{"product_id":"dc-dc-solid-state-relay-ssr-10dd-25dd-40dd-single-phase-white-shell","title":"DC-DC Solid State Relay SSR 10DD 25DD 40DD Single Phase CE","description":"\u003ch2\u003eDC-DC Single Phase Solid State Relay – SSR 10DD \/ 25DD \/ 40DD\u003c\/h2\u003e\n\u003cp\u003eUpgrade your automation projects with this high-performance \u003cstrong\u003eDC-controlled DC Solid State Relay (SSR)\u003c\/strong\u003e. Available in 10A, 25A, and 40A ratings, this white-shell SSR features an epoxy-protected design with no moving contacts — meaning silent, spark-free, and ultra-reliable switching for a wide range of industrial and commercial control applications. Made in China.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHigh Reliability \u0026amp; Long Lifespan:\u003c\/strong\u003e Solid-state construction eliminates mechanical wear for consistent, long-term performance.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSpark-Free \u0026amp; Silent Operation:\u003c\/strong\u003e No electric arcs, no noise — ideal for sensitive environments.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLow Electromagnetic Interference:\u003c\/strong\u003e High sensitivity and fast switching speed minimise signal disruption.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLow Drive Voltage \u0026amp; Current:\u003c\/strong\u003e Input control voltage of 3–32V DC; control current just 3–35mA.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEpoxy-Protected Housing:\u003c\/strong\u003e Excellent resistance to moisture, dust, and corrosion — built for harsh environments.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLED Status Indicator:\u003c\/strong\u003e Quickly confirm on\/off operating state at a glance.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCE Certified:\u003c\/strong\u003e Meets European conformity standards for safety and quality.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications (SSR-40DD Model)\u003c\/h3\u003e\n\u003ctable\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eControl Mode\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eDC Control DC (DC–DC)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOutput Current\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e40A\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\u003eOutput Load Voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e5–60V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOn-State Voltage\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\u003eTurn-Off 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\u003eOperating Temperature\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e-30°C to +70°C\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFixing Method\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\u003e62 × 45 × 23.5mm\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCertification\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eCE\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eAvailable Models\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eSSR-10DD (10A)\u003c\/li\u003e\n  \u003cli\u003eSSR-25DD (25A)\u003c\/li\u003e\n  \u003cli\u003eSSR-40DD (40A)\u003c\/li\u003e\n  \u003cli\u003eSSR-50DD, SSR-60DD, SSR-80DD, SSR-100DD also available\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTypical Applications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eIndustrial automation and PLC control systems\u003c\/li\u003e\n  \u003cli\u003eStage lighting control\u003c\/li\u003e\n  \u003cli\u003eMedical instrument switching\u003c\/li\u003e\n  \u003cli\u003eDC motor control\u003c\/li\u003e\n  \u003cli\u003eComputer peripheral connections\u003c\/li\u003e\n  \u003cli\u003eAutomatic fire and safety systems\u003c\/li\u003e\n  \u003cli\u003eTraffic signals, street lights, and signal lighting\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat's in the Box\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e1 × Solid State Relay (SSR) — white shell, no plastic cover\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eYou May Also Like\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/10pcs-2-pin-quick-splice-spring-wire-connectors-lock-terminals\"\u003e10pcs 2-Pin Spring Wire Connectors – Quick Splice Lock Terminals\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/stainless-steel-self-tapping-screws-m2-2-m4-8-phillips-wood-hinge\"\u003e10PCS Stainless Steel Self-Tapping Screws M2.2–M4.8 Phillips\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/12pcs-16mm-momentary-push-button-switch-1no-metal-2-pin-self-reset\"\u003e12pcs 16mm Momentary Push Button Switch 1NO Metal 2-Pin Self-Reset\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eLearn more: \u003ca href=\"https:\/\/www.osha.gov\/personal-protective-equipment\" target=\"_blank\" rel=\"noopener\"\u003eOSHA on personal protective equipment\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: What is the difference between SSR-10DD, SSR-25DD, and SSR-40DD solid state relays?