{"product_id":"dssr122-48990001-nk-abb-rack-power-supply-advant-master-s100-series","title":"DSSR122 48990001-NK ABB Rack Power Supply Advant Master S100 Series","description":"\u003cp\u003eConfigured for DC-input to DC-output conversion in the ABB Advant Master S100 rack, the \u003cstrong\u003eABB DSSR122 48990001-NK\u003c\/strong\u003e (\u003cstrong\u003eDSSR122\u003c\/strong\u003e Rack Power Supply) provides direct 5 VDC 40 A regulated bus power to backplane-mounted controller and I\/O cards.\u003c\/p\u003e\n\u003ch3\u003eCatalog String and Part Number Mapping\u003c\/h3\u003e\n\u003cp\u003eDSSR122 is the base module type. 48990001-NK is the ABB spare\/product ID (alternate exchange ID EXC48990001-NK). The \"-NK\" suffix is a shipment batch code, not a hardware revision; DSSR122 48990001-NK and DSSR122 48990001-NK (EXC) share the same electrical and mechanical envelope. Do not confuse with DSSR132 (24 VDC output variant) or DSQC AC-DC robot supplies.\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\u003eParameter\u003c\/th\u003e\n\u003cth\u003eSpecification\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\u003eDSSR122 48990001-NK\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 (per ABB tariff declaration)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e2.34 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShipping Dimensions\u003c\/td\u003e\n\u003ctd\u003e265 mm x 138 mm x 90 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003e-25 deg C to +70 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStorage Temp\u003c\/td\u003e\n\u003ctd\u003e-40 deg C to +85 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Voltage\u003c\/td\u003e\n\u003ctd\u003e18-30 VDC (nominal 24 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\u003c\/td\u003e\n\u003ctd\u003e40 A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRated Power\u003c\/td\u003e\n\u003ctd\u003e200 W (5 V x 40 A)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEfficiency\u003c\/td\u003e\n\u003ctd\u003e\u0026gt;=85 % typical\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput-Output Isolation\u003c\/td\u003e\n\u003ctd\u003e1500 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProtection\u003c\/td\u003e\n\u003ctd\u003eOvervoltage, overcurrent, short-circuit, thermal; internal 20 A fuse 5672827-20\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCooling\u003c\/td\u003e\n\u003ctd\u003eNatural convection, no fan\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMounting\u003c\/td\u003e\n\u003ctd\u003eS100 rack slot \/ DIN rail \/ panel bolt\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStatus Indication\u003c\/td\u003e\n\u003ctd\u003ePower OK \/ Fault LED\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompliance\u003c\/td\u003e\n\u003ctd\u003eCE, UL, CSA, RoHS exempt 2011\/65\/EU Art 2(4)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTariff Code\u003c\/td\u003e\n\u003ctd\u003e8504409520 \/ 8537101190\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eBackplane Bus Power and S100 Rack Integration\u003c\/h3\u003e\n\u003cp\u003eThe module seats in the dedicated power slot of DSRF182-class S100 I\/O racks and feeds the 5 VDC logic rail for Advant OCS AC410\/AC450, MasterPiece 100\/200 and S100 digital\/analog cards. It does not source 24 VDC field power; that rail is supplied separately by the station DC distribution. N+1 parallel redundancy is supported by installing multiple DSSR122 units in separate rack power slots under diode OR-ing; no external tie module is required. Backplane inrush at 24 VDC input is bounded by the internal 20 A fuse; replacement fuse class is slow-blow 20 A 5672827-20 only. MB300 bus communication velocity is unaffected because the supply drives static logic rails, not the serial transceiver termination directly.