{"product_id":"relay-4-pin-dc-12v-30a-30-amp-spst-r-zt617-12v-a-r-car-truck","title":"12 V 30 A 4-Pin SPST Automotive Relay for Car and Truck Wiring","description":"\u003cp\u003eA dash switch that has to run a horn or a lamp is asked to carry more current than it wants. This four-pin SPST relay takes 12 V on the coil and switches up to 30 A through one contact pair. For car and truck wiring, alarms, locks and workshop builds.\u003c\/p\u003e\u003ch2\u003eOne small relay between the switch and the load\u003c\/h2\u003e\u003cp style=\"margin:0 0 6px 0\"\u003e✅ \u003cstrong\u003eAdds a circuit cleanly\u003c\/strong\u003e Four pins and a 30 A contact let one dash switch run a horn or a lamp.\u003c\/p\u003e\u003cp style=\"margin:0 0 6px 0\"\u003e✅ \u003cstrong\u003eSmall enough to hide\u003c\/strong\u003e At about 2 by 1.5 by 3.5 cm it fits behind a dash or inside a fuse box.\u003c\/p\u003e\u003cp style=\"margin:0 0 6px 0\"\u003e✅ \u003cstrong\u003eA spare in the toolbox\u003c\/strong\u003e A failed lamp or horn circuit does not have to wait for a parts order.\u003c\/p\u003e\u003cp style=\"margin:0 0 6px 0\"\u003e✅ \u003cstrong\u003eLocks, alarms, boot release\u003c\/strong\u003e The same part switches door lock actuators, alarm outputs, boot release solenoids and small motors.\u003c\/p\u003e\u003cp style=\"margin:0 0 6px 0\"\u003e✅ \u003cstrong\u003eLow current in, high out\u003c\/strong\u003e The coil takes a small control current so the switch does not carry the load itself.\u003c\/p\u003e\u003cp\u003eFour pins and SPST are the details that decide whether this fits the job. The coil takes two pins, the contact pair takes the other two, and the contact is single-throw: it makes or breaks one circuit. A circuit that has to switch an output between two paths needs a five-pin changeover relay instead.\u003c\/p\u003e\u003cp\u003eIn use the coil is wired to the switch or the control output, and the contact pair sits in the feed to the load. That is what lets a thin dash switch or a small control board drive a horn, a lamp, a pump or a lock actuator without carrying the load current itself.\u003c\/p\u003e\u003cp\u003eThe two ratings to check before fitting are the coil voltage and the load. The coil is 12 V DC and the contact is rated 30 A, so a 24 V system or a heavier load needs a different part. The relay is CE marked and arrives one to a pack, which is worth knowing if a pair of spares is the plan.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eTechnical details\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eModel: ZT617-12V-A-R\u003c\/li\u003e\n\u003cli\u003eCoil voltage: 12 V DC\u003c\/li\u003e\n\u003cli\u003eContact rating: 30 A\u003c\/li\u003e\n\u003cli\u003eContact form: SPST, one contact pair\u003c\/li\u003e\n\u003cli\u003ePins: 4\u003c\/li\u003e\n\u003cli\u003eBody size: approx. 2.0 x 1.5 x 3.5 cm\u003c\/li\u003e\n\u003cli\u003eCertification: CE\u003c\/li\u003e\n\u003cli\u003ePack contents: 1 relay\u003c\/li\u003e\n\u003cli\u003eUse: car and truck circuits, alarms, lamps, locks, motors\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cimg title=\"Relay 4 Pin DC 12V 30A 30 AMP SPST R ZT617-12V-A-R Car Truck\" src=\"https:\/\/ae01.alicdn.com\/kf\/Sf85d050bc1ea450ab591f869799c381dL.jpg\" slate-data-type=\"image\"\u003e\u003c\/p\u003e\u003cp\u003e\u003cimg title=\"Relay 4 Pin DC 12V 30A 30 AMP SPST R ZT617-12V-A-R Car Truck\" src=\"https:\/\/ae01.alicdn.com\/kf\/Sa0c5a67c3b2a45ff92ac3f9b3f258e83O.jpg\" slate-data-type=\"image\"\u003e\u003c\/p\u003e\u003cp\u003e\u003cimg title=\"Relay 4 Pin DC 12V 30A 30 AMP SPST R ZT617-12V-A-R Car Truck\" src=\"https:\/\/ae01.alicdn.com\/kf\/Scd711ac69ab2406fa2a843ff2ce546010.jpg\" slate-data-type=\"image\"\u003e\u003c\/p\u003e\u003cp\u003e\u003cimg title=\"Relay 4 Pin DC 12V 30A 30 AMP SPST R ZT617-12V-A-R Car Truck\" src=\"https:\/\/ae01.alicdn.com\/kf\/Scc500ea9bff84c55887d8597b205c13cX.jpg\" slate-data-type=\"image\"\u003e\u003c\/p\u003e\u003cp\u003e\u003cimg title=\"Relay 4 Pin DC 12V 30A 30 AMP SPST R ZT617-12V-A-R Car Truck\" src=\"https:\/\/ae01.alicdn.com\/kf\/S7638a0012f0940249331ba347520e0d4d.jpg\" slate-data-type=\"image\"\u003e\u003c\/p\u003e\u003cp\u003e\u003cimg title=\"Relay 4 Pin DC 12V 30A 30 AMP SPST R ZT617-12V-A-R Car Truck\" src=\"https:\/\/ae01.alicdn.com\/kf\/Sf45aa101d61643089c5dcb3f7e76e1eeE.jpg\" slate-data-type=\"image\"\u003e\u003c\/p\u003e\u003cp\u003eCheck the coil voltage and load on your circuit, then keep a spare relay in the toolbox.\u003c\/p\u003e\u003cp\u003eSee more: \u003ca href=\"https:\/\/spy-shop.com\/collections\/power-energy\"\u003eexplore more power and electrical components\u003c\/a\u003e\u003c\/p\u003e","brand":"Spy-shop.com","offers":[{"title":"Default Title","offer_id":64123900461386,"sku":"1005006624108685-Default Title","price":23.66,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0764\/5980\/2954\/files\/Sf85d050bc1ea450ab591f869799c381dL.webp?v=1793144978","url":"https:\/\/spy-shop.com\/products\/relay-4-pin-dc-12v-30a-30-amp-spst-r-zt617-12v-a-r-car-truck","provider":"Spy-shop.com","version":"1.0","type":"link"}