{"product_id":"zinsco-qb24-2100-u-100a-2p-240v","title":"ZINSCO QB24-2100 U 100A 240V 2-pole Molded Case Circuit Breaker QB242100","description":"\u003ch3 data-section-id=\"17lc1ru\" data-start=\"110\" data-end=\"126\"\u003eDescription:\u003c\/h3\u003e\n\u003cp data-start=\"127\" data-end=\"660\"\u003eThe Zinsco QB24-2100 U is a 100 Amp, 2-pole molded case circuit breaker designed for use in Zinsco \/ GTE Sylvania panelboards. It operates at 240V and features a thermal-magnetic trip mechanism that \u003ca href=\"https:\/\/plgautomation.com\/collections\/power-supplies-protection\"\u003eprotects circuits\u003c\/a\u003e from overloads and short circuits. This breaker belongs to the QB series and uses a bolt-on mounting design, providing a secure connection to the panel bus. It is equivalent to models such as QB2100 and is considered a standard high-capacity breaker for legacy Zinsco systems. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3 data-section-id=\"5ms9th\" data-start=\"662\" data-end=\"679\"\u003eApplications:\u003c\/h3\u003e\n\u003cp data-start=\"680\" data-end=\"1093\"\u003eThe Zinsco QB24-2100 breaker is commonly used in residential and commercial electrical systems as a main or feeder breaker for subpanels, HVAC systems, large appliances, and distribution circuits requiring 100A protection. It is typically installed in older Zinsco bolt-on panels and is now primarily used for maintenance or replacement of existing equipment rather than new installations. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3 data-section-id=\"5hg6bl\" data-start=\"1095\" data-end=\"1124\"\u003eTechnical Specifications:\u003c\/h3\u003e\n\u003cp data-start=\"1125\" data-end=\"1899\"\u003e• Manufacturer: Zinsco \/ GTE Sylvania\u003cbr data-start=\"1162\" data-end=\"1165\"\u003e• Model \/ Part Number: QB24-2100 U \/ QB2100\u003cbr data-start=\"1208\" data-end=\"1211\"\u003e• Product Type: Molded Case Circuit Breaker (Bolt-On)\u003cbr data-start=\"1264\" data-end=\"1267\"\u003e• Poles: 2-Pole \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003cbr data-start=\"1320\" data-end=\"1323\"\u003e• Current Rating: 100 Amps \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003cbr data-start=\"1387\" data-end=\"1390\"\u003e• Voltage Rating: 240 VAC \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003cbr data-start=\"1453\" data-end=\"1456\"\u003e• Phase: Single-phase \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003cbr data-start=\"1515\" data-end=\"1518\"\u003e• Interrupt Rating: ~10 kAIC @ 240V \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003cbr data-start=\"1591\" data-end=\"1594\"\u003e• Mounting: Bolt-on (QB series) \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003cbr data-start=\"1663\" data-end=\"1666\"\u003e• Trip Type: Thermal-magnetic (LI – long-time \u0026amp; instantaneous) \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003cbr data-start=\"1766\" data-end=\"1769\"\u003e• Function: Overcurrent and short circuit protection\u003cbr data-start=\"1821\" data-end=\"1824\"\u003e• Status: Obsolete \/ discontinued \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3 data-section-id=\"1cz0398\" data-start=\"1906\" data-end=\"1930\"\u003eCommon Replacements:\u003c\/h3\u003e\n\u003cp data-start=\"1931\" data-end=\"2082\"\u003e• \u003ca href=\"https:\/\/plgautomation.com\/products\/square-d-qob2100-bolt-on-circuit-breaker-100a-2p-120-240v-schneider-electric?_pos=2\u0026amp;_psq=QOB2100\u0026amp;_ss=e\u0026amp;_v=1.0\"\u003eSquare D QOB2100 2-Pole 100A Bolt-On Circuit Breaker\u003c\/a\u003e\u003cbr data-start=\"1985\" data-end=\"1988\"\u003e• \u003ca href=\"https:\/\/plgautomation.com\/products\/siemens-bqd2100-u-100a-480v-2p?_pos=1\u0026amp;_psq=BQD2100\u0026amp;_ss=e\u0026amp;_v=1.0\"\u003eSiemens BQD2100 2-Pole 100A Bolt-On Breaker\u003c\/a\u003e\u003cbr data-start=\"2033\" data-end=\"2036\"\u003e• \u003ca href=\"https:\/\/plgautomation.com\/products\/eaton-cutler-hammer-bab-bab2100h-2-pole-100-amp-240v-circuit-breaker-bab2100?_pos=1\u0026amp;_psq=BAB2100H\u0026amp;_ss=e\u0026amp;_v=1.0\"\u003eEaton BAB2100H 2-Pole 100A Bolt-On Breaker\u003c\/a\u003e\u003c\/p\u003e","brand":"ZINSCO","offers":[{"title":"Used Surplus - Excellent Condition","offer_id":51734995796270,"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_4057aa9d-24d3-47d0-bc66-0c4de48267ed.jpg?v=1770608039","url":"https:\/\/plgautomation.com\/products\/zinsco-qb24-2100-u-100a-2p-240v","provider":"PLG Automation ","version":"1.0","type":"link"}