{"product_id":"time-mark-corporation-a258b-480vac-3ph-power-monitor","title":"Time Mark Corporation A258B-480VAC-3PH Power Monitor","description":"\u003ch3 data-section-id=\"17lc1ru\" data-start=\"0\" data-end=\"16\" class=\"PDq2pG_selectionAnchorContainer\"\u003eDescription:\u003cspan aria-hidden=\"true\" class=\"PDq2pG_selectionAnchor\"\u003e\u003c\/span\u003e\n\u003c\/h3\u003e\n\u003cp data-start=\"17\" data-end=\"688\"\u003eThe Time Mark Corporation A258B-480VAC \u003ca href=\"https:\/\/plgautomation.com\/collections\/safety-components\"\u003e3-Phase Power Monitor\u003c\/a\u003e is designed to continuously monitor 480 VAC three-phase power systems for phase loss, phase reversal, and undervoltage conditions, protecting motors and industrial equipment from abnormal power conditions. Commonly installed in motor control centers, HVAC systems, compressors, pumps, conveyors, and manufacturing equipment where reliable three-phase power monitoring is critical. Maintenance teams, OEMs, and system integrators use the A258B-480VAC for replacement, repair, retrofit, and preventive maintenance to improve equipment reliability and reduce costly downtime. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3 data-section-id=\"5ms9th\" data-start=\"690\" data-end=\"707\"\u003eApplications:\u003c\/h3\u003e\n\u003cp data-start=\"708\" data-end=\"1311\"\u003eThe Time Mark A258B-480VAC is a solid-state three-phase monitoring relay that continuously supervises Wye or Delta power systems without requiring a neutral connection and automatically de-energizes its output relay whenever phase loss, phase reversal, or undervoltage conditions are detected. It is widely used in industrial automation systems, motor control panels, water and wastewater facilities, HVAC equipment, compressors, conveyors, and process machinery where dependable three-phase power monitoring helps prevent motor damage and production interruptions. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3 data-section-id=\"5hg6bl\" data-start=\"1313\" data-end=\"1342\"\u003eTechnical Specifications:\u003c\/h3\u003e\n\u003cp data-start=\"1343\" data-end=\"2252\"\u003e• Manufacturer: Time Mark Corporation\u003cbr data-start=\"1380\" data-end=\"1383\"\u003e• Manufacturer Part Number (MPN): A258B-480VAC\u003cbr data-start=\"1429\" data-end=\"1432\"\u003e• Product Type: 3-Phase Power Monitor Relay\u003cbr data-start=\"1475\" data-end=\"1478\"\u003e• Series: 258 Series\u003cbr data-start=\"1498\" data-end=\"1501\"\u003e• Nominal Voltage: 480 VAC (Phase-to-Phase)\u003cbr data-start=\"1544\" data-end=\"1547\"\u003e• Voltage Adjustment Range: 380–480 VAC\u003cbr data-start=\"1586\" data-end=\"1589\"\u003e• Frequency: 60 Hz (400 Hz model available)\u003cbr data-start=\"1632\" data-end=\"1635\"\u003e• Monitoring Functions: Phase Loss, Phase Reversal, Undervoltage Protection\u003cbr data-start=\"1710\" data-end=\"1713\" data-is-only-node=\"\"\u003e• Output Contacts: SPDT, 10 A at 240 VAC Resistive\u003cbr data-start=\"1763\" data-end=\"1766\"\u003e• Power Consumption: 3.7 W\u003cbr data-start=\"1792\" data-end=\"1795\"\u003e• Response Time: 50 ms\u003cbr data-start=\"1817\" data-end=\"1820\"\u003e• Reset: Automatic\u003cbr data-start=\"1838\" data-end=\"1841\"\u003e• Mounting: 8-Pin Plug-In Socket\u003cbr data-start=\"1873\" data-end=\"1876\"\u003e• Visual Indicators: TRIP and NORM LEDs\u003cbr data-start=\"1915\" data-end=\"1918\"\u003e• Wye\/Delta Compatible: Yes (No Neutral Required)\u003cbr data-start=\"1967\" data-end=\"1970\"\u003e• Certifications: UL Recognized, CSA Certified\u003cbr data-start=\"2016\" data-end=\"2019\"\u003e• Operating Temperature: -40°F to +131°F (-40°C to +55°C)\u003cbr data-start=\"2076\" data-end=\"2079\"\u003e• Application: Three-phase motor protection, industrial automation, HVAC systems, pumps, compressors, conveyors, and process equipment. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3 data-section-id=\"1cz0398\" data-start=\"2254\" data-end=\"2278\"\u003eCommon Replacements:\u003c\/h3\u003e\n\u003cp data-start=\"2279\" data-end=\"2350\"\u003e• Time Mark A258BM-480VAC\u003cbr data-start=\"2304\" data-end=\"2307\"\u003e• Time Mark B258B-480VAC\u003cbr data-start=\"2331\" data-end=\"2334\"\u003e• Time Mark A263\u003c\/p\u003e","brand":"TIME","offers":[{"title":"New","offer_id":51714028044590,"sku":null,"price":0.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0940\/0818\/1038\/files\/Ebay_website_image_19cabec8-33c3-441b-8cdd-c3001508cb7c.jpg?v=1770414229","url":"https:\/\/plgautomation.com\/products\/time-mark-corporation-a258b-480vac-3ph-power-monitor","provider":"PLG Automation ","version":"1.0","type":"link"}