{"product_id":"newmar-lvd-48-30-low-voltage-disconnect-48v-30a","title":"Newmar LVD 48-30 Low Voltage Disconnect 48V DC 30A Positive Ground (NEW In Box)","description":"\u003cp\u003eThe Newmar LVD 48-30 is a 48 volt, 30 amp low voltage disconnect from Newmar Powering the Network in California. It protects a 48 volt battery bank from over discharge damage, which is the usual requirement at telecom and network sites running battery backed DC plant. The unit wires in series in the load leg between the battery and the load, with a separate sense wire to the battery terminal so it measures true terminal voltage rather than voltage depressed by load current.\u003c\/p\u003e\u003cp\u003eWhen the bank falls to the disconnect setpoint the internal contactor opens and sheds the load, stopping the discharge before the cells are permanently damaged. It stays open, drawing only its small standby current, until a charge source lifts the bank to the higher reconnect setpoint, then closes automatically. The hysteresis between the two setpoints prevents the contactor cycling as the bank sags and recovers. Both setpoints are adjustable through the cover.\u003c\/p\u003e\u003ch2\u003eSpecifications\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003eBrand:\u003c\/strong\u003e Newmar Powering the Network\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eModel:\u003c\/strong\u003e LVD 48-30\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003ePart Number:\u003c\/strong\u003e LVD 48-30\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eAlternate Part Number:\u003c\/strong\u003e 490-3270-2 REV -1\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eProduct Type:\u003c\/strong\u003e DC low voltage disconnect, battery over discharge protection\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eNominal System Voltage:\u003c\/strong\u003e 48 V DC, positive ground\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eMaximum Continuous Current:\u003c\/strong\u003e 30 A\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eFactory Disconnect Setpoint:\u003c\/strong\u003e 42.0 V DC\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eFactory Reconnect Setpoint:\u003c\/strong\u003e 49.0 V DC\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDisconnect Adjustment Range:\u003c\/strong\u003e 42 to 60 V DC\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eReconnect Adjustment Range:\u003c\/strong\u003e 38 to 60 V DC\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQuiescent Draw, Load Connected:\u003c\/strong\u003e 0.10 A\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQuiescent Draw, Load Disconnected:\u003c\/strong\u003e 50 mA maximum\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eTerminals:\u003c\/strong\u003e Studs with supplied ring lugs, 2 x quarter inch for input and output, 1 x number 10 for sense\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eSense Circuit Protection:\u003c\/strong\u003e 1 A fast blow fuse\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIndicator LEDs:\u003c\/strong\u003e None\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eAlarm Contacts:\u003c\/strong\u003e None\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eMounting:\u003c\/strong\u003e Wall, bulkhead or mobile via case flanges, horizontal or vertical\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eEnclosure:\u003c\/strong\u003e Vinyl clad aluminium, electrically isolated case\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eOperating Temperature:\u003c\/strong\u003e 0 to +50 degrees C\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDimensions:\u003c\/strong\u003e Approximately 133 x 133 x 89 mm (5.25 x 5.25 x 3.5 in)\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eUnit Weight:\u003c\/strong\u003e Approximately 0.45 kg\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eSerial Number:\u003c\/strong\u003e 16460013\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCountry of Origin:\u003c\/strong\u003e United States of America\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCondition:\u003c\/strong\u003e New, in the original box\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eProtects a 48 V battery bank from deep discharge damage\u003c\/li\u003e\n\u003cli\u003ePositive ground design, matching standard telecom DC plant practice\u003c\/li\u003e\n\u003cli\u003eBoth disconnect and reconnect setpoints adjustable on board\u003c\/li\u003e\n\u003cli\u003eSeparate sense lead reads true battery terminal voltage under load\u003c\/li\u003e\n\u003cli\u003eAutomatic reconnection once the bank recovers, no manual reset\u003c\/li\u003e\n\u003cli\u003eVery low 0.10 A operating and 50 mA standby draw\u003c\/li\u003e\n\u003cli\u003eRugged vinyl clad aluminium case, isolated for mounting on any surface\u003c\/li\u003e\n\u003cli\u003eMade in the USA\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eTypical Applications\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e48 V telecom and network site battery banks\u003c\/li\u003e\n\u003cli\u003eRadio, microwave and repeater sites with DC backup\u003c\/li\u003e\n\u003cli\u003eOff grid 48 V solar battery systems\u003c\/li\u003e\n\u003cli\u003eAny 48 V load that must be shed before the battery is damaged\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003ePackage Includes\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e1 x Newmar LVD 48-30 low voltage disconnect\u003c\/li\u003e\n\u003cli\u003e2 x quarter inch ring lugs for input and output\u003c\/li\u003e\n\u003cli\u003e1 x number 10 ring lug for the sense connection\u003c\/li\u003e\n\u003cli\u003eRubber insulating boots\u003c\/li\u003e\n\u003cli\u003eNo cabling, battery or mounting hardware is included\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eAdditional Information\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003eThis is a positive ground unit.\u003c\/strong\u003e The switched leg and the sense polarity are inverted relative to Newmar's 12 V and 24 V models, so the sense wire runs from battery positive to the LVD positive sense terminal. It is not interchangeable with the negative ground models in wiring topology. Please confirm your system is positive ground before ordering.\u003c\/p\u003e\u003cp\u003eA low voltage disconnect is battery protection, not load protection. It responds to voltage, not to overcurrent, so it is not a circuit breaker and does not replace one. Fusing or breaker protection is still required.\u003c\/p\u003e\u003cp\u003eNewmar does not assign an IP or NEMA rating to the LVD series, so this should be treated as an indoor or protected enclosure product. There are no status LEDs and no alarm or dry contact outputs on this model.\u003c\/p\u003e\u003cp\u003eThe LVD 48-30 remains a current Newmar product, though Australian distribution is thin and most stock in this market is imported from the United States.\u003c\/p\u003e\u003cp\u003eInstallation must be carried out by a suitably qualified person.\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":"Newmar","offers":[{"title":"Default Title","offer_id":52928351142205,"sku":"S4208","price":220.26,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0953\/8931\/9485\/files\/20260820_172835.jpg?v=1787732258","url":"https:\/\/indrelec.com.au\/products\/newmar-lvd-48-30-low-voltage-disconnect-48v-30a","provider":"Indrelec","version":"1.0","type":"link"}