{"product_id":"major-tech-rcd-elcb-loop-polarity-tester-mt312","title":"Major Tech RCD\/ELCB, Loop \u0026 Polarity Tester – MT312","description":"\u003cp\u003eStreamline safety verification and electrical installation testing with the Major Tech RCD\/ELCB, Loop \u0026amp; Polarity Tester (MT312). Designed for electricians, electrical inspectors, and maintenance technicians, this compact, handheld instrument performs reliable ELCB\/RCD trip testing, loop impedance verification, and polarity checks on 3-wire AC circuits. Featuring clear LCD voltage readouts, Non-Contact Voltage (NCV) detection, and color-coded LED wiring status indicators, it ensures quick and accurate safety compliance checks.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eKey Features:\u003c\/b\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003e3-in-1 Electrical Testing:\u003c\/b\u003e Performs ELCB\/RCD trip testing, loop impedance measurement, and wiring polarity verification.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eDual Voltage Display:\u003c\/b\u003e Simultaneously displays Live-Neutral (L-N) and Neutral-Earth (N-E) voltages directly on the clear LCD screen.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eVisual LED Status Indicators:\u003c\/b\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eGreen (Good):\u003c\/b\u003e Resistance \u003cspan class=\"math-inline\"\u003e\u0026lt; 1.8\\Omega\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eOrange (Check):\u003c\/b\u003e Resistance between \u003cspan class=\"math-inline\"\u003e1.8\\Omega\u003c\/span\u003e and \u003cspan class=\"math-inline\"\u003e92\\Omega\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eRed (Urgent Check):\u003c\/b\u003e Resistance \u003cspan class=\"math-inline\"\u003e\u0026gt; 92\\Omega\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eNon-Contact Voltage Detection:\u003c\/b\u003e Built-in NCV function allows safe detection of live AC voltages without direct circuit contact.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003ePrecision Trip Testing:\u003c\/b\u003e Measures fault trip times up to 99.9ms max, featuring a 10-second buzzer alert upon ELCB trip.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eVersatile Lead Options:\u003c\/b\u003e Accommodates interchangeable leads for testing directly at wall sockets or at distribution boards (MT350L optional DB lead available separately).\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cb\u003eDetailed Description:\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003eThe Major Tech MT312 provides quick and effective testing for standard 3-wire AC circuits in residential, commercial, and industrial installations. Its automatic loop impedance testing evaluates wiring integrity and earthing safety, displaying immediate visual feedback via color-coded LEDs.\u003c\/p\u003e\n\u003cp\u003eEquipped with an intuitive keypad, backlit screen, and durable rubber holster, the MT312 allows technicians to perform rapid fault identification both at wall outlets and distribution boards.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eTechnical Specifications\u003c\/b\u003e\u003c\/p\u003e\n\u003ctable style=\"width: 100.071%; height: 294px;\"\u003e\n\u003cthead\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003ctd style=\"width: 25.0177%; height: 19.6px;\"\u003e\u003cstrong\u003eFeature \/ Attribute\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.5088%; height: 19.6px;\"\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003ctd style=\"width: 25.0177%; height: 19.6px;\"\u003e\u003cspan\u003e\u003cb\u003eBrand\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.5088%; height: 19.6px;\"\u003e\u003cspan\u003eMajor Tech\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003ctd style=\"width: 25.0177%; height: 19.6px;\"\u003e\u003cspan\u003e\u003cb\u003eModel \/ SKU\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.5088%; height: 19.6px;\"\u003e\u003cspan\u003eMT312\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003ctd style=\"width: 25.0177%; height: 19.6px;\"\u003e\u003cspan\u003e\u003cb\u003eProduct Type\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.5088%; height: 19.6px;\"\u003e\u003cspan\u003eRCD\/ELCB, Loop \u0026amp; Polarity Tester\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003ctd style=\"width: 25.0177%; height: 19.6px;\"\u003e\u003cspan\u003e\u003cb\u003eCircuit Compatibility\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.5088%; height: 19.6px;\"\u003e\u003cspan\u003e3-Wire AC Circuits\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.2px;\"\u003e\n\u003ctd style=\"width: 25.0177%; height: 39.2px;\"\u003e\u003cspan\u003e\u003cb\u003eVoltage Measurements\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.5088%; height: 39.2px;\"\u003e\u003cspan\u003eLive-Neutral (L-N) and Neutral-Earth (N-E)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003ctd style=\"width: 25.0177%; height: 19.6px;\"\u003e\u003cspan\u003e\u003cb\u003eMax Fault Trip Time\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.5088%; height: 19.6px;\"\u003e\u003cspan\u003e99.9ms (with 10s trip alert buzzer)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003ctd style=\"width: 25.0177%; height: 19.6px;\"\u003e\u003cspan\u003e\u003cb\u003eDisplay\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.5088%; height: 19.6px;\"\u003e\u003cspan\u003eClear LCD \u0026amp; LED Status Indicators\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.2px;\"\u003e\n\u003ctd style=\"width: 25.0177%; height: 39.2px;\"\u003e\u003cspan\u003e\u003cb\u003eWiring Indicators\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.5088%; height: 39.2px;\"\u003e\u003cspan\u003eGreen (\u003cspan class=\"math-inline\"\u003e\u0026lt; 1.8\\Omega\u003c\/span\u003e), Orange (\u003cspan class=\"math-inline\"\u003e1.8\\Omega - 92\\Omega\u003c\/span\u003e), Red (\u003cspan class=\"math-inline\"\u003e\u0026gt; 92\\Omega\u003c\/span\u003e)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003ctd style=\"width: 25.0177%; height: 19.6px;\"\u003e\u003cspan\u003e\u003cb\u003eSpecial Functions\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.5088%; height: 19.6px;\"\u003e\u003cspan\u003eNon-Contact Voltage (NCV), Automatic Loop Impedance Testing\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003ctd style=\"width: 25.0177%; height: 19.6px;\"\u003e\u003cspan\u003e\u003cb\u003eLead Connections\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.5088%; height: 19.6px;\"\u003e\u003cspan\u003eInterchangeable (Socket and DB leads optional)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.2px;\"\u003e\n\u003ctd style=\"width: 25.0177%; height: 39.2px;\"\u003e\u003cspan\u003e\u003cb\u003eTarget Applications\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.5088%; height: 39.2px;\"\u003e\u003cspan\u003eSocket Safety Testing, Distribution Board Audits, Electrical Certification\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cblockquote\u003e\n\u003cp\u003e\u003cb\u003eNote:\u003c\/b\u003e FREE Delivery does not apply, please make arrangements prior to collecting in store.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eShipping:\u003c\/b\u003e Allow For 1 - 3 Business Days Before Shipping.\u003c\/p\u003e\n\u003c\/blockquote\u003e","brand":"Major Tech","offers":[{"title":"Default Title","offer_id":47049689596076,"sku":"MT312","price":1400.0,"currency_code":"ZAR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0341\/9383\/4029\/files\/MT312web.jpg?v=1787661053","url":"https:\/\/www.electricwholesalers.co.za\/products\/major-tech-rcd-elcb-loop-polarity-tester-mt312","provider":"Electric Wholesalers","version":"1.0","type":"link"}