltage\u003c\/td\u003e\n\u003ctd\u003e24 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Voltage\u003c\/td\u003e\n\u003ctd\u003e5 VDC (regulated)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Current Capacity\u003c\/td\u003e\n\u003ctd\u003e20 A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFuse Protection\u003c\/td\u003e\n\u003ctd\u003eIntegrated (10 A spare fuse part number 5672 827-10)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTarget System Compatibility\u003c\/td\u003e\n\u003ctd\u003eABB Advant OCS, MasterPiece 200 \/ 200 \/ 1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eBackplane Bus Powering \u0026amp; Deterministic I\/O Density Scaling\u003c\/h3\u003e\n\u003cp\u003eThe DSSR120 converts standard 24 VDC plant power into a tightly regulated 5 VDC output rail, supplying steady current up to 20 A directly across the rack backplane bus. High backplane bus communication velocity relies on stable supply voltages to prevent logic-level drops during heavy I\/O density scaling. Thermal heat dissipation channels integrated into the chassis preserve internal component ratings, while firmware flash compatibility across backplane processing nodes remains uncompromised by input side voltage fluctuations.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: How does the DSSR120 protect internal backplane electronics against overcurrent conditions on the primary supply?\u003c\/p\u003e\n\u003cp\u003eA: The module incorporates input line protection utilizing a 10 A fuse (spare part number 5672 827-10) that opens the supply circuit upon detecting sustained overcurrent conditions before backplane voltage degradation occurs.\u003c\/p\u003e\n\u003cp\u003eQ: Can two DSSR120 modules operate simultaneously to support redundant power configurations?\u003c\/p\u003e\n\u003cp\u003eA: Yes. The 5 VDC output stage is engineered to function within redundant power supply schemes on compatible MasterPiece and Advant OCS racks, enabling dual-module parallel feeding for fault-tolerant operation.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cp\u003eMount the DSSR120 directly into its dedicated rack slot within the Advant OCS or MasterPiece enclosure, securing the front retention screws to establish proper mechanical grounding to the rack frame. Connect the incoming 24 VDC field power leads to the designated terminal block, ensuring tight screw clamping to minimize contact resistance. Verify clear vertical space above and below the rack assembly to allow unobstructed thermal convection across the module's cooling vents.\u003c\/p\u003e","brand":"ABB","offers":[{"title":"Default Title","offer_id":43838486970467,"sku":"DSSR120","price":676.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0583\/5246\/8067\/files\/372_d4b728bd-7542-4c93-9d30-88b3e2dd7012.jpg?v=1763106945","url":"https:\/\/www.autocontrolglobal.com\/products\/dssr120-abb-advant-ocs-power-supply-units","provider":"AutoControl Global","version":"1.0","type":"link"}