{"product_id":"siemens-3va5450-5ec31-0aa0-500-amp-3-pole-molded-case-circuit-breaker-panel-mount-480vac-500vdc-rated","title":"Siemens 3VA5450-5EC31-0AA0 500 Amp 3-Pole Molded Case Circuit Breaker – Panel Mount – 480VAC \u0026 500VDC Rated","description":"\u003cdiv class=\"qMYqUG_convSearchResultHighlightRoot\"\u003e\n\u003cdiv class=\"\" data-turn-id-container=\"request-6a21ac48-87a0-83ec-890f-5a08b3a83112-26\" data-is-intersecting=\"true\"\u003e\n\u003csection class=\"text-token-text-primary w-full focus:outline-none has-data-writing-block:pointer-events-none [\u0026amp;:has([data-writing-block])\u0026gt;*]:pointer-events-auto R6Vx5W_threadScrollVars scroll-mb-[calc(var(--scroll-root-safe-area-inset-bottom,0px)+var(--thread-response-height))] scroll-mt-[calc(var(--header-height)+min(200px,max(70px,20svh)))]\" dir=\"auto\" data-turn-id=\"request-6a21ac48-87a0-83ec-890f-5a08b3a83112-26\" data-turn-id-container=\"request-6a21ac48-87a0-83ec-890f-5a08b3a83112-26\" data-testid=\"conversation-turn-144\" data-scroll-anchor=\"false\" data-turn=\"assistant\"\u003e\n\u003cdiv class=\"text-base my-auto mx-auto pb-10 [--thread-content-margin:var(--thread-content-margin-xs,calc(var(--spacing)*4))] @w-sm\/main:[--thread-content-margin:var(--thread-content-margin-sm,calc(var(--spacing)*6))] @w-lg\/main:[--thread-content-margin:var(--thread-content-margin-lg,calc(var(--spacing)*16))] px-(--thread-content-margin)\"\u003e\n\u003cdiv data-conversation-screenshot-content=\"\" class=\"[--thread-content-max-width:40rem] @w-lg\/main:[--thread-content-max-width:48rem] mx-auto max-w-(--thread-content-max-width) flex-1 group\/turn-messages focus-visible:outline-hidden relative flex w-full min-w-0 flex-col agent-turn\"\u003e\n\u003cdiv class=\"flex max-w-full flex-col gap-4 grow\"\u003e\n\u003cdiv data-message-author-role=\"assistant\" data-message-id=\"2587ce2f-b2c0-49b6-b0d0-d5c3d0f8cb5b\" dir=\"auto\" data-message-model-slug=\"gpt-5-3-mini\" class=\"min-h-8 text-message relative flex w-full flex-col items-end gap-2 text-start break-words whitespace-normal outline-none keyboard-focused:focus-ring [.text-message+\u0026amp;]:mt-1\" data-turn-start-message=\"true\" tabindex=\"0\"\u003e\n\u003cdiv class=\"flex w-full flex-col gap-1 empty:hidden\"\u003e\n\u003cdiv class=\"markdown prose dark:prose-invert wrap-break-word w-full dark markdown-new-styling\"\u003e\n\u003cp data-start=\"131\" data-end=\"674\"\u003eThe Siemens 3VA5450-5EC31-0AA0 is a high-capacity molded case circuit breaker (MCCB) from the SENTRON 3VA5 series, designed for demanding commercial and industrial power distribution systems. Built on a 3VA5 600A frame, this 500A, 3-pole breaker provides reliable long-time and instantaneous (LI) protection using a TM230 thermal-magnetic trip unit with fixed thermal and adjustable magnetic settings. It is engineered for dependable performance in feeder and distribution applications where high fault protection is required.\u003c\/p\u003e\n\u003cp data-start=\"676\" data-end=\"932\"\u003eThis breaker installs into Siemens 3VA panelboards and switchboards, providing a modern upgrade path for systems using legacy LD63B500 components. It supports high-energy electrical environments and ensures stable operation under demanding load conditions.