{"product_id":"victron-cyrix-battery-combiner-relay-vsr-12v-24v-120a","title":"Victron Cyrix Battery Combiner Relay VSR (12V \u0026 24V \/ 120A)","description":"\u003cp\u003eThe Victron Cyrix-ct 12\/24V 120A Battery Combiner Relay is an intelligent voltage-sensitive relay (VSR) designed to automatically connect and disconnect battery banks based on voltage levels. Ideal for dual-battery systems in campervans, motorhomes, caravans, boats, and off-grid installations, the Cyrix ensures efficient charging of multiple batteries from a single charging source without the voltage drop associated with traditional diode isolators.\u003c\/p\u003e\u003cp\u003eUnlike conventional split-charge systems, the Cyrix continuously monitors battery voltage and intelligently connects battery banks when charging is detected. Once charging ceases and battery voltage falls, the relay automatically disconnects the batteries, helping to protect the starter battery from accidental discharge while ensuring maximum charging efficiency.\u003c\/p\u003e\u003cp\u003eSuitable for both 12V and 24V systems, the Cyrix-ct 120A offers a simple, reliable, and highly efficient solution for managing multiple battery banks in mobile and marine power systems.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eIntelligent voltage-sensitive battery combiner relay\u003c\/li\u003e\n\u003cli\u003eAutomatically connects and disconnects battery banks\u003c\/li\u003e\n\u003cli\u003eSuitable for both 12V and 24V systems\u003c\/li\u003e\n\u003cli\u003eContinuous current rating of 120A\u003c\/li\u003e\n\u003cli\u003eNo voltage drop unlike traditional diode isolators\u003c\/li\u003e\n\u003cli\u003ePrioritises charging of the starter battery before connecting auxiliary batteries\u003c\/li\u003e\n\u003cli\u003eBi-directional voltage sensing\u003c\/li\u003e\n\u003cli\u003eEmergency parallel start function\u003c\/li\u003e\n\u003cli\u003eFully automatic operation\u003c\/li\u003e\n\u003cli\u003eLow power consumption\u003c\/li\u003e\n\u003cli\u003eCompact and robust design\u003c\/li\u003e\n\u003cli\u003eSuitable for leisure, marine, and off-grid applications\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eManufacturer\u003c\/td\u003e\n\u003ctd\u003eVictron Energy\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003eCyrix-ct 12\/24V 120A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePart Number\u003c\/td\u003e\n\u003ctd\u003eCYR010120011\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSystem Voltage\u003c\/td\u003e\n\u003ctd\u003e12V \/ 24V Auto Detect\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eContinuous Current Rating\u003c\/td\u003e\n\u003ctd\u003e120A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePeak Current (5 Seconds)\u003c\/td\u003e\n\u003ctd\u003e180A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePeak Current (1 Second)\u003c\/td\u003e\n\u003ctd\u003e240A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConnect Voltage (12V System)\u003c\/td\u003e\n\u003ctd\u003eApprox. 13.0V to 13.8V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDisconnect Voltage (12V System)\u003c\/td\u003e\n\u003ctd\u003eApprox. 11.0V to 12.8V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConnect Voltage (24V System)\u003c\/td\u003e\n\u003ctd\u003eApprox. 26.0V to 27.6V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDisconnect Voltage (24V System)\u003c\/td\u003e\n\u003ctd\u003eApprox. 22.0V to 25.7V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption (Open)\u003c\/td\u003e\n\u003ctd\u003e\u0026lt;4mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption (Closed)\u003c\/td\u003e\n\u003ctd\u003eApprox. 12mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions (H x W x D)\u003c\/td\u003e\n\u003ctd\u003e46 x 46 x 80mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003eApprox. 110g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProtection Rating\u003c\/td\u003e\n\u003ctd\u003eIP54\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temperature\u003c\/td\u003e\n\u003ctd\u003e-40°C to +50°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e5 Years\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch2\u003eHow It Works\u003c\/h2\u003e\u003cp\u003eThe Cyrix monitors the voltage of connected batteries:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eWhen a charging source such as an alternator, solar charger, battery charger, or inverter\/charger raises the battery voltage above a preset threshold, the relay automatically closes and combines the battery banks.\u003c\/li\u003e\n\u003cli\u003eBoth batteries are then charged simultaneously.\u003c\/li\u003e\n\u003cli\u003eWhen charging stops and voltage falls below the disconnect threshold, the relay automatically opens, isolating the batteries and preventing unwanted discharge.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eThis intelligent operation ensures optimal battery charging while protecting critical starter batteries.\u003c\/p\u003e\u003ch2\u003eIdeal Applications\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eCampervans and motorhomes\u003c\/li\u003e\n\u003cli\u003eCaravans\u003c\/li\u003e\n\u003cli\u003eMarine and boating electrical systems\u003c\/li\u003e\n\u003cli\u003e4x4 and overland vehicles\u003c\/li\u003e\n\u003cli\u003eDual-battery charging systems\u003c\/li\u003e\n\u003cli\u003eSolar-powered battery banks\u003c\/li\u003e\n\u003cli\u003eOff-grid power installations\u003c\/li\u003e\n\u003cli\u003eBackup battery systems\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eWhy Choose the Victron Cyrix-ct 120A?\u003c\/h2\u003e\u003cp\u003eThe Victron Cyrix-ct 120A offers a smarter and more efficient alternative to traditional split-charge relays and diode battery isolators. By automatically managing battery connections based on voltage levels, it maximises charging efficiency, eliminates unnecessary voltage loss, and protects battery banks from unwanted discharge. Compact, reliable, and easy to install, it is a trusted solution for dual-battery systems across leisure, marine, and off-grid applications.\u003c\/p\u003e","brand":"Victron","offers":[{"title":"Default Title","offer_id":53221106450698,"sku":"VC-CYR010120011","price":45.66,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0951\/2615\/9626\/files\/image_e8b7f8ff-adea-4541-b0c3-2c6d517f38f2.png?v=1781888677","url":"https:\/\/trekkashop.com\/products\/victron-cyrix-battery-combiner-relay-vsr-12v-24v-120a","provider":"Trekkashop","version":"1.0","type":"link"}