{"product_id":"siemens-q345h-circuit-breaker-qph-series-45a-3-pole-240vac-plug-on-thermal-magnetic-22kaic","title":"Siemens Q345H Circuit Breaker – QPH Series – 45A – 3 Pole – 240VAC – Plug-On – Thermal Magnetic – 22kAIC","description":"\u003cp data-start=\"126\" data-end=\"563\"\u003eThe Siemens Q345H is a QPH Series miniature molded case circuit breaker designed for residential, commercial, and light industrial electrical distribution applications. Rated at 45A and 240VAC, this 3-pole breaker provides reliable thermal-magnetic protection against overloads and short circuits while offering a high interrupting capacity of 22kA at 240VAC for installations with elevated fault current requirements.\u003c\/p\u003e\n\u003cp data-start=\"565\" data-end=\"983\"\u003eIts plug-on design allows quick installation into compatible Siemens EQ, PL, ES, and Ultimate load centers. The Q345H also serves as a direct replacement for legacy Murray MP345 circuit breakers, making it an ideal upgrade solution for existing electrical systems. Featuring a common-trip mechanism and HACR certification, it is well-suited for protecting HVAC equipment, motors, and three-phase distribution circuits.\u003c\/p\u003e\n\u003ch3 data-section-id=\"1yl5694\" data-start=\"985\" data-end=\"1003\"\u003eSpecifications\u003c\/h3\u003e\n\u003cul data-start=\"1005\" data-end=\"1372\"\u003e\n\u003cli data-section-id=\"abfwkk\" data-start=\"1005\" data-end=\"1023\"\u003eBrand: Siemens\u003c\/li\u003e\n\u003cli data-section-id=\"yrt7xm\" data-start=\"1024\" data-end=\"1046\"\u003ePart Number: Q345H\u003c\/li\u003e\n\u003cli data-section-id=\"xydq70\" data-start=\"1047\" data-end=\"1069\"\u003eSeries: QPH Series\u003c\/li\u003e\n\u003cli data-section-id=\"1an4n9x\" data-start=\"1070\" data-end=\"1121\"\u003eCategory: Miniature Molded Case Circuit Breaker\u003c\/li\u003e\n\u003cli data-section-id=\"kzuk02\" data-start=\"1122\" data-end=\"1148\"\u003eMounting Type: Plug-On\u003c\/li\u003e\n\u003cli data-section-id=\"1ivewjk\" data-start=\"1149\" data-end=\"1174\"\u003eConfiguration: 3 Pole\u003c\/li\u003e\n\u003cli data-section-id=\"pvjmxy\" data-start=\"1175\" data-end=\"1193\"\u003ePhase: 3 Phase\u003c\/li\u003e\n\u003cli data-section-id=\"1vwficb\" data-start=\"1194\" data-end=\"1231\"\u003eProtection Type: Thermal Magnetic\u003c\/li\u003e\n\u003cli data-section-id=\"ue0akg\" data-start=\"1232\" data-end=\"1258\"\u003eTrip Function Code: LI\u003c\/li\u003e\n\u003cli data-section-id=\"a9x8vx\" data-start=\"1259\" data-end=\"1303\"\u003eTrip Functions: Long-Time, Instantaneous\u003c\/li\u003e\n\u003cli data-section-id=\"rn4aoz\" data-start=\"1304\" data-end=\"1333\"\u003eTrip Adjustability: Fixed\u003c\/li\u003e\n\u003cli data-section-id=\"1guxjih\" data-start=\"1334\" data-end=\"1372\"\u003eStandards: UL 489, CSA C22.2 No. 5\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-section-id=\"1v2p98c\" data-start=\"1374\" data-end=\"1396\"\u003eElectrical Ratings\u003c\/h3\u003e\n\u003cul data-start=\"1398\" data-end=\"1542\"\u003e\n\u003cli data-section-id=\"7w6f6j\" data-start=\"1398\" data-end=\"1421\"\u003eCurrent Rating: 45A\u003c\/li\u003e\n\u003cli data-section-id=\"124hxn6\" data-start=\"1422\" data-end=\"1448\"\u003eVoltage Rating: 240VAC\u003c\/li\u003e\n\u003cli data-section-id=\"1w2hr3i\" data-start=\"1449\" data-end=\"1489\"\u003eInterrupting Capacity: 22kA @ 240VAC\u003c\/li\u003e\n\u003cli data-section-id=\"12sfb1r\" data-start=\"1490\" data-end=\"1513\"\u003eFrequency: 50\/60 Hz\u003c\/li\u003e\n\u003cli data-section-id=\"stfxxl\" data-start=\"1514\" data-end=\"1542\"\u003eTemperature Rating: 40°C\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-section-id=\"1uohfrv\" data-start=\"1544\" data-end=\"1560\"\u003eConstruction\u003c\/h3\u003e\n\u003cul data-start=\"1562\" data-end=\"1809\"\u003e\n\u003cli data-section-id=\"ghebma\" data-start=\"1562\" data-end=\"1589\"\u003ePlug-on mounting design\u003c\/li\u003e\n\u003cli data-section-id=\"10ro68j\" data-start=\"1590\" data-end=\"1625\"\u003eThermal-magnetic trip mechanism\u003c\/li\u003e\n\u003cli data-section-id=\"1mgl5pr\" data-start=\"1626\" data-end=\"1669\"\u003eHigh interrupting capacity construction\u003c\/li\u003e\n\u003cli data-section-id=\"1nys8ji\" data-start=\"1670\" data-end=\"1712\"\u003eCommon-trip