\u003c\/p\u003e\n\u003ch3 data-section-id=\"yc43s8\" data-start=\"934\" data-end=\"956\"\u003eVoltage and Rating\u003c\/h3\u003e\n\u003cul data-start=\"958\" data-end=\"1138\"\u003e\n\u003cli data-section-id=\"edhxcx\" data-start=\"958\" data-end=\"986\"\u003eCurrent Rating: 500 Amps\u003c\/li\u003e\n\u003cli data-section-id=\"16x0llm\" data-start=\"987\" data-end=\"1021\"\u003eVoltage Rating: 600VAC, 500VDC\u003c\/li\u003e\n\u003cli data-section-id=\"13hyuq3\" data-start=\"1022\" data-end=\"1040\"\u003ePhase: 3-Phase\u003c\/li\u003e\n\u003cli data-section-id=\"12sfb1r\" data-start=\"1041\" data-end=\"1064\"\u003eFrequency: 50\/60 Hz\u003c\/li\u003e\n\u003cli data-section-id=\"17gzyhl\" data-start=\"1065\" data-end=\"1138\"\u003eAIC Rating:\n\u003cul data-start=\"1081\" data-end=\"1138\"\u003e\n\u003cli data-section-id=\"aw9iru\" data-start=\"1081\" data-end=\"1098\"\u003e85kA @ 240VAC\u003c\/li\u003e\n\u003cli data-section-id=\"1vwgnt7\" data-start=\"1101\" data-end=\"1118\"\u003e35kA @ 480VAC\u003c\/li\u003e\n\u003cli data-section-id=\"1w4do8e\" data-start=\"1121\" data-end=\"1138\"\u003e18kA @ 600VAC\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-section-id=\"uvdx3z\" data-start=\"1140\" data-end=\"1162\"\u003eKey Specifications\u003c\/h3\u003e\n\u003cul data-start=\"1164\" data-end=\"1684\"\u003e\n\u003cli data-section-id=\"182vtm7\" data-start=\"1164\" data-end=\"1216\"\u003eBreaker Type: Molded Case Circuit Breaker (MCCB)\u003c\/li\u003e\n\u003cli data-section-id=\"1ps02u8\" data-start=\"1217\" data-end=\"1241\"\u003eSeries: SENTRON 3VA5\u003c\/li\u003e\n\u003cli data-section-id=\"s9zoqv\" data-start=\"1242\" data-end=\"1257\"\u003eFamily: 3VA\u003c\/li\u003e\n\u003cli data-section-id=\"x28t80\" data-start=\"1258\" data-end=\"1293\"\u003ePart Number: 3VA5450-5EC31-0AA0\u003c\/li\u003e\n\u003cli data-section-id=\"1plsgom\" data-start=\"1294\" data-end=\"1325\"\u003eFrame Size: 3VA5 600A Frame\u003c\/li\u003e\n\u003cli data-section-id=\"bad5e\" data-start=\"1326\" data-end=\"1353\"\u003eNumber of Poles: 3-Pole\u003c\/li\u003e\n\u003cli data-section-id=\"1jku7n8\" data-start=\"1354\" data-end=\"1385\"\u003eMounting Style: Panel Mount\u003c\/li\u003e\n\u003cli data-section-id=\"7e1nce\" data-start=\"1386\" data-end=\"1443\"\u003eTerminal Type: Lugs (sold separately where specified)\u003c\/li\u003e\n\u003cli data-section-id=\"1b3baop\" data-start=\"1444\" data-end=\"1481\"\u003eTrip Technology: Thermal Magnetic\u003c\/li\u003e\n\u003cli data-section-id=\"1cxaqxw\" data-start=\"1482\" data-end=\"1502\"\u003eTrip Unit: TM230\u003c\/li\u003e\n\u003cli data-section-id=\"ue0akg\" data-start=\"1503\" data-end=\"1529\"\u003eTrip Function Code: LI\u003c\/li\u003e\n\u003cli data-section-id=\"rgmkkq\" data-start=\"1530\" data-end=\"1587\"\u003eTrip Function: Long-Time and Instantaneous Protection\u003c\/li\u003e\n\u003cli data-section-id=\"gtcxsd\" data-start=\"1588\" data-end=\"1646\"\u003eTrip Adjustability: Fixed Thermal, Adjustable Magnetic\u003c\/li\u003e\n\u003cli data-section-id=\"1vwficb\" data-start=\"1647\" data-end=\"1684\"\u003eProtection Type: Thermal Magnetic\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-section-id=\"nucr17\" data-start=\"1686\" data-end=\"1714\"\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cul data-start=\"1716\" data-end=\"1995\"\u003e\n\u003cli data-section-id=\"112ow9o\" data-start=\"1716\" data-end=\"1783\"\u003eBreaking Capacity Class: Class M (medium interrupting capacity)\u003c\/li\u003e\n\u003cli data-section-id=\"9l1yze\" data-start=\"1784\" data-end=\"1845\"\u003eApplication: Industrial and Commercial Power Distribution\u003c\/li\u003e\n\u003cli data-section-id=\"1swkojp\" data-start=\"1846\" data-end=\"1925\"\u003eCompatibility: Siemens 3VA