{"product_id":"svp-912m-40a-voltage-protector-over-under-voltage-guard","title":"SVP-912M 40A Voltage Protector – Over \u0026 Under Voltage Guard","description":"\n\u003ch2\u003eSVP-912M 40A Adjustable Voltage Protector with Manual Switch\u003c\/h2\u003e\n\u003cp\u003eKeep your home appliances and electrical equipment safe from damaging voltage fluctuations with the \u003cstrong\u003eSVP-912M Intelligent Voltage Protector\u003c\/strong\u003e. This compact, DIN-rail-mounted device automatically monitors your AC230V line and disconnects the circuit whenever voltage rises above or drops below your custom-set thresholds — then reconnects automatically once a stable voltage is detected. A built-in manual override switch gives you full control at any time.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWide adjustable overvoltage threshold:\u003c\/strong\u003e Set between 230V–300V (factory default: 280V) to match your protection needs\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWide adjustable undervoltage threshold:\u003c\/strong\u003e Set between 140V–210V (factory default: 160V)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSelf-resetting operation:\u003c\/strong\u003e Automatically reconnects power after a configurable recovery delay of 1–600 seconds (default: 5s)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHigh 40A current rating:\u003c\/strong\u003e Suitable for whole-home or heavy-load circuit protection\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompatible with 50\/60Hz systems:\u003c\/strong\u003e Works across a broad range of international electrical grids\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e35mm DIN rail installation:\u003c\/strong\u003e Fast, tool-friendly mounting in standard electrical enclosures\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUltra-low standby power consumption:\u003c\/strong\u003e ≤2W — always on guard without wasting energy\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManual override switch:\u003c\/strong\u003e Instantly cut or restore power at any time without adjusting settings\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompact \"mini\" form factor:\u003c\/strong\u003e Saves panel space while delivering robust protection\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable style=\"width:100%; border-collapse:collapse;\"\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;\"\u003eSVP-912M\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003e\u003cstrong\u003eWorking Voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003e230V AC, 50\/60Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr style=\"background:#f5f5f5;\"\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003e\u003cstrong\u003eCurrent Rating\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003e40A\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003e\u003cstrong\u003eOvervoltage Protection Range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003e230V–300V (Default: 280V)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr style=\"background:#f5f5f5;\"\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003e\u003cstrong\u003eUndervoltage Protection Range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003e140V–210V (Default: 160V)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003e\u003cstrong\u003eRecovery Time\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003e1s–600s (Default: 5s)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr style=\"background:#f5f5f5;\"\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003e\u003cstrong\u003eStandby Consumption\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003e≤2W\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003e\u003cstrong\u003eInstallation\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003e35mm DIN Rail\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr style=\"background:#f5f5f5;\"\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\/table\u003e\n\n\u003ch3\u003eWhat's in the Box\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e1× SVP-912M Over\/Under Voltage Protector\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003ePlease Note:\u003c\/strong\u003e Due to lighting and display differences, the actual product color may vary slightly from images. Please allow 1–3cm tolerance due to manual measurement.\u003c\/p\u003e\n\n\u003cp\u003eFor more information on electrical safety standards and best practices for home wiring protection, visit the U.S. Consumer Product Safety Commission – Electrical Safety.\u003c\/p\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: What does the SVP-912M voltage protector do for my appliances?\u003c\/h4\u003e\n\u003cp\u003eA: The SVP-912M continuously monitors your AC230V line. If the voltage exceeds your set overvoltage threshold or drops below your undervoltage threshold, it instantly disconnects the circuit to protect connected appliances. Once voltage stabilizes, it automatically reconnects after your chosen recovery delay (1–600 seconds), so your devices are guarded without requiring manual intervention.\u003c\/p\u003e\n\n\u003ch4\u003eQ: How do I adjust the overvoltage and undervoltage thresholds?\u003c\/h4\u003e\n\u003cp\u003eA: The SVP-912M features onboard adjustment controls that let you set the overvoltage cutoff anywhere between 230V and 300V, and the undervoltage cutoff between 140V and 210V. The unit ships with factory defaults of 280V (over) and 160V (under), which suit most standard residential installations. Refer to the included instructions for step-by-step adjustment guidance.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Is the SVP-912M suitable for whole-home protection?\u003c\/h4\u003e\n\u003cp\u003eA: Yes. With a 40A current rating and 35mm DIN rail mounting, the SVP-912M is designed to be installed in a main distribution board or consumer unit, making it ideal for protecting an entire home or office circuit rather than just individual devices.\u003c\/p\u003e\n\n\u003ch4\u003eQ: What does the manual switch do?\u003c\/h4\u003e\n\u003cp\u003eA: The integrated manual switch allows you to disconnect or reconnect the load circuit instantly, independent of the automatic voltage-sensing function. This is useful during maintenance, testing, or any situation where you need immediate manual control over your circuit.\u003c\/p\u003e\n\n\u003ch4\u003eQ: What recovery time setting should I use?\u003c\/h4\u003e\n\u003cp\u003eA: The default recovery time of 5 seconds works well for most applications. However, if your circuit powers sensitive equipment such as refrigerators or air conditioners — which benefit from a longer delay before restart — you can extend the recovery time up to 600 seconds to allow compressors and motors to fully equalize before power is restored.\u003c\/p\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What does the SVP-912M voltage protector do for my appliances?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The SVP-912M continuously monitors your AC230V line. If the voltage exceeds your set overvoltage threshold or drops below your undervoltage threshold, it instantly disconnects the circuit to protect connected appliances. 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