{"product_id":"delta-esr-48-30d-a-rectifier-module-48v-30a","title":"Delta ESR-48\/30D A Rectifier Module 48V 30A 54.3V Hot Swap (NEW In Box)","description":"\u003cp\u003eThe Delta ESR-48\/30D A is a plug in switch mode rectifier module for 48 volt telecom DC power systems. It slides into the front of a Delta rectifier shelf, converts mains AC to a regulated negative 48 volt DC output, and shares current with the other modules in the shelf so the plant can run N plus 1 redundant. Modules are hot swappable, so a faulty unit can be pulled and replaced without dropping the DC bus.\u003c\/p\u003e\u003cp\u003eThe carton on this unit reads Customer GFS, Customer model name ESR-48\/30D A, Delta model name ESR-48\/30D A, Default 54.3V, date code 0842, quantity 1, Made in China, RoHS5. The 54.3 volt figure is the factory default float voltage, which is the normal setting for a 48 volt lead acid string. Output is rated 30 amps, placing the module in the 1.6 to 1.8 kilowatt class. Cooling is by internal fan with speed control, and the input stage uses active power factor correction.\u003c\/p\u003e\u003ch2\u003eSpecifications\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003eBrand:\u003c\/strong\u003e Delta Electronics\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eModel:\u003c\/strong\u003e ESR-48\/30D A\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003ePart Number:\u003c\/strong\u003e ESR-48\/30D A\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eAlternate Part Number:\u003c\/strong\u003e ESR-4830D\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Plug in switch mode telecom rectifier module\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eNominal System Voltage:\u003c\/strong\u003e -48 V DC\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eOutput Current:\u003c\/strong\u003e 30 A\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDefault Float Voltage:\u003c\/strong\u003e 54.3 V DC, as printed on the carton\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eOutput Voltage Range:\u003c\/strong\u003e 38 to 60 V DC on this platform\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eOutput Power Class:\u003c\/strong\u003e Approximately 1.6 to 1.8 kW\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eAC Input:\u003c\/strong\u003e 90 to 275 V AC operational on the platform, 45 to 65 Hz\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003ePower Factor:\u003c\/strong\u003e Greater than 0.99 at 220 V AC full load, active PFC\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eTotal Harmonic Distortion:\u003c\/strong\u003e Less than 5 percent\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eEfficiency:\u003c\/strong\u003e Greater than 90 percent at 220 V AC full load\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCurrent Share:\u003c\/strong\u003e Less than 5 percent between modules\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHot Swap:\u003c\/strong\u003e Yes, front access\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCooling:\u003c\/strong\u003e Internal fan with speed control\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eProtection:\u003c\/strong\u003e Over voltage, over current and over temperature\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eModule Envelope:\u003c\/strong\u003e 132 mm H x 263 mm D x 83.6 mm W\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eApproximate Module Weight:\u003c\/strong\u003e 2.0 kg\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCompliance:\u003c\/strong\u003e RoHS5\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eSerial Number:\u003c\/strong\u003e MA0842016667W0\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDate Code:\u003c\/strong\u003e 0842\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCountry of Origin:\u003c\/strong\u003e China\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCondition:\u003c\/strong\u003e New, in the original carton\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e30 A output at a 54.3 V default float, ready to drop into a 48 V plant\u003c\/li\u003e\n\u003cli\u003eHot swappable from the front, no need to drop the DC bus\u003c\/li\u003e\n\u003cli\u003eActive power factor correction above 0.99 with THD under 5 percent\u003c\/li\u003e\n\u003cli\u003eCurrent sharing within 5 percent for N plus 1 redundant operation\u003c\/li\u003e\n\u003cli\u003eWide 90 to 275 V AC input tolerance on the platform\u003c\/li\u003e\n\u003cli\u003eNew unused factory stock, not ex service\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eTypical Applications\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e48 V DC power plants at telecom, radio and network sites\u003c\/li\u003e\n\u003cli\u003eAdding capacity or redundancy to an existing Delta ES48 rectifier shelf\u003c\/li\u003e\n\u003cli\u003eReplacing a failed rectifier module in service\u003c\/li\u003e\n\u003cli\u003eSpares holding for sites running the Delta ESR platform\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003ePackage Includes\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e1 x Delta ESR-48\/30D A rectifier module\u003c\/li\u003e\n\u003cli\u003eNo rectifier shelf, controller, cabling or batteries are included\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eAdditional Information\u003c\/h2\u003e\u003cp\u003eThis is a plug in module and does not operate standalone. It requires a compatible Delta rectifier shelf from the ES48 family, together with the shelf controller. Please confirm your shelf accepts the ESR-48\/30D form factor before ordering.\u003c\/p\u003e\u003cp\u003eDelta does not publish a standalone datasheet for the ESR-48\/30D A, so the electrical figures above are taken from Delta's own platform documentation for the shelf family this module belongs to. Some resellers headline this module as 1800 W. Thirty amps at 54.3 volts is 1629 watts, and Delta's published figure for the sibling ESR-48\/30B is 1500 W, so we have quoted the class as approximately 1.6 to 1.8 kW rather than repeat an unverified number.\u003c\/p\u003e\u003cp\u003eDo not confuse this with the ESR-48\/40D D, a 40 amp CellD series module. A widely circulated PDF titled Delta ESR-48-30D D is in fact the datasheet for that different product.\u003c\/p\u003e\u003cp\u003eThis is legacy 2008 build stock. The ESR series is discontinued by Delta, whose current 48 V rectifier lines are the DPR EnergE series and the Eltek Flatpack families.\u003c\/p\u003e\u003cp\u003eInstallation must be carried out by a suitably qualified technician.\u003c\/p\u003e\u003cp\u003eThe item is new in the manufacturer's original packaging.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eShipping from Sydney, Australia.\u003c\/strong\u003e\u003c\/p\u003e","brand":"Delta","offers":[{"title":"Default Title","offer_id":52928350093629,"sku":"S4204","price":417.26,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0953\/8931\/9485\/files\/20260820_173322.jpg?v=1787731974","url":"https:\/\/indrelec.com.au\/products\/delta-esr-48-30d-a-rectifier-module-48v-30a","provider":"Indrelec","version":"1.0","type":"link"}