{"product_id":"fotek-ssr-75da-solid-state-relay-75a-dc-ac","title":"FOTEK SSR-75DA Solid State Relay 75A DC to AC Control","description":"\n\u003ch2\u003eFOTEK SSR-75DA Solid State Relay – Reliable 75A DC-Controlled Switching\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eFOTEK SSR-75DA Solid State Relay\u003c\/strong\u003e is a high-capacity, industrial-grade switching component designed for demanding electrical control applications. With a 75-amp load rating and DC input control, this solid state relay (SSR) offers fast, silent, and spark-free switching — making it a dependable choice for temperature controllers, industrial automation, heating systems, and more.\u003c\/p\u003e\n\n\u003cp\u003eUnlike traditional mechanical relays, solid state relays have no moving parts, resulting in longer service life, reduced electrical noise, and faster response times. The SSR-75DA is compatible with a wide range of control systems including PID temperature controllers, PLCs, and microcontrollers.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eModel:\u003c\/strong\u003e SSR-75DA (DC Input, AC Output)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLoad Capacity:\u003c\/strong\u003e 75 Amps\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eControl Input:\u003c\/strong\u003e DC signal (typically 3–32V DC)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOutput:\u003c\/strong\u003e AC load switching\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Durable plastic housing\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNo moving parts\u003c\/strong\u003e — silent, long-lasting operation\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFast switching response\u003c\/strong\u003e for precise control\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWide compatibility\u003c\/strong\u003e with PID controllers, PLCs, and automation systems\u003c\/li\u003e\n  \u003cli\u003e\u003cstrong\u003eMade in Mainland China\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eCommon Applications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eIndustrial heating and temperature control systems\u003c\/li\u003e\n  \u003cli\u003ePID temperature controller output stages\u003c\/li\u003e\n  \u003cli\u003eCNC machine tool control\u003c\/li\u003e\n  \u003cli\u003ePlastic molding and packaging equipment\u003c\/li\u003e\n  \u003cli\u003eAutomation and motor control panels\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhy Choose a Solid State Relay?\u003c\/h3\u003e\n\u003cp\u003eSolid state relays provide several advantages over electromechanical relays: they generate less electromagnetic interference (EMI), require no maintenance, switch silently, and deliver consistent performance over millions of switching cycles. For applications requiring frequent on\/off cycling or precise load control, the SSR-75DA is an excellent solution.\u003c\/p\u003e\n\n\u003cp\u003eFor more information on electrical safety standards and best practices when working with high-current switching components, visit \u003ca href=\"https:\/\/www.osha.gov\/electrical\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eOSHA Electrical Safety Guidelines\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003ch3\u003eRelated Products You May Like\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/1-percent-better-every-day-motivational-canvas-wall-art-print\"\u003e\"1% Better Every Day\" Motivational Canvas Wall Art Print\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/everything-is-fine-trust-government-mens-graphic-t-shirt-cotton\"\u003e\"Everything Is Fine\" Funny Men's Graphic T-Shirt\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: What does SSR-75DA mean on a solid state relay?\u003c\/h4\u003e\n\u003cp\u003eA: The designation SSR-75DA indicates a \u003cstrong\u003eSolid State Relay\u003c\/strong\u003e with a \u003cstrong\u003e75-amp\u003c\/strong\u003e load capacity, a \u003cstrong\u003eDC\u003c\/strong\u003e control input, and an \u003cstrong\u003eAC\u003c\/strong\u003e output switching capability. It is designed to be triggered by a low-voltage DC signal (typically 3–32V DC) to switch high-voltage AC loads up to 75 amps.\u003c\/p\u003e\n\u003ch4\u003eQ: Is the FOTEK SSR-75DA compatible with PID temperature controllers?\u003c\/h4\u003e\n\u003cp\u003eA: Yes. The FOTEK SSR-75DA solid state relay is widely used as the output stage for PID temperature controllers. Its DC-compatible control input works seamlessly with the relay output terminals found on most standard PID controllers used in heating, kiln, and process control applications.\u003c\/p\u003e\n\u003ch4\u003eQ: Does this solid state relay require a heat sink?\u003c\/h4\u003e\n\u003cp\u003eA: At high load currents (especially above 25–30A continuous), it is strongly recommended to mount the SSR-75DA on an appropriate aluminum heat sink to dissipate thermal energy and ensure reliable long-term operation. Operating without a heat sink at full load may reduce the lifespan of the relay.\u003c\/p\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What does SSR-75DA mean on a solid state relay?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The designation SSR-75DA indicates a Solid State Relay with a 75-amp load capacity, a DC control input, and an AC output switching capability. It is designed to be triggered by a low-voltage DC signal (typically 3–32V DC) to switch high-voltage AC loads up to 75 amps.\"}}, {\"@type\": \"Question\", \"name\": \"Is the FOTEK SSR-75DA compatible with PID temperature controllers?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes. The FOTEK SSR-75DA solid state relay is widely used as the output stage for PID temperature controllers. Its DC-compatible control input works seamlessly with the relay output terminals found on most standard PID controllers used in heating, kiln, and process control applications.\"}}, {\"@type\": \"Question\", \"name\": \"Does this solid state relay require a heat sink?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"At high load currents (especially above 25–30A continuous), it is strongly recommended to mount the SSR-75DA on an appropriate aluminum heat sink to dissipate thermal energy and ensure reliable long-term operation. Operating without a heat sink at full load may reduce the lifespan of the relay.\"}}]}\u003c\/script\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"BreadcrumbList\", \"itemListElement\": [{\"@type\": \"ListItem\", \"position\": 1, \"name\": \"Home\", \"item\": \"https:\/\/vd0uzy-jp.myshopify.com\/\"}, {\"@type\": \"ListItem\", \"position\": 2, \"name\": \"Soldering \u0026 Electrical\", \"item\": \"https:\/\/vd0uzy-jp.myshopify.com\/collections\/soldering-electrical\"}, {\"@type\": \"ListItem\", \"position\": 3, \"name\": \"FOTEK SSR-75DA Solid State Relay 75A DC to AC Control\", \"item\": \"https:\/\/vd0uzy-jp.myshopify.com\/products\/fotek-ssr-75da-solid-state-relay-75a-dc-ac\"}]}\u003c\/script\u003e","brand":"Peaceful Pleasures Health and Wellness","offers":[{"title":"SSR-75DA \/ -75A-24-SSR-75DA","offer_id":53658518618425,"sku":"1005010143056521-SSR-75DA--75A-24-SSR-75DA","price":78.63,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0933\/3689\/5801\/files\/S18c8df1589264d63ac4afdee2e6de66fR.webp?v=1782831138","url":"https:\/\/peacefulpleasureswellness.com\/products\/fotek-ssr-75da-solid-state-relay-75a-dc-ac","provider":"Peaceful Pleasures Health and Wellness","version":"1.0","type":"link"}