{"product_id":"ut281f","title":"UT281F True RMS Flex Clamp Sensor","description":"\u003ch1\u003eUNI-T UT281F Flexible AC Power Clamp Meter\u003c\/h1\u003e\n\n\u003cdiv class=\"product-container\"\u003e\n\u003ch2\u003eOverview\u003c\/h2\u003e\n\u003cp\u003eThe UT281F pairs a flexible 1100 mm coil with power measurement: it reads AC current up to 10 kA on large or awkward conductors and, beyond current, measures active, apparent, and reactive power with power factor and phase angle — so you can assess load behaviour on a big feeder, not just its current. It's rated CAT III 1000 V \/ CAT IV 600 V.\u003c\/p\u003e\n\u003cp\u003eTrue-RMS sensing, a dual display, Bluetooth 5.0 for transfer, and storage for 1050 result sets make it a documentation-ready tool for utility and industrial power work. It's backed by UNI-T's nearly 40 years of test-meter manufacturing.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"product-container\"\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eFlexible 1100 mm coil for large and awkward conductors\u003c\/li\u003e\n\u003cli\u003eAC current up to 10 kA (45 Hz–1000 Hz)\u003c\/li\u003e\n\u003cli\u003ePower measurement: active, apparent, reactive, with power factor and phase angle\u003c\/li\u003e\n\u003cli\u003eTrue-RMS measurement; dual display\u003c\/li\u003e\n\u003cli\u003eAC\/DC voltage to 1000 V; resistance to 60 MΩ; continuity\u003c\/li\u003e\n\u003cli\u003eBluetooth 5.0 for data transfer; 1050-set storage\u003c\/li\u003e\n\u003cli\u003eCAT III 1000 V \/ CAT IV 600 V; AA battery power\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"product-container\"\u003e\n\u003ch2\u003eUT281F Details\u003c\/h2\u003e\n\u003ch3\u003eFlexible-Coil High-Current Measurement\u003c\/h3\u003e\n\u003cp\u003eThe 1100 mm flexible coil wraps around busbars, cable bundles, and large conductors a rigid clamp can't reach, measuring AC current up to 10 kA across a 45 Hz–1000 Hz band.\u003c\/p\u003e\n\u003ch3\u003ePower, Not Just Current\u003c\/h3\u003e\n\u003cp\u003eBeyond current, the UT281F measures active, apparent, and reactive power with power factor and phase angle — so you can see how a feeder is actually loaded and where reactive power and poor power factor are costing capacity.\u003c\/p\u003e\n\u003ch3\u003eDocumentation-Ready\u003c\/h3\u003e\n\u003cp\u003eTrue-RMS sensing on a dual display, Bluetooth 5.0 transfer, and storage for 1050 result sets make it straightforward to capture and move power readings for reports and load studies.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"product-container\"\u003e\n\u003ch2\u003eCompare the UT281 Series\u003c\/h2\u003e\n\u003ctable class=\"product-spec-table\"\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003cth\u003e\u003ca href=\"\/products\/ut281eplus\"\u003eUT281E+\u003c\/a\u003e\u003c\/th\u003e\n\u003cth\u003eUT281F\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMax AC current\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e9.99 kA\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e10 kA\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInrush current\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e—\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePower measurement\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e—\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eActive \/ apparent \/ reactive, PF, phase\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eConnectivity\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e—\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eBluetooth 5.0\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eData storage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e999 sets\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e1050 sets\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eJaw opening\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1000 mm\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e1100 mm\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"product-container\"\u003e\n\u003ch2\u003eApplications\u003c\/h2\u003e\n\u003cp\u003eFeeder and busbar power studies; load and power-factor assessment on large industrial and utility circuits; high-current measurement on conductors a clamp can't reach; and maintenance work that needs power figures documented.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"product-container\"\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cdiv class=\"product-faq-item\"\u003e\n\u003ch3\u003eWhat does the UT281F measure beyond current?\u003c\/h3\u003e\n\u003cp\u003eActive, apparent, and reactive power, with power factor and phase angle.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"product-faq-item\"\u003e\n\u003ch3\u003eHow large a conductor can it measure?\u003c\/h3\u003e\n\u003cp\u003eIts 1100 mm flexible coil wraps around large busbars and cable bundles; AC current measures up to 10 kA.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"product-faq-item\"\u003e\n\u003ch3\u003eHow is it different from the UT281E+?\u003c\/h3\u003e\n\u003cp\u003eThe UT281E+ measures current with inrush capture; the UT281F adds full power measurement and Bluetooth 5.0 transfer.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"UNI-T","offers":[{"title":"Default Title","offer_id":53875514179868,"sku":"180200100739X","price":275.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0822\/9208\/0924\/files\/UT281F-1_sq.jpg?v=1771949780","url":"https:\/\/uni-trendus.com\/products\/ut281f","provider":"Uni-Trend US","version":"1.0","type":"link"}