{"product_id":"sterling-12v-140a-split-charge-relay-voltage-sensitive-relay-vsr-campervan-marine","title":"Sterling 140A Voltage Sensitive Relay - 12V VSR, Campervan \u0026 Marine","description":"\u003cp\u003e\u003cstrong\u003eSterling 140A Voltage Sensitive Relay (VSR)\u003c\/strong\u003e — a genuine Sterling Automotive Electrics 12V voltage sensitive relay, designed to safely charge two separate battery banks from a single charging source, such as a vehicle alternator, without risking a flat starter battery.\u003c\/p\u003e\n\n\u003cp\u003eBy monitoring battery voltage, the VSR automatically connects the secondary (leisure) battery only when the primary battery is fully charged. When voltage drops, the relay disconnects, ensuring your starter battery is always protected.\u003c\/p\u003e\n\n\u003cp\u003eWith dual-sensing technology, the relay can detect charging from either battery. This allows charging from external sources such as solar panels or mains chargers, making it ideal for campervans, motorhomes, boats, and 4x4s.\u003c\/p\u003e\n\n\u003cp\u003eThe solid-state, encapsulated design offers zero voltage drop, no moving parts, and excellent reliability in demanding environments.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e\u003cbr\u003eSterling Automotive Electrics\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eVoltage\u003c\/strong\u003e\u003cbr\u003e12V DC\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eCurrent rating\u003c\/strong\u003e\u003cbr\u003e140A continuous\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eSense type\u003c\/strong\u003e\u003cbr\u003eDual sensing (both batteries)\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eCut-in voltage\u003c\/strong\u003e\u003cbr\u003e13.3V DC\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eCut-out voltage\u003c\/strong\u003e\u003cbr\u003e12.8V DC\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eIndicator\u003c\/strong\u003e\u003cbr\u003eLED on when engaged\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eStud size\u003c\/strong\u003e\u003cbr\u003eM6\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eGround connection\u003c\/strong\u003e\u003cbr\u003eNegative (0.5m\/18 AWG wire)\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eConstruction\u003c\/strong\u003e\u003cbr\u003eEncapsulated solid-state\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eIgnition protection\u003c\/strong\u003e\u003cbr\u003eUL1107 compliant\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eApprovals\u003c\/strong\u003e\u003cbr\u003eCE\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003cbr\u003e0.2kg\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eDimensions\u003c\/strong\u003e\u003cbr\u003e68mm x 68mm x 49mm\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eIdeal for\u003c\/strong\u003e\u003cbr\u003eCampervan and motorhome conversions, split charging systems, marine and boat battery setups, 4x4 and off-grid vehicle builds, alternator, solar or mains charging systems\u003c\/p\u003e\n\n\u003cp\u003eMust be correctly earthed for proper operation. For 12V systems only.\u003c\/p\u003e\n\n\u003cp\u003eAlso known as a VSR, split charge relay, or voltage sensing relay.\u003c\/p\u003e","brand":"DH \u0026 JS Trading Ltd","offers":[{"title":"Default Title","offer_id":56505151193466,"sku":"RY80","price":39.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/2239\/6850\/files\/RY80_c3633caa-9d69-4c2f-b1d8-aab88830ce63.jpg?v=1770382134","url":"https:\/\/www.dhjstrading.com\/products\/sterling-12v-140a-split-charge-relay-voltage-sensitive-relay-vsr-campervan-marine","provider":"DH \u0026 JS Trading Ltd","version":"1.0","type":"link"}