\u003c\/p\u003e\n\u003ch3\u003eOrdering Info\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e1 x DSSR122 power supply body 48990001-NK\u003c\/li\u003e\n\u003cli\u003e1 x internal 20 A spare fuse 5672827-20 pre-installed\u003c\/li\u003e\n\u003cli\u003e2 x rack ejection levers \/ DIN clip adapters\u003c\/li\u003e\n\u003cli\u003e1 x printed warning label sheet (RoHS exemption note)\u003c\/li\u003e\n\u003cli\u003eNo front connector, no backplane ribbon, no 24 VDC input cabling included\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eRack Fitting and DC Bus Wiring\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eVerify incoming DC bus is 18-30 VDC before insertion; 48 VDC INFI-90 variant is a different batch, do not mix.\u003c\/li\u003e\n\u003cli\u003eTighten 24 VDC input lug to 1.2 Nm; use 6 mm2 minimum copper for 40 A output bus bar tie.\u003c\/li\u003e\n\u003cli\u003eMount in S100 slot with both ejector levers fully seated; partial insertion trips Power OK LED off.\u003c\/li\u003e\n\u003cli\u003eSeparate 24 VDC input runs from 5 VDC output bus by 50 mm minimum to suppress switching noise coupling.\u003c\/li\u003e\n\u003cli\u003eNever bridge 5 VDC output to 24 VDC field rail; DSSR122 has no 24 VDC output stage.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eWhat input voltage range does DSSR122 48990001-NK accept?\u003c\/p\u003e\n\u003cp\u003e18-30 VDC with 24 VDC nominal. Below 18 VDC the output drops out of regulation; above 30 VDC the input overvoltage clamp latches and requires power cycle. 48 VDC batches exist under INFI-90 label only, not under 48990001-NK.\u003c\/p\u003e\n\u003cp\u003eCan DSSR122 be hot-swapped in a live S100 rack?\u003c\/p\u003e\n\u003cp\u003eYes, the S100 power slot supports hot extraction\/insertion. Before pull, confirm N+1 redundancy active so 5 VDC rail stays within +\/-2 %; single-unit swap on a non-redundant rack forces controller reboot.\u003c\/p\u003e\n\u003cp\u003eWhat fuse replaces the internal 20 A device?\u003c\/p\u003e\n\u003cp\u003eABB spare 5672827-20, slow-blow 20 A, ceramic body. Do not substitute with fast-acting automotive blade fuses; inrush at insertion will false-blow and disable the module.\u003c\/p\u003e\n\u003cp\u003eDoes DSSR122 supply 24 VDC to field instruments?\u003c\/p\u003e\n\u003cp\u003eNo. Output is single-rail 5 VDC 40 A for rack logic only. S100 24 VDC field power comes from external DC distribution, often a separate DSSR132 or station PSU. Mixing rails on same bus bar causes backfeed damage.\u003c\/p\u003e\n\u003cp\u003eIs 48990001-NK firmware or config flashable?\u003c\/p\u003e\n\u003cp\u003eNo. DSSR122 is an analog switching regulator with no microprocessor, no firmware, no configuration EEPROM. Status is hardware-derived from sense amps and comparator logic only.\u003c\/p\u003e\n\u003cp\u003eWhat indicates output overload on the front face?\u003c\/p\u003e\n\u003cp\u003ePower OK green extinguishes and Fault LED amber lights when output current exceeds 40 A or when overtemperature threshold (~70 deg C heatsink) is reached. Auto-recovery occurs 2 s after fault clears.\u003c\/p\u003e\n\u003cp\u003eCan two DSSR122 units share one 5 VDC backplane without diode OR-ing?\u003c\/p\u003e\n\u003cp\u003eNot recommended. Direct parallel tie without OR-ing diodes causes current imbalance and single-unit dominance. S100 redundant slots already provide OR-ing; external tie frames need 40 A Schottky diodes per unit.\u003c\/p\u003e\n\u003cp\u003eWhat is the MTBF and cooling requirement?\u003c\/p\u003e\n\u003cp\u003eTypical MTBF ~300,000 h at 40 deg C ambient with natural convection. Forced fan cooling is not required but cabinet airflow must exceed 0.5 m\/s past heatsink fins; sealed enclosures without ventilation trip thermal shutdown.\u003c\/p\u003e","brand":"ABB","offers":[{"title":"Default Title","offer_id":46021160763565,"sku":"DSSR122 48990001-NK","price":88.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0733\/1613\/9181\/files\/DSSR12248990001-NK3.jpg?v=1784538093","url":"https:\/\/www.maxwellplc.com\/ru\/products\/dssr122-48990001-nk-abb-rack-power-supply-advant-master-s100-series","provider":"Maxwell PLC Ltd","version":"1.0","type":"link"}