{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA2063-8JQ42-0AA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA2063-8JQ42-0AA0","canonicalUrl":"https://aoctrl.com/siemens/3VA2063-8JQ42-0AA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA2063-8JQ42-0AA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA2063-8JQ42-0AA0, molded case circuit breaker, 63 A, 4-pole, line protection, 440 kA at 240 V, 330 kA at 415 V, 220 kA at 500 V, 52.5 kA at 690 V.","salesMarkdown":"The Siemens SENTRON 3VA2063-8JQ42-0AA0 is a 4-pole molded case circuit breaker (MCCB) rated for 63 A continuous current, designed for line protection in distribution panels. Its 440 kA breaking capacity at 240 VAC and 330 kA at 415 VAC give it the headroom to clear high-fault scenarios without cascading upstream — critical for maintaining selectivity in a multi-level distribution scheme. At 240 V the unit interrupts 440 kA; at 415 V and 440 V it holds 330 kA; at 500 V it drops to 220 kA; at 690 V it still clears 52.5 kA. That curve means the breaker stays coordinated with downstream 18 kA or 25 kA devices across most industrial voltages — the site electrical engineer can size upstream fuses or transformers without overbuilding the fault rating. ## Thermal performance and derating The 63 A continuous rating holds flat from 40 °C through 70 °C ambient (–) — no derating curve to calculate for a warm panel. Maximum power loss is 3 W, negligible for enclosure heat load calculations. Operating range spans -25 °C to 70 °C; storage from -40 °C to 80 °C. At 181 mm high, 140 mm wide, and 86 mm deep, the breaker fits standard 200 mm deep enclosures with room for rear cable entry. The 140 mm width is the 4-pole footprint — verify the mounting plate pattern against the existing SENTRON 3VA cutout if replacing an older 3VF or 3VL series breaker.","metaTitle":"Siemens 3VA2063-8JQ42-0AA0 SENTRON MCCB, 63 A, 4-Pole, 440 k","metaDescription":"Siemens SENTRON 3VA2063-8JQ42-0AA0 molded case circuit breaker, 63 A continuous, 4-pole, 440 kA breaking capacity at 240 VAC. Current production, available to order. Quoted against","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Molded Case Circuit Breakers (MCCB)"],"specifications":{"Depth":"86 mm","Width":"140 mm","Height":"181 mm","Maximum":"756 A","Minimum":"95 A","at 240 V":"440 kA","at 415 V":"330 kA","at 440 V":"330 kA","at 500 V":"220 kA","at 690 V":"52.5 kA","at 40 °C":"63 A","at 45 °C":"63 A","at 50 °C":"63 A","at 55 °C":"63 A","at 60 °C":"63 A","at 65 °C":"63 A","at 70 °C":"63 A","Depth [In]":"3.39 in","Width [In]":"5.51 in","Height [In]":"7.13 in","Initial Value":"16 A","Trip Indicator":"No","Number Of Poles":"4","Voltage Trigger":"No","lifecycle_stage":"current","Full-Scale Value":"63 A","Product Brand Name":"SENTRON","Product Designation":"Molded case circuit breaker","Undervoltage Release":"No","Design Of The Product":"Line protection","Communication Function":"Yes","During Storage / Maximum":"80 °C","During Storage / Minimum":"-40 °C","power loss [W] / maximum":"3 W","During Operation / Maximum":"70 °C","During Operation / Minimum":"-25 °C","Other Measurement Function":"No","Ground-Fault Monitoring Version":"Summation current formation L + N conductor","Continuous Current / Rated Value":"63 A","Insulation Voltage / Rated Value":"800 V","Design Of The Overcurrent Release":"ETU560","protection class IP / on the front":"IP40","design of the N-conductor protection":"adjustable OFF; 40% to 160%","Product Function / Grounding Protection":"Yes","operating voltage / at AC / rated value":"690 V","reference code / according to IEC 81346-2":"Q","Continuous Current / Rated Value / Maximum":"100 A","Product Extension / Optional / Motor Drive":"Yes","Protection Function Of The Overcurrent Release":"LSIG","number of CO contacts / for auxiliary contacts":"0","Switching Capacity Class Of The Circuit Breaker":"L","Mechanical Service Life (Operating Cycles) / Typical":"25 000","Type Of Electrical Connection / For Main Current Circuit":"on both sides nut keeper kit","Arrangement Of Electrical Connectors / For Main Current Circuit":"Front terminal"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/e7f4d704be84ed8d4511aaf23cd2ba85.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=521547&mlfb=3VA2063-8JQ42-0AA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA2063-8JQ42-0AA0/alternatives.json"},"ai":{"faq":[{"question":"What are the key ratings for 3VA2063-8JQ42-0AA0?","answer":"63 A continuous current, 4-pole, breaking capacity of 440 kA at 240 VAC, 330 kA at 415 VAC, and 800 V rated insulation voltage."},{"question":"Where can I buy 3VA2063-8JQ42-0AA0 and how is it quoted?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution channels. Availability and current pricing are confirmed at the time of quote."},{"question":"Does 3VA2063-8JQ42-0AA0 have a communication function?","answer":"Yes, the breaker includes a communication function for integration into a monitored distribution system."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA2063-8JQ42-0AA0","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/3VA2063-8JQ42-0AA0 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}}