operation across all poles\u003c\/li\u003e\n\u003cli data-section-id=\"1ejqqgg\" data-start=\"1713\" data-end=\"1741\"\u003eLug terminal connections\u003c\/li\u003e\n\u003cli data-section-id=\"64up4e\" data-start=\"1742\" data-end=\"1763\"\u003eHACR-rated design\u003c\/li\u003e\n\u003cli data-section-id=\"1gw6w5k\" data-start=\"1764\" data-end=\"1809\"\u003eOptional padlock attachment compatibility\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-section-id=\"zk9b8x\" data-start=\"1811\" data-end=\"1838\"\u003eConductor Compatibility\u003c\/h3\u003e\n\u003cul data-start=\"1840\" data-end=\"1961\"\u003e\n\u003cli data-section-id=\"1sj1avo\" data-start=\"1840\" data-end=\"1870\"\u003eCopper Wire Range: 8–6 AWG\u003c\/li\u003e\n\u003cli data-section-id=\"6ahznr\" data-start=\"1871\" data-end=\"1903\"\u003eAluminum Wire Range: 8–4 AWG\u003c\/li\u003e\n\u003cli data-section-id=\"gyxqxy\" data-start=\"1904\" data-end=\"1932\"\u003eMinimum Wire Size: 8 AWG\u003c\/li\u003e\n\u003cli data-section-id=\"kri4xg\" data-start=\"1933\" data-end=\"1961\"\u003eMaximum Wire Size: 4 AWG\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-section-id=\"1bgavjr\" data-start=\"1963\" data-end=\"1976\"\u003eFunctions\u003c\/h3\u003e\n\u003cul data-start=\"1978\" data-end=\"2133\"\u003e\n\u003cli data-section-id=\"1hecu90\" data-start=\"1978\" data-end=\"2001\"\u003eOverload protection\u003c\/li\u003e\n\u003cli data-section-id=\"1ga7cu8\" data-start=\"2002\" data-end=\"2030\"\u003eShort-circuit protection\u003c\/li\u003e\n\u003cli data-section-id=\"3iwljf\" data-start=\"2031\" data-end=\"2061\"\u003eLong-time delay protection\u003c\/li\u003e\n\u003cli data-section-id=\"1van10e\" data-start=\"2062\" data-end=\"2096\"\u003eInstantaneous fault protection\u003c\/li\u003e\n\u003cli data-section-id=\"1q87zn0\" data-start=\"2097\" data-end=\"2133\"\u003eSimultaneous three-pole tripping\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-section-id=\"wggvqn\" data-start=\"2135\" data-end=\"2151\"\u003eApplications\u003c\/h3\u003e\n\u003cul data-start=\"2153\" data-end=\"2443\"\u003e\n\u003cli data-section-id=\"1didibz\" data-start=\"2153\" data-end=\"2180\"\u003eSiemens EQ Load Centers\u003c\/li\u003e\n\u003cli data-section-id=\"1cb9pt3\" data-start=\"2181\" data-end=\"2208\"\u003eSiemens PL Load Centers\u003c\/li\u003e\n\u003cli data-section-id=\"1imu0ct\" data-start=\"2209\" data-end=\"2236\"\u003eSiemens ES Load Centers\u003c\/li\u003e\n\u003cli data-section-id=\"hfnan6\" data-start=\"2237\" data-end=\"2270\"\u003eSiemens Ultimate Load Centers\u003c\/li\u003e\n\u003cli data-section-id=\"1pv2pzb\" data-start=\"2271\" data-end=\"2309\"\u003eCommercial electrical distribution\u003c\/li\u003e\n\u003cli data-section-id=\"yo86gq\" data-start=\"2310\" data-end=\"2339\"\u003eHVAC equipment protection\u003c\/li\u003e\n\u003cli data-section-id=\"6tal9k\" data-start=\"2340\" data-end=\"2370\"\u003eThree-phase motor circuits\u003c\/li\u003e\n\u003cli data-section-id=\"1uq9ll\" data-start=\"2371\" data-end=\"2401\"\u003eIndustrial control systems\u003c\/li\u003e\n\u003cli data-section-id=\"66ciif\" data-start=\"2402\" data-end=\"2443\"\u003eMurray MP345 replacement applications\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-section-id=\"1siptvj\" data-start=\"2445\" data-end=\"2475\"\u003eCertifications \u0026amp; Approvals\u003c\/h3\u003e\n\u003cul data-start=\"2477\" data-end=\"2523\"\u003e\n\u003cli data-section-id=\"11a7gqd\" data-start=\"2477\" data-end=\"2490\"\u003eUL Listed\u003c\/li\u003e\n\u003cli data-section-id=\"1ygh62h\" data-start=\"2491\" data-end=\"2508\"\u003eCSA Certified\u003c\/li\u003e\n\u003cli data-section-id=\"mq9pch\" data-start=\"2509\" data-end=\"2523\"\u003eHACR Rated\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Siemens \/ ITE","offers":[{"title":"NEW","offer_id":48525287751929,"sku":"Q345H","price":98.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0750\/7810\/7385\/files\/Q345-3-Pole-Molded-Case-Circuit-Breaker_Siemens_1_1c7c8e82-1fc0-4957-ad08-5031debb80fc.webp?v=1781288112","url":"https:\/\/mycircuitbreakers.com\/products\/siemens-q345h-circuit-breaker-qph-series-45a-3-pole-240vac-plug-on-thermal-magnetic-22kaic","provider":"My Circuit Breakers","version":"1.0","type":"link"}