{"product_id":"solid-state-relay-ssr-da-10a-25a-40a-dc-to-ac-24-380v","title":"Solid State Relay SSR-DA 10A 25A 40A DC to AC 24–380V","description":"\u003ch2\u003eSolid State Relay SSR-DA Series — Reliable DC-to-AC Switching\u003c\/h2\u003e\n\u003cp\u003eUpgrade your electrical control systems with this high-performance \u003cstrong\u003eSolid State Relay (SSR-DA Series)\u003c\/strong\u003e. Available in multiple current ratings — 10A, 25A, 40A, 60A, 80A, and 100A — this sealed SSR provides smooth, silent, and spark-free switching from a low-voltage DC control signal to a high-voltage AC load. Ideal for industrial automation, temperature controllers, heating systems, and DIY electronics projects.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWide Input Voltage Range:\u003c\/strong\u003e 3–32V DC control signal\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAC Load Voltage:\u003c\/strong\u003e 24–380V AC output — suitable for most global mains voltages\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMultiple Current Ratings:\u003c\/strong\u003e 10A, 25A, 40A, 60A, 80A, 100A to suit your application\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLow Control Current:\u003c\/strong\u003e \u0026lt;25mA — compatible with microcontrollers, PLCs, and logic circuits\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFast Switching:\u003c\/strong\u003e On\/off time ≤10ms for responsive control\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLow On-State Voltage Drop:\u003c\/strong\u003e ≤1.5V for minimal heat generation\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLow Leakage Current:\u003c\/strong\u003e ≤2mA off-state leakage\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLED Status Indicator:\u003c\/strong\u003e Visual confirmation of relay activation\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSealed \u0026amp; Compact Design:\u003c\/strong\u003e Fully sealed housing (67.5 × 50.3 × 28mm) with bolted fixing for secure panel mounting\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eGeneral Purpose:\u003c\/strong\u003e Suitable for a wide range of AC load switching applications\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eModels Available\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSSR-10DA, SSR-25DA, SSR-40DA, SSR-60DA, SSR-80DA, SSR-100DA\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eControl Mode\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eDC Control AC (DC-AC)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInput Voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e3–32V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eLoad Voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e24–380V AC\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOutput Current\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e10A \/ 25A \/ 40A \/ 60A \/ 80A \/ 100A\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eControl Current\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u0026lt;25mA\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOn-State Voltage Drop\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e≤1.5V\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSwitching Time\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e≤10ms\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOff Leakage Current\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e≤2mA\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eStatus Indicator\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eLED\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMounting\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eBolted\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDimensions\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e67.5 × 50.3 × 28mm\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePower Source\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eDC\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCountry of Origin\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMade in China\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eWho Is This For?\u003c\/h3\u003e\n\u003cp\u003eThis SSR is perfect for electronics hobbyists, engineers, and automation professionals who need a compact, efficient, and dependable switching component. Whether you're building a PID temperature controller, automating industrial machinery, or adding smart switching to a DIY project, the SSR-DA series delivers consistent performance.\u003c\/p\u003e\n\n\u003ch3\u003eRelated Products You May Like\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/air-compressor-pressure-gauge-0-10-0-12-0-25-bar-hydraulic-diy\"\u003eAir Compressor Pressure Gauge 0–10\/0–12\/0–25 Bar | DIY Tool\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/electromagnetic-induction-tester-coil-motherboard-fault-detector\"\u003eElectromagnetic Induction Tester – Coil \u0026amp; Circuit Fault Detector\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eLearn more: \u003ca href=\"https:\/\/www.osha.gov\/hand-power-tools\" target=\"_blank\" rel=\"noopener\"\u003eOSHA guidance on hand and power tools\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: What is a solid state relay (SSR) and how does it work?\u003c\/h4\u003e\n\u003cp\u003eA: A solid state relay (SSR) is an electronic switching device that uses semiconductor components — rather than mechanical contacts — to switch an AC load on and off using a low-power DC control signal. The SSR-DA series accepts a 3–32V DC input and switches AC loads from 24–380V, making it silent, spark-free, and highly durable compared to traditional mechanical relays.\u003c\/p\u003e\n\u003ch4\u003eQ: Which current rating SSR-DA model should I choose?\u003c\/h4\u003e\n\u003cp\u003eA: Choose a model rated at least 1.5–2× your expected load current for reliable long-term operation. For example, if your AC load draws 15A, the SSR-25DA (25A rating) is a safe choice. Available ratings are 10A, 25A, 40A, 60A, 80A, and 100A to cover a wide range of applications.\u003c\/p\u003e\n\u003ch4\u003eQ: Is this SSR compatible with Arduino, Raspberry Pi, or PLCs?\u003c\/h4\u003e\n\u003cp\u003eA: Yes. The SSR-DA series requires a control current of less than 25mA at 3–32V DC, which is well within the output capabilities of microcontrollers like Arduino and Raspberry Pi GPIO pins, as well as most PLCs and logic controllers. No additional driver circuit is typically needed.\u003c\/p\u003e\n\u003ch4\u003eQ: How should the SSR be mounted for best performance?\u003c\/h4\u003e\n\u003cp\u003eA: The SSR is designed for bolted panel mounting. For higher current models (40A and above), mounting on an aluminium heat sink is strongly recommended to dissipate heat generated during continuous operation and ensure long-term reliability.\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What is a solid state relay (SSR) and how does it work?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"A solid state relay (SSR) is an electronic switching device that uses semiconductor components — rather than mechanical contacts — to switch an AC load on and off using a low-power DC control signal. 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