{"product_id":"4000w-ac-scr-voltage-regulator-dimmer-motor-speed-temperature-controller-6-pack","title":"4000W AC SCR Voltage Regulator Dimmer \u0026 Motor Speed Controller","description":"\n\u003ch2\u003e4000W AC SCR Voltage Regulator – Dimmer, Speed \u0026amp; Temperature Controller (6-Pack)\u003c\/h2\u003e\n\n\u003cp\u003eTake precise control of your electrical appliances with this heavy-duty \u003cstrong\u003e4000W AC SCR Voltage Regulator\u003c\/strong\u003e. Engineered with a bidirectional high-power thyristor rated up to 40 amps, this controller delivers smooth, stepless adjustment for electric furnaces, water heaters, lamp dimmers, small motors, and electric irons — all from a single compact unit. This listing includes a convenient \u003cstrong\u003e6-pack set\u003c\/strong\u003e, ideal for workshops, small factories, or multi-station setups.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eMade in Mainland China.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHigh-Power Thyristor Design:\u003c\/strong\u003e Handles up to 40A current, eliminating over-current issues caused by low-resistance furnace wire under cooling conditions.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e0–100% Voltage Adjustment:\u003c\/strong\u003e 100-level non-linear adjustment across AC 220V — fine-tune output for dimming lights, regulating temperature, or controlling motor speed with ease.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWide Application Range:\u003c\/strong\u003e Suitable for electric furnaces, water heaters, lamp dimmers, small electric motors, and electric irons. Ideal for appliances up to 4000W (recommended continuous use up to 2000W at room temperature).\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePlug-and-Play Ready:\u003c\/strong\u003e No additional components required — the bidirectional thyristor is built in and ready to use straight out of the box.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBuilt-In Heat Sink:\u003c\/strong\u003e Comes with an integrated heat sink for improved thermal management during extended operation.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eIncludes Switch Panel \u0026amp; Cable:\u003c\/strong\u003e Each unit ships with a switch panel and cable for quick, straightforward installation.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable style=\"width:100%; border-collapse:collapse;\"\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd style=\"padding:6px; border:1px solid #ddd;\"\u003e\u003cstrong\u003eInput Voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:6px; border:1px solid #ddd;\"\u003eAC 220V\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"padding:6px; border:1px solid #ddd;\"\u003e\u003cstrong\u003eMaximum Power\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:6px; border:1px solid #ddd;\"\u003e4000W (resistive load limit); recommended ≤2000W continuous at room temperature\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"padding:6px; border:1px solid #ddd;\"\u003e\u003cstrong\u003eCurrent Rating\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:6px; border:1px solid #ddd;\"\u003eUp to 40A\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"padding:6px; border:1px solid #ddd;\"\u003e\u003cstrong\u003eVoltage Adjustment Range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:6px; border:1px solid #ddd;\"\u003e0–100% (100 levels, non-linear)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"padding:6px; border:1px solid #ddd;\"\u003e\u003cstrong\u003eEU LVD Voltage Class\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:6px; border:1px solid #ddd;\"\u003eHigh Voltage: Above 50V AC or 75V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"padding:6px; border:1px solid #ddd;\"\u003e\u003cstrong\u003eMaterials\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:6px; border:1px solid #ddd;\"\u003ePCB + Metal + Electronic Accessories\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"padding:6px; border:1px solid #ddd;\"\u003e\u003cstrong\u003eWireless\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:6px; border:1px solid #ddd;\"\u003eNo\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"padding:6px; border:1px solid #ddd;\"\u003e\u003cstrong\u003eBattery Required\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:6px; border:1px solid #ddd;\"\u003eNo\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003ePackage Contents (×6 Sets)\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e6 × 4000W SCR Voltage Regulator\u003c\/li\u003e\n  \u003cli\u003e6 × Switch Panel\u003c\/li\u003e\n  \u003cli\u003e6 × Cable\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cem\u003eNote: Due to lighting and display variation, product color may appear slightly different from images. Measurement tolerance: ±1–3 cm.\u003c\/em\u003e\u003c\/p\u003e\n\n\u003ch3\u003eYou May Also Like\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/10-in-1-multi-functional-bone-wrench-hex-socket-spanner-portable-repair-hand-tool-for-bicycle-motorcycle-furniture-assembly\"\u003e10-in-1 Multi-Functional Bone Wrench Hex Socket Spanner\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/a01f-df-6-electric-enameled-copper-wire-stripping-machine\"\u003eA01F-DF-6 Handheld Electric Enameled Copper Wire Stripper 110V\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/16-in-1-multi-function-bike-repair-tool-portable-folding-hex-wrench-set-for-bicycle-motorcycle-furniture-maintenance-hand-tools\"\u003e16-in-1 Multi-Function Bike Repair Tool Portable Folding Hex Wrench Set\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 types of appliances can the 4000W SCR Voltage Regulator control?\u003c\/h4\u003e\n\u003cp\u003eA: This SCR voltage regulator is compatible with a wide range of resistive and inductive loads including electric furnaces, water heaters, incandescent lamp dimmers, small AC motors, and electric irons. It is best suited for appliances operating on AC 220V with a load up to 4000W, though continuous long-term use is recommended at or below 2000W for optimal performance and longevity.\u003c\/p\u003e\n\u003ch4\u003eQ: Do I need to add extra components to use this voltage regulator?\u003c\/h4\u003e\n\u003cp\u003eA: No additional components are required. The bidirectional high-power thyristor is already built into the unit. Each set includes the SCR voltage regulator module, a switch panel, and a cable — everything you need for a straightforward installation.\u003c\/p\u003e\n\u003ch4\u003eQ: Why is there a recommended continuous wattage lower than the maximum rating?\u003c\/h4\u003e\n\u003cp\u003eA: The 4000W rating represents the maximum resistive load limit under ideal conditions. For sustained, long-duration operation at typical room temperatures, staying at or below 2000W helps prevent thermal buildup and extends the life of the controller. The integrated heat sink assists with thermal management, but reducing the continuous load adds an extra layer of protection for prolonged use.\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 types of appliances can the 4000W SCR Voltage Regulator control?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"This SCR voltage regulator is compatible with a wide range of resistive and inductive loads including electric furnaces, water heaters, incandescent lamp dimmers, small AC motors, and electric irons. 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