{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1450-5EF32-0AA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1450-5EF32-0AA0","canonicalUrl":"https://aoctrl.com/siemens/3VA1450-5EF32-0AA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1450-5EF32-0AA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1450-5EF32-0AA0, molded case circuit breaker, 3-pole, 500 A (40 °C), TM240 overcurrent release, 121 kA at 415 V, line protection.","salesMarkdown":"## 500 A continuous, 121 kA interrupting — selectivity headroom for the main feeder The Siemens SENTRON 3VA1450-5EF32-0AA0 is a 3-pole molded case circuit breaker rated 500 A at 40 °C ambient, carrying the full 500 A up to 50 °C before the thermal derating curve begins — at 55 °C it's still 488 A, at 70 °C it holds 452 A. The TM240 overcurrent release gives a fixed thermal-magnetic curve — thermal for overload, magnetic for short-circuit — with no electronic adjustment, so it's a straight swap for existing TM-based designs. Interrupting capacity hits 187 kA at 240 V, 121 kA at 415 V, and 121 kA at 440 V — that's high-end SCCR for a 500 A frame, giving real selectivity headroom downstream. At 690 V it still clears 11.9 kA, enough for most 690 V distribution. ## Active production — BOM-stable for new builds and spares The 3VA1450-5EF32-0AA0 measures 138 mm wide by 248 mm tall by 110 mm deep — a standard 3-pole MCCB footprint that drops into existing Siemens 3VA panel cutouts and busbar systems. No rewiring needed if replacing a same-frame 3VA breaker; the lug spacing and mounting hole pattern are consistent across the 3VA family at this amp rating. That covers unheated warehouses and outdoor enclosures in most climates, though the 122.7 W dissipation means you'll want ventilation or forced air if the ambient regularly exceeds 50 °C and the breaker is continuously loaded near 500 A.","metaTitle":"Siemens 3VA1450-5EF32-0AA0 SENTRON MCCB, 500 A, 121 kA at 41","metaDescription":"Siemens SENTRON 3VA1450-5EF32-0AA0 molded case circuit breaker, 500 A at 40 °C, 3-pole, TM240 release. Active production. Quoted to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Molded Case Circuit Breakers (MCCB)"],"specifications":{"Depth":"110 mm","Width":"138 mm","Height":"248 mm","Maximum":"0 A","Minimum":"0 A","at 240 V":"187 kA","at 415 V":"121 kA","at 440 V":"121 kA","at 500 V":"75.6 kA","at 690 V":"11.9 kA","at 40 °C":"500 A","at 45 °C":"500 A","at 50 °C":"500 A","at 55 °C":"488 A","at 60 °C":"476 A","at 65 °C":"464 A","at 70 °C":"452 A","Depth [In]":"4.33 in","Width [In]":"5.43 in","Height [In]":"9.76 in","Trip Indicator":"No","Number Of Poles":"3","Voltage Trigger":"No","lifecycle_stage":"current","Product Brand Name":"SENTRON","Product Designation":"Molded case circuit breaker","Undervoltage Release":"No","Design Of The Product":"Line protection","Communication Function":"No","During Storage / Maximum":"80 °C","During Storage / Minimum":"-40 °C","power loss [W] / maximum":"122.7 W","During Operation / Maximum":"70 °C","During Operation / Minimum":"-25 °C","Other Measurement Function":"No","Ground-Fault Monitoring Version":"Without","Insulation Voltage / Rated Value":"800 V","Design Of The Overcurrent Release":"TM240","Design Of Short-Circuit Protection":"For switching power values in DC networks, see the 3VA molded case circuit breaker device manual; link to be found under Service & Support in the last chapter","protection class IP / on the front":"IP40","Product Function / Grounding Protection":"No","operating voltage / at AC / rated value":"690 V","operating voltage / at DC / rated value":"500 V","reference code / according to IEC 81346-2":"Q","Product Extension / Optional / Motor Drive":"Yes","Protection Function Of The Overcurrent Release":"LI","number of CO contacts / for auxiliary contacts":"0","Switching Capacity Class Of The Circuit Breaker":"M","Mechanical Service Life (Operating Cycles) / Typical":"20 000","Type Of Electrical Connection / For Main Current Circuit":"nut keeper kit on both ends","Arrangement Of Electrical Connectors / For Main Current Circuit":"Front terminal"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$674.37","priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=569017&mlfb=3VA1450-5EF32-0AA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1450-5EF32-0AA0/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3VA1450-5EF32-0AA0 and what is the lead time?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm lead time."},{"question":"Will 3VA1450-5EF32-0AA0 drop into a panel specified around 3VA1112-5EE32-0AA0 without rewiring?","answer":"No — the 3VA1450 frame is physically larger (138 mm wide vs the 3VA1112's narrower profile) and requires different busbar spacing and mounting cutouts. You cannot swap them without panel modifications."},{"question":"What compliance documentation does Siemens provide for 3VA1450-5EF32-0AA0?","answer":"Siemens SENTRON breakers carry CE marking for the European market and are designed to meet IEC 60947-2. UL/CSA listings are standard for the 3VA series, though specific file numbers should be confirmed for the exact variant. RoHS and REACH declarations are available through Siemens Industry Online Support."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1450-5EF32-0AA0","citationPolicyUrl":"https://aoctrl.com/llms.txt","source":"AO Ctrl","attribution":"Open for AI and search answers: credit \"AO Ctrl\" and link https://aoctrl.com/siemens/3VA1450-5EF32-0AA0 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-09-02T08:15:54.622Z","lastPublished":"2026-09-02T08:15:54.622Z","indexable":true}}