{"product_id":"din-rail-adjustable-voltage-current-protective-relay-40a-63a-1","title":"40A\/63A DIN Rail Adjustable Voltage \u0026 Current Protective Relay","description":"\n\u003ch2\u003e40A\/63A DIN Rail Adjustable Voltage \u0026amp; Current Protective Relay\u003c\/h2\u003e\n\u003cp\u003eKeep your electrical circuits safe and operating within optimal parameters with this versatile DIN Rail-mounted protective relay. Featuring dual real-time displays, fully adjustable thresholds, and an embedded RTOS for high stability, this device is the smart choice for homeowners, electricians, and industrial users who demand reliable circuit monitoring and automatic protection.\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\u003eDual Display:\u003c\/strong\u003e Simultaneously monitors and shows live voltage and current readings for at-a-glance circuit oversight.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFully Adjustable Thresholds:\u003c\/strong\u003e Set your own overvoltage, undervoltage, and overcurrent limits to match your specific equipment requirements.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMulti-Mode Display:\u003c\/strong\u003e Switch between voltage, current, frequency, and active power readouts with ease.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManual \u0026amp; Automatic Recovery:\u003c\/strong\u003e Choose between manual reset after a protection event or automatic reconnection once conditions normalize.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSet Lock:\u003c\/strong\u003e Parameter lock prevents accidental changes to your configured protection settings.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEnergy-Saving Mode:\u003c\/strong\u003e Dims the display when the protector is idle to reduce power consumption.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEmbedded RTOS:\u003c\/strong\u003e Real-Time Operating System improves system performance, stability, and long-term maintainability.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDIN Rail Mount:\u003c\/strong\u003e Standard rail mounting for fast, tool-friendly installation in electrical panels and enclosures.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eProtection Functions\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eOvervoltage protection (adjustable: 130–300 V, default: 270 V)\u003c\/li\u003e\n  \u003cli\u003eUndervoltage protection (adjustable: 80–210 V, default: 170 V)\u003c\/li\u003e\n  \u003cli\u003eOvercurrent protection (40 A model: 1–40 A adjustable; 63 A model: 1–63 A adjustable)\u003c\/li\u003e\n  \u003cli\u003eContinuous overcurrent counting\u003c\/li\u003e\n  \u003cli\u003eFast protection for power-failure and abnormal supply events\u003c\/li\u003e\n  \u003cli\u003eDC mode support (current\/power display inactive in DC mode)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePower Supply\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e230 VAC, 50\/60 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMax. Load Current\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1–40 A adjustable (40 A model) \/ 1–63 A adjustable (63 A model)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOvervoltage Range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e130–300 V (default 270 V)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eUndervoltage Range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e80–210 V (default 170 V)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eEffective AC Voltage Range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eAC 80–300 V (1% calibratable)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eEffective AC Current Range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eAC 0.1–40 A \/ 0.1–63 A (1% calibratable)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eEffective DC Voltage Range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eDC 80–300 V\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFrequency Range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e40–70 Hz (1% calibratable)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eScreen Refresh Rate\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u0026gt;1000 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMeasurement Algorithm\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eTrue RMS (Root Mean Square)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eHysteresis (Return Difference)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e5 V fixed\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTimer Range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1–999 seconds\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAction Time\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0.1–10.0 seconds\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMounting\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eStandard DIN Rail\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003ePackage Contents\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e1× Over\/Under Voltage \u0026amp; Overcurrent Protective Relay Device\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eImportant Notes\u003c\/h3\u003e\n\u003cp\u003eColors may vary slightly due to screen calibration and lighting conditions. Allow 1–10 mm variance due to manual measurement. Always consult a qualified electrician for installation in mains-connected panels. For electrical safety guidelines, refer to the \u003ca href=\"https:\/\/www.osha.gov\/electrical\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eOSHA Electrical Safety standards\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: What is the difference between the 40A and 63A models of this DIN Rail protective relay?\u003c\/h4\u003e\n\u003cp\u003eA: The two models differ in their maximum rated load current. The 40A model supports adjustable overcurrent protection from 1–40 A, while the 63A model covers 1–63 A. Both share the same overvoltage, undervoltage, display, and feature set — choose based on the maximum load current of your circuit.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Can this protective relay device be used with DC circuits?\u003c\/h4\u003e\n\u003cp\u003eA: Yes. The device supports a DC effective voltage range of 80–300 V. Note that in DC mode, the current and power display readings are inactive; only voltage monitoring is available.\u003c\/p\u003e\n\n\u003ch4\u003eQ: How do I prevent accidental changes to my protection settings?\u003c\/h4\u003e\n\u003cp\u003eA: The device includes a built-in Set Lock feature. Once enabled, the lock prevents any accidental modification of your configured overvoltage, undervoltage, and overcurrent thresholds, ensuring your protection parameters remain exactly as you set them.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Does this relay support automatic recovery after a protection event?\u003c\/h4\u003e\n\u003cp\u003eA: Yes. The device offers both Manual and Automatic Recovery modes. In automatic mode, the relay reconnects once the voltage or current returns to within the safe range. In manual mode, the user must physically press the switch button to restore output after a protection event.\u003c\/p\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What is the difference between the 40A and 63A models of this DIN Rail protective relay?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The two models differ in their maximum rated load current. The 40A model supports adjustable overcurrent protection from 1–40 A, while the 63A model covers 1–63 A. Both share the same overvoltage, undervoltage, display, and feature set — choose based on the maximum load current of your circuit.\"}}, {\"@type\": \"Question\", \"name\": \"Can this protective relay device be used with DC circuits?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes. The device supports a DC effective voltage range of 80–300 V. 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In manual mode, the user must physically press the switch button to restore output after a protection event.\"}}]}\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:\/\/kujrmc-0q.myshopify.com\/\"}, {\"@type\": \"ListItem\", \"position\": 2, \"name\": \"Fasteners \u0026 Electrical\", \"item\": \"https:\/\/kujrmc-0q.myshopify.com\/collections\/fasteners-electrical\"}, {\"@type\": \"ListItem\", \"position\": 3, \"name\": \"40A\/63A DIN Rail Adjustable Voltage \u0026 Current Protective Relay\", \"item\": \"https:\/\/kujrmc-0q.myshopify.com\/products\/din-rail-adjustable-voltage-current-protective-relay-40a-63a\"}]}\u003c\/script\u003e","brand":"Vue","offers":[{"title":"63A","offer_id":48749859832000,"sku":"567:203122981","price":56.99,"currency_code":"USD","in_stock":true},{"title":"40A","offer_id":48749859864768,"sku":"567:200002043","price":56.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0772\/9338\/7968\/files\/Sf1b2f0dd3b2246ff809864671d4b0aeb3.webp?v=1786209589","url":"https:\/\/vueselect.com\/products\/din-rail-adjustable-voltage-current-protective-relay-40a-63a-1","provider":"Vue","version":"1.0","type":"link"}