{"product_id":"zinsco-qb24-3100-u-100a-240v-2p","title":"ZINSCO QB24-3100 U 100A 240V 2-pole Molded Case Circuit Breaker QB243100","description":"\u003ch3 data-end=\"126\" data-start=\"110\" data-section-id=\"17lc1ru\"\u003eDescription:\u003c\/h3\u003e\n\u003cp data-end=\"512\" data-start=\"127\"\u003eThe Zinsco QB24-3100 U is a 100 Amp, 2-pole molded case circuit breaker designed for use in Zinsco \/ GTE Sylvania panelboards. It operates on 240V systems and features a thermal-magnetic trip mechanism to \u003ca href=\"https:\/\/plgautomation.com\/collections\/power-supplies-protection\"\u003eprovide protection against overloads and short circuits\u003c\/a\u003e. This breaker belongs to the QB24 (QB series) and uses a bolt-on mounting design for a secure connection to the panel bus. While exact suffix variations exist, comparable models in the same QB24 family (e.g., QB243100) are rated at 100A, 240V with bolt-on mounting and standard interrupt capacity around 10 kAIC, and are now discontinued. \u003cspan data-state=\"closed\" class=\"\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3 data-end=\"788\" data-start=\"771\" data-section-id=\"5ms9th\"\u003eApplications:\u003c\/h3\u003e\n\u003cp data-end=\"1162\" data-start=\"789\"\u003eThe Zinsco QB24-3100 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 installed in Zinsco bolt-on panelboards typically found in older installations and is primarily used today for maintenance or replacement of existing systems.\u003c\/p\u003e\n\u003ch3 data-end=\"1193\" data-start=\"1164\" data-section-id=\"5hg6bl\"\u003eTechnical Specifications:\u003c\/h3\u003e\n\u003cp data-end=\"1752\" data-start=\"1194\"\u003e• Manufacturer: Zinsco \/ GTE Sylvania \/ Challenger\u003cbr data-end=\"1247\" data-start=\"1244\"\u003e• Model \/ Part Number: QB24-3100 U (QB24 series)\u003cbr data-end=\"1298\" data-start=\"1295\"\u003e• Product Type: Molded Case Circuit Breaker (Bolt-On)\u003cbr data-end=\"1354\" data-start=\"1351\"\u003e• Poles: 2-Pole\u003cbr data-end=\"1372\" data-start=\"1369\"\u003e• Current Rating: 100 Amps\u003cbr data-end=\"1401\" data-start=\"1398\"\u003e• Voltage Rating: 240 VAC\u003cbr data-end=\"1429\" data-start=\"1426\"\u003e• Mounting: Bolt-on (QB series)\u003cbr data-end=\"1463\" data-start=\"1460\"\u003e• Trip Type: Thermal-magnetic (LI – long-time \u0026amp; instantaneous)\u003cbr data-end=\"1528\" data-start=\"1525\"\u003e• Interrupt Rating: ~10 kAIC @ 240V (typical QB series) \u003cspan data-state=\"closed\" class=\"\"\u003e\u003c\/span\u003e\u003cbr data-end=\"1624\" data-start=\"1621\"\u003e• Function: Overcurrent and short circuit protection\u003cbr data-end=\"1679\" data-start=\"1676\"\u003e• Status: Obsolete \/ discontinued \u003cspan data-state=\"closed\" class=\"\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3 data-end=\"1783\" data-start=\"1759\" data-section-id=\"1cz0398\"\u003eCommon Replacements:\u003c\/h3\u003e\n\u003cp data-end=\"1935\" data-start=\"1784\"\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-end=\"1841\" data-start=\"1838\"\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-end=\"1889\" data-start=\"1886\"\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":51734993731886,"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_25e17b6e-2da8-4a28-88ed-f735415860c2.jpg?v=1770608031","url":"https:\/\/plgautomation.com\/products\/zinsco-qb24-3100-u-100a-240v-2p","provider":"PLG Automation ","version":"1.0","type":"link"}