Panelboards, Switchboards, Motor Control Centers\u003c\/li\u003e\n\u003cli data-section-id=\"178gjm7\" data-start=\"1926\" data-end=\"1995\"\u003eConstruction Features: HACR Rated, Current Limiting, Reverse Feed\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-section-id=\"nr5bwx\" data-start=\"1997\" data-end=\"2024\"\u003eStandards and Approvals\u003c\/h3\u003e\n\u003cul data-start=\"2026\" data-end=\"2132\"\u003e\n\u003cli data-section-id=\"buyia9\" data-start=\"2026\" data-end=\"2060\"\u003eStandards: IEC 60947-2, UL 489\u003c\/li\u003e\n\u003cli data-section-id=\"1gw0vfk\" data-start=\"2061\" data-end=\"2132\"\u003eApprovals: UL, CSA, CE, cULus, DNV, EAC, GL, Lloyd’s, RCM, VDE, ABS\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-section-id=\"1aljov1\" data-start=\"2134\" data-end=\"2150\"\u003eProduct Data\u003c\/h3\u003e\n\u003cul data-start=\"2152\" data-end=\"2238\"\u003e\n\u003cli data-section-id=\"qi30mg\" data-start=\"2152\" data-end=\"2177\"\u003eManufacturer: Siemens\u003c\/li\u003e\n\u003cli data-section-id=\"1ps02u8\" data-start=\"2178\" data-end=\"2202\"\u003eSeries: SENTRON 3VA5\u003c\/li\u003e\n\u003cli data-section-id=\"x28t80\" data-start=\"2203\" data-end=\"2238\"\u003ePart Number: 3VA5450-5EC31-0AA0\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-section-id=\"wggvqn\" data-start=\"2240\" data-end=\"2256\"\u003eApplications\u003c\/h3\u003e\n\u003cul data-start=\"2258\" data-end=\"2601\" data-is-last-node=\"\" data-is-only-node=\"\"\u003e\n\u003cli data-section-id=\"yi6n97\" data-start=\"2258\" data-end=\"2299\"\u003eIndustrial Power Distribution Systems\u003c\/li\u003e\n\u003cli data-section-id=\"1cfavo2\" data-start=\"2300\" data-end=\"2339\"\u003eCommercial Electrical Installations\u003c\/li\u003e\n\u003cli data-section-id=\"5j9qow\" data-start=\"2340\" data-end=\"2372\"\u003ePanelboards and Switchboards\u003c\/li\u003e\n\u003cli data-section-id=\"a5hesb\" data-start=\"2373\" data-end=\"2398\"\u003eMotor Control Centers\u003c\/li\u003e\n\u003cli data-section-id=\"tk43vu\" data-start=\"2399\" data-end=\"2428\"\u003eFeeder Circuit Protection\u003c\/li\u003e\n\u003cli data-section-id=\"a2bybv\" data-start=\"2429\" data-end=\"2458\"\u003eBranch Circuit Protection\u003c\/li\u003e\n\u003cli data-section-id=\"1msjpjf\" data-start=\"2459\" data-end=\"2494\"\u003eHigh Fault Current Applications\u003c\/li\u003e\n\u003cli data-section-id=\"1g1kkou\" data-start=\"2495\" data-end=\"2533\"\u003eHeavy Electrical Load Distribution\u003c\/li\u003e\n\u003cli data-section-id=\"1pumc6t\" data-start=\"2534\" data-end=\"2569\"\u003eCritical Infrastructure Systems\u003c\/li\u003e\n\u003cli data-section-id=\"1vwgmrb\" data-start=\"2570\" data-end=\"2601\" data-is-last-node=\"\"\u003eRetrofit and Upgrade Projects\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"z-0 flex min-h-[46px] justify-start\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv class=\"mt-3 w-full empty:hidden\"\u003e\n\u003cdiv class=\"text-center\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Siemens \/ ITE","offers":[{"title":"NEW","offer_id":48491019567353,"sku":"3VA5450-5EC31-0AA0","price":2526.03,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0750\/7810\/7385\/files\/3VA5210-5EC61-0AA0-All-New-1_4a8cf230-fbab-47e1-b8a1-f500a9091ea6.webp?v=1780750223","url":"https:\/\/mycircuitbreakers.com\/products\/siemens-3va5450-5ec31-0aa0-500-amp-3-pole-molded-case-circuit-breaker-panel-mount-480vac-500vdc-rated","provider":"My Circuit Breakers","version":"1.0","type":"link"}