{"product_id":"ac-current-sensing-switch-0-2a-30a-induction-relay-m3050","title":"AC Current Sensing Switch 0.2A–30A Induction Relay M3050","description":"\n\u003ch2\u003eM3050 AC Current Sensing Switch — Precise Monitoring \u0026amp; Automatic Control\u003c\/h2\u003e\n\u003cp\u003eUpgrade your electrical monitoring and control system with the \u003cstrong\u003eM3050 AC Current Sensing Switch\u003c\/strong\u003e. Designed for industrial and commercial applications, this compact induction relay delivers precise AC current detection (0.2A–30A) and reliable switching performance — all in a durable ABS housing.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWide Detection Range:\u003c\/strong\u003e Accurately monitors AC currents from 0.2A to 30A, making it suitable for a broad range of loads and equipment.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNon-Contact Current Measurement:\u003c\/strong\u003e Built-in mutual inductor (CT) structure clamps around the conductor — no need to break the circuit for safe, stable operation.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNO \u0026amp; NC Contact Options:\u003c\/strong\u003e Supports both Normally Open (NO) and Normally Close (NC) switching modes for flexible integration into any control logic.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHigh Sensitivity \u0026amp; Fast Response:\u003c\/strong\u003e Quickly detects changes in current status to help prevent equipment damage caused by overcurrent or load failure.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompatible Models:\u003c\/strong\u003e Available in M3050 and M3056 specifications to suit different project requirements.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEasy Wiring \u0026amp; Compact Design:\u003c\/strong\u003e Snap-on installation makes it fast to integrate into distribution boxes, control cabinets, and automation panels.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDurable Construction:\u003c\/strong\u003e ABS material body built for continuous operation in demanding environments.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eIdeal Applications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003ePump systems \u0026amp; motor protection circuits\u003c\/li\u003e\n  \u003cli\u003eHVAC equipment monitoring\u003c\/li\u003e\n  \u003cli\u003eLighting control automation\u003c\/li\u003e\n  \u003cli\u003eDistribution boxes \u0026amp; control cabinets\u003c\/li\u003e\n  \u003cli\u003eOverload protection \u0026amp; current monitoring systems\u003c\/li\u003e\n  \u003cli\u003eIndustrial \u0026amp; commercial automation projects\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eProduct Specifications\u003c\/h3\u003e\n\u003ctable style=\"width:100%; border-collapse:collapse;\"\u003e\n  \u003ctbody\u003e\n    \u003ctr style=\"background:#f5f5f5;\"\u003e\n      \u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003e\u003cstrong\u003eModel\u003c\/strong\u003e\u003c\/td\u003e\n      \u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003eM3050 \/ M3056\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003e\u003cstrong\u003eDetection Range\u003c\/strong\u003e\u003c\/td\u003e\n      \u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003e0.2A – 30A (AC)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background:#f5f5f5;\"\u003e\n      \u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003e\u003cstrong\u003eContact Type\u003c\/strong\u003e\u003c\/td\u003e\n      \u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003eNormally Open (NO) \/ Normally Closed (NC)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003e\u003cstrong\u003eMeasurement Method\u003c\/strong\u003e\u003c\/td\u003e\n      \u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003eNon-contact (Built-in Mutual Inductor)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background:#f5f5f5;\"\u003e\n      \u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003e\u003cstrong\u003eMaterial\u003c\/strong\u003e\u003c\/td\u003e\n      \u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003eABS\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003e\u003cstrong\u003eCountry of Origin\u003c\/strong\u003e\u003c\/td\u003e\n      \u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003eMade in China\u003c\/td\u003e\n    \u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003ePackage Contents\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e1× AC Current Sensing Switch (M3050 or M3056)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cem\u003eNote: Only the above package content is included. Other products shown in lifestyle images are not included. Colors may vary slightly due to lighting and display settings. 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\/10pcs-wooden-handle-nylon-bristle-paint-brush-for-oil-painting-dusting-and-cleaning-unrechargeable-hand-tool-set-without-batt-2\"\u003e10Pcs Wooden Handle Nylon Bristle Paint Brush – Hand Tool Set\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/1pc-precision-japanese-double-edged-hand-saw-sk5-steel-fine-toothed-for-carpentry-and-gardening-6-inch-blade-portable-mini-1\"\u003e1pc Precision Japanese Double-Edged Hand Saw – SK5 Steel\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/1pc-professional-heavy-duty-pruning-shears-with-anti-slip-handle-design-suitable-for-trimming-thick-and-sturdy-branches\"\u003e1pc Professional Heavy-Duty Pruning Shears with Anti-Slip Handle\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eLearn more: \u003ca href=\"https:\/\/www.osha.gov\/eye-face-protection\" target=\"_blank\" rel=\"noopener\"\u003eOSHA on eye and face protection\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: What is an AC current sensing switch and how does the M3050 work?\u003c\/h4\u003e\n\u003cp\u003eA: An AC current sensing switch is a relay-based device that monitors the flow of alternating current through a wire and automatically triggers a switching action (NO or NC) when the current exceeds or falls below a set threshold. The M3050 uses a built-in mutual inductor (current transformer) that clamps around a conductor — no circuit interruption required — making it a safe, non-contact solution for current monitoring and automatic control.\u003c\/p\u003e\n\u003ch4\u003eQ: What is the detection range of this current sensing switch?\u003c\/h4\u003e\n\u003cp\u003eA: The M3050 AC current sensing switch has a detection range of 0.2A to 30A, covering most common single-phase and control circuit loads used in industrial, commercial, and automation applications.\u003c\/p\u003e\n\u003ch4\u003eQ: Can this induction relay be used with both NO and NC circuits?\u003c\/h4\u003e\n\u003cp\u003eA: Yes. The M3050 supports both Normally Open (NO) and Normally Closed (NC) contact configurations, giving you the flexibility to integrate it into a wide variety of automation, protection, and monitoring control logic schemes.\u003c\/p\u003e\n\u003ch4\u003eQ: What types of equipment is this current sensing switch compatible with?\u003c\/h4\u003e\n\u003cp\u003eA: The M3050 is well-suited for use with pump systems, motor protection circuits, HVAC equipment, lighting control panels, distribution boxes, and general industrial automation setups where real-time current status feedback is needed.\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 an AC current sensing switch and how does the M3050 work?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"An AC current sensing switch is a relay-based device that monitors the flow of alternating current through a wire and automatically triggers a switching action (NO or NC) when the current exceeds or falls below a set threshold. The M3050 uses a built-in mutual inductor (current transformer) that clamps around a conductor — no circuit interruption required — making it a safe, non-contact solution for current monitoring and automatic control.\"}}, {\"@type\": \"Question\", \"name\": \"What is the detection range of this current sensing switch?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The M3050 AC current sensing switch has a detection range of 0.2A to 30A, covering most common single-phase and control circuit loads used in industrial, commercial, and automation applications.\"}}, {\"@type\": \"Question\", \"name\": \"Can this induction relay be used with both NO and NC circuits?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes. 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