{"product_id":"hamolar-2-pack-12v-200-amp-continuous-duty-relay-switch-car","title":"Hamolar 2 Pack 12V 200 Amp Continuous Duty Relay Switch Car","description":"\u003cp\u003e\u003cstrong\u003eHamolar's 2-pack 12V 200A continuous-duty SPST relays are heavy-duty make\/break switches built for split-charge, starter and high-current automotive, marine, and truck applications.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThese relays combine rugged construction, silver-plated contacts and alloy terminals to deliver reliable high-current switching for 12V systems up to 14V. Supplied as a pair, the relays are rated for 200 amps continuous duty and include terminals and gaskets to simplify installation. Designed with flame-retardant housings and robust internal parts, they are appropriate for split-charge setups, starter isolation, auxiliary power routing and other heavy-load circuits where a dependable, low-resistance switch is needed.\u003c\/p\u003e\n\n\u003ch3\u003eHow does this relay handle heavy current without overheating?\u003c\/h3\u003e\n\n\u003cp\u003eThe Hamolar relay uses silver-plated internal contacts and high-quality alloy terminals to reduce resistance and heat buildup during prolonged high-current operation. Its continuous 200A rating means it’s engineered to carry sustained loads rather than brief surges, and the flame-retardant housing helps contain heat safely.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eSilver-plated contacts lower electrical resistance for cooler operation.\u003c\/li\u003e\n  \u003cli\u003eAlloy terminals provide firm, corrosion-resistant connections.\u003c\/li\u003e\n  \u003cli\u003e200A continuous duty rating supports sustained high loads.\u003c\/li\u003e\n  \u003cli\u003eFlame-retardant casing for safer thermal performance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eCan I use these relays for split charging between two batteries?\u003c\/h3\u003e\n\n\u003cp\u003eYes — the 4-terminal SPST design is commonly used to isolate or link batteries in split-charge arrangements, allowing charging sources to feed a secondary battery only when required. The relays’ make\/break action reliably connects or disconnects battery banks while handling the high currents typical of starter and charging systems.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eSimple SPST operation for on\/off battery linking.\u003c\/li\u003e\n  \u003cli\u003e200A capacity covers most starter and alternator currents.\u003c\/li\u003e\n  \u003cli\u003eGaskets and terminals included to ease wiring and sealing.\u003c\/li\u003e\n  \u003cli\u003eWorks with 12V (up to 14V) vehicle and marine systems.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat installation details should I know before wiring one of these relays?\u003c\/h3\u003e\n\n\u003cp\u003eInstallation is straightforward but requires correct terminal connections and secure mounting to handle vibration. Each relay has four terminals: two for the switching circuit and two for the coil\/control; use appropriately sized cables and torque for the high-current terminals and fit the supplied gaskets to protect against moisture.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eUse heavy-gauge cable for the 200A load terminals.\u003c\/li\u003e\n  \u003cli\u003eSecurely torque terminals to prevent heating at contact points.\u003c\/li\u003e\n  \u003cli\u003eMount in a vibration-resistant location with the gasket fitted.\u003c\/li\u003e\n  \u003cli\u003eConfirm coil voltage is 12VDC (maximum 14V) before connecting.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow long will these relays last in real-world conditions?\u003c\/h3\u003e\n\n\u003cp\u003eDurability depends on load, environment and installation, but the Hamolar relays are built from flame-retardant materials and plated contacts to extend service life under heavy use. Regular maintenance—tightening terminals and avoiding prolonged corrosion exposure—will maximize lifespan for automotive, marine or truck installations.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003ePlated contacts resist wear and corrosion for longer cycles.\u003c\/li\u003e\n  \u003cli\u003eRobust casing resists heat and flame for safer operation.\u003c\/li\u003e\n  \u003cli\u003eSupplied gaskets protect terminals from moisture and salt air.\u003c\/li\u003e\n  \u003cli\u003eDesigned for continuous duty rather than intermittent-only use.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for? This 2-pack is intended for mechanics, boat owners, truck drivers, fleet managers and DIYers who need a reliable, high-current switching solution for 12V systems. It’s especially useful when you need to split-charge batteries, isolate a starter circuit, or route heavy accessory loads safely. If you require a continuous-duty, high-amp relay with durable materials and simple installation accessories, these Hamolar relays are a practical, cost-effective choice.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Are these relays waterproof for marine use?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: They’re not fully waterproof but include gaskets to help seal terminals; suitable for marine environments when mounted and sealed correctly.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Can each relay handle starter motor currents?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes, with a 200A continuous rating they can manage many starter and alternator currents when wired with appropriate cable.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Hamolar","offers":[{"title":"Default Title","offer_id":48086836248734,"sku":"B096QGR24M","price":33.48,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/hamolar-relay-front-packaging.jpg?v=1785907333","url":"https:\/\/northtrailauto.ca\/products\/hamolar-2-pack-12v-200-amp-continuous-duty-relay-switch-car","provider":"North Trail Auto","version":"1.0","type":"link"}