\u003c\/h4\u003e\n\u003cp\u003eA: The numbers refer to the maximum output current rating. The SSR-10DD handles up to 10 amps, the SSR-25DD up to 25 amps, and the SSR-40DD up to 40 amps. All three are DC-controlled DC (DC–DC) models sharing the same input voltage range of 3–32V DC and output load voltage of 5–60V DC. Choose your model based on the current requirements of your specific circuit or load.\u003c\/p\u003e\n\u003ch4\u003eQ: Do these solid state relays require a heat sink?\u003c\/h4\u003e\n\u003cp\u003eA: For higher current applications (especially the 40A model and above), mounting the SSR on a suitable heat sink is strongly recommended to maintain safe operating temperatures and extend the relay's lifespan. The bolted fixing method makes it straightforward to attach to an aluminium heat sink plate.\u003c\/p\u003e\n\u003ch4\u003eQ: What does \"without plastic cover\" mean for this SSR?\u003c\/h4\u003e\n\u003cp\u003eA: \"Without plastic cover\" means the relay uses an open white metal\/epoxy shell design rather than a fully enclosed plastic housing. This allows for better heat dissipation and direct mounting to heat sinks, making it the preferred choice for panel-mount and industrial automation installations.\u003c\/p\u003e\n\u003ch4\u003eQ: Is this solid state relay suitable for outdoor or harsh environments?\u003c\/h4\u003e\n\u003cp\u003eA: Yes. The epoxy-protected construction provides resistance to moisture, dust, and mild corrosion, making it well-suited for use in demanding industrial settings. For fully outdoor, weather-exposed installations, additional IP-rated enclosure protection is recommended.\u003c\/p\u003e\n\u003c!-- production-packaging-notice --\u003e\n\u003ch3\u003eProduction \u0026amp; Packaging Notice\u003c\/h3\u003e\n\u003cp\u003eTo maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What is the difference between SSR-10DD, SSR-25DD, and SSR-40DD solid state relays?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The numbers refer to the maximum output current rating. The SSR-10DD handles up to 10 amps, the SSR-25DD up to 25 amps, and the SSR-40DD up to 40 amps. All three are DC-controlled DC (DC–DC) models sharing the same input voltage range of 3–32V DC and output load voltage of 5–60V DC. 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For fully outdoor, weather-exposed installations, additional IP-rated enclosure protection is recommended.\"}}]}\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:\/\/68k0rh-yt.myshopify.com\/\"}, {\"@type\": \"ListItem\", \"position\": 2, \"name\": \"Home page\", \"item\": \"https:\/\/68k0rh-yt.myshopify.com\/collections\/frontpage\"}, {\"@type\": \"ListItem\", \"position\": 3, \"name\": \"DC-DC Solid State Relay SSR 10DD 25DD 40DD Single Phase CE\", \"item\": \"https:\/\/68k0rh-yt.myshopify.com\/products\/dc-dc-solid-state-relay-ssr-10dd-25dd-40dd-single-phase-white-shell\"}]}\u003c\/script\u003e","brand":"Richie's","offers":[{"title":"SSR-Silver Radiator","offer_id":57605988450470,"sku":"1005002858530686-SSR-Silver Radiator","price":10.97,"currency_code":"USD","in_stock":true},{"title":"SSR-25DD","offer_id":57605988483238,"sku":"1005002858530686-SSR-25DD","price":23.9,"currency_code":"USD","in_stock":true},{"title":"SSR-10DD","offer_id":57605988516006,"sku":"1005002858530686-SSR-10DD","price":23.14,"currency_code":"USD","in_stock":true},{"title":"SSR-60DD","offer_id":57605988548774,"sku":"1005002858530686-SSR-60DD","price":29.17,"currency_code":"USD","in_stock":true},{"title":"SSR-40DD","offer_id":57605988581542,"sku":"1005002858530686-SSR-40DD","price":26.93,"currency_code":"USD","in_stock":true},{"title":"SSR-100DD","offer_id":57605988614310,"sku":"1005002858530686-SSR-100DD","price":37.07,"currency_code":"USD","in_stock":true},{"title":"SSR-80DD","offer_id":57605988647078,"sku":"1005002858530686-SSR-80DD","price":32.2,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0785\/2182\/7494\/files\/H1a218e80dc7143febcccd89c02706dccd.webp?v=1791727674","url":"https:\/\/richiesmart.com\/products\/dc-dc-solid-state-relay-ssr-10dd-25dd-40dd-single-phase-white-shell","provider":"Richie's","version":"1.0","type":"link"}