{"product_id":"qfb24-gte-sylvania-zinsco-3pole-125a-240v-circuit-breaker","title":"ZINSCO QFB24 GTE SYLVANIA 3POLE 125A 240V CIRCUIT BREAKER","description":"\u003ch3 data-section-id=\"17lc1ru\" data-start=\"104\" data-end=\"120\"\u003eDescription:\u003c\/h3\u003e\n\u003cp data-start=\"121\" data-end=\"736\"\u003eThe Zinsco QFB24 (commonly referenced as QFB24-125-3 or QFB243125) is a 125 Amp, 3-pole molded case circuit breaker designed for use in Zinsco \/ GTE Sylvania panelboards. It operates on 240V three-phase systems and features a thermal-magnetic (Magnatrip) trip mechanism that \u003ca href=\"https:\/\/plgautomation.com\/collections\/power-supplies-protection\"\u003eprotects circuits\u003c\/a\u003e from overloads and short circuits. It belongs to the QFB series and uses a bolt-on mounting design, providing a secure electrical connection to the panel bus. Standard specifications confirm a 125A rating, 3 poles, and 240V operation with an approximate interrupt rating of 10 kAIC. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3 data-section-id=\"5ms9th\" data-start=\"738\" data-end=\"755\"\u003eApplications:\u003c\/h3\u003e\n\u003cp data-start=\"756\" data-end=\"1139\"\u003eThe Zinsco QFB24 breaker is commonly used in commercial and industrial electrical systems requiring 125A three-phase protection, such as distribution panels, \u003ca href=\"https:\/\/plgautomation.com\/collections\/drives-motor-control\"\u003emotor control\u003c\/a\u003e centers, large machinery, and feeder circuits. It is specifically intended for legacy Zinsco bolt-on panelboards and is primarily used today for maintenance or replacement of existing installations rather than new builds.\u003c\/p\u003e\n\u003ch3 data-section-id=\"5hg6bl\" data-start=\"1141\" data-end=\"1170\"\u003eTechnical Specifications:\u003c\/h3\u003e\n\u003cp data-start=\"1171\" data-end=\"1994\"\u003e• Manufacturer: Zinsco \/ GTE Sylvania\u003cbr data-start=\"1208\" data-end=\"1211\"\u003e• Model \/ Part Number: QFB24 \/ QFB24-125-3 \/ QFB243125\u003cbr data-start=\"1265\" data-end=\"1268\"\u003e• Product Type: Molded Case Circuit Breaker (Bolt-On)\u003cbr data-start=\"1321\" data-end=\"1324\"\u003e• Poles: 3-Pole \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003cbr data-start=\"1377\" data-end=\"1380\"\u003e• Current Rating: 125 Amps \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003cbr data-start=\"1444\" data-end=\"1447\"\u003e• Voltage Rating: 240 VAC \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003cbr data-start=\"1510\" data-end=\"1513\"\u003e• Phase: 3-phase \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003cbr data-start=\"1567\" data-end=\"1570\"\u003e• Mounting: Bolt-on (QFB series) \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003cbr data-start=\"1640\" data-end=\"1643\"\u003e• Trip Type: Thermal-magnetic (Magnatrip) \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003cbr data-start=\"1722\" data-end=\"1725\"\u003e• Interrupt Rating: ~10 kAIC @ 240V \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003cbr data-start=\"1798\" data-end=\"1801\"\u003e• Terminals: Lug connections\u003cbr data-start=\"1829\" data-end=\"1832\" data-is-only-node=\"\"\u003e• Function: Overcurrent and short circuit protection\u003cbr data-start=\"1884\" data-end=\"1887\"\u003e• Status: Obsolete \/ discontinued (commonly refurbished or surplus) \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3 data-section-id=\"1cz0398\" data-start=\"2001\" data-end=\"2025\"\u003eCommon Replacements:\u003c\/h3\u003e\n\u003cp data-start=\"2026\" data-end=\"2177\"\u003e• \u003ca href=\"https:\/\/plgautomation.com\/products\/square-d-qob3125vh-u-125a-240v-3p?_pos=1\u0026amp;_psq=QOB3125\u0026amp;_ss=e\u0026amp;_v=1.0\"\u003eSquare D QOB3125 3-Pole 125A Bolt-On Circuit Breaker\u003c\/a\u003e\u003cbr data-start=\"2080\" data-end=\"2083\"\u003e• Siemens BQD3125 3-Pole 125A Bolt-On Breaker\u003cbr data-start=\"2128\" data-end=\"2131\"\u003e• Eaton BAB3125H 3-Pole 125A Bolt-On Brea\u003c\/p\u003e","brand":"Zinsco","offers":[{"title":"Used Surplus - Excellent Condition","offer_id":51734987407662,"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_bc1201c7-b70c-4e32-b7f2-d666c8b9e51c.jpg?v=1770608009","url":"https:\/\/plgautomation.com\/products\/qfb24-gte-sylvania-zinsco-3pole-125a-240v-circuit-breaker","provider":"PLG Automation ","version":"1.0","type":"link"}