{"product_id":"three-phase-solid-state-relay-ssr-10a-200a-dc-ac-control","title":"Three-Phase Solid State Relay SSR 10A–200A | DC AC Control","description":"\n\u003ch2\u003eThree-Phase Solid State Relay (SSR) — 10A to 200A | Model SSR-3\u003c\/h2\u003e\n\n\u003cp\u003eUpgrade your industrial or automation control systems with this versatile \u003cstrong\u003eThree-Phase Solid State Relay (SSR)\u003c\/strong\u003e. Available in current ratings from \u003cstrong\u003e10A to 200A\u003c\/strong\u003e, this SSR supports both \u003cstrong\u003eDC-to-AC and AC-to-AC control modes\u003c\/strong\u003e, making it an ideal switching solution for motors, heaters, lighting systems, and general-purpose industrial equipment.\u003c\/p\u003e\n\n\u003cp style=\"color:#c00; font-weight:bold;\"\u003e⚠️ Important: This relay must be used in conjunction with a compatible heat sink \/ radiator to ensure safe and reliable operation.\u003c\/p\u003e\n\n\u003ch3\u003eKey Specifications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Three-Phase Solid State Relay\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eModel:\u003c\/strong\u003e SSR-3\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOutput Current Range:\u003c\/strong\u003e 10A, 25A, 40A, 60A, 80A, 100A, 120A, 150A, 200A\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eControl Voltage:\u003c\/strong\u003e 3–32V DC\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eControl Mode:\u003c\/strong\u003e DC Control AC \/ AC Control AC\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLoad Voltage:\u003c\/strong\u003e 24–480V AC\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHigh-Concern Chemicals:\u003c\/strong\u003e None\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCountry of Origin:\u003c\/strong\u003e Made in Mainland China\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhy Choose a Solid State Relay?\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e✅ \u003cstrong\u003eNo moving parts\u003c\/strong\u003e — silent operation and longer service life compared to mechanical relays\u003c\/li\u003e\n  \u003cli\u003e✅ \u003cstrong\u003eFast switching\u003c\/strong\u003e — precise, near-instant response for demanding control applications\u003c\/li\u003e\n  \u003cli\u003e✅ \u003cstrong\u003eWide current range\u003c\/strong\u003e — one product line covers light-duty to heavy-duty three-phase loads\u003c\/li\u003e\n  \u003cli\u003e✅ \u003cstrong\u003eDual control modes\u003c\/strong\u003e — supports both DC input (3–32V) and AC input control signals\u003c\/li\u003e\n  \u003cli\u003e✅ \u003cstrong\u003eBroad load voltage range\u003c\/strong\u003e — compatible with 24–480V AC industrial systems\u003c\/li\u003e\n  \u003cli\u003e✅ \u003cstrong\u003eGeneral purpose design\u003c\/strong\u003e — suitable for automation panels, CNC machines, industrial heaters, and more\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTypical Applications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eIndustrial heating and temperature control systems\u003c\/li\u003e\n  \u003cli\u003eThree-phase motor control panels\u003c\/li\u003e\n  \u003cli\u003eCNC machine tool switching\u003c\/li\u003e\n  \u003cli\u003eAutomation and PLC-driven load switching\u003c\/li\u003e\n  \u003cli\u003eCommercial lighting control\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eRelated Products You May Find Useful\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\n\u003ch4\u003eQ: What current ratings are available for this three-phase solid state relay?\u003c\/h4\u003e\n\u003cp\u003eA: This SSR-3 series three-phase solid state relay is available in nine current ratings: 10A, 25A, 40A, 60A, 80A, 100A, 120A, 150A, and 200A. Choose the rating that matches your load requirements, always factoring in an appropriate safety margin above your expected operating current.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Does this solid state relay require a heat sink?\u003c\/h4\u003e\n\u003cp\u003eA: Yes — a heat sink (radiator) is required for safe operation. Solid state relays generate heat during switching, and without adequate thermal management, the relay may overheat and fail. Always mount the SSR onto a properly rated heat sink and ensure adequate airflow in your enclosure.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Can this SSR be controlled by a PLC or microcontroller output?\u003c\/h4\u003e\n\u003cp\u003eA: Yes. The control input voltage range of 3–32V DC is compatible with most PLC digital output cards, Arduino, Raspberry Pi, and similar microcontroller platforms operating at 3.3V or 5V logic, as well as standard 12V and 24V industrial control signals.\u003c\/p\u003e\n\n\u003ch4\u003eQ: What is the difference between DC Control AC and AC Control AC modes?\u003c\/h4\u003e\n\u003cp\u003eA: In DC Control AC (DC-AC) mode, a low-voltage DC signal (3–32V DC) switches a high-voltage AC load — this is the most common configuration for PLC and microcontroller-based systems. In AC Control AC (AC-AC) mode, an AC control signal is used to switch the AC load, which suits applications where the control signal is derived from an AC source.\u003c\/p\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What current ratings are available for this three-phase solid state relay?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"This SSR-3 series three-phase solid state relay is available in nine current ratings: 10A, 25A, 40A, 60A, 80A, 100A, 120A, 150A, and 200A. Choose the rating that matches your load requirements, always factoring in an appropriate safety margin above your expected operating current.\"}}, {\"@type\": \"Question\", \"name\": \"Does this solid state relay require a heat sink?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes — a heat sink (radiator) is required for safe operation. 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