{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1050-4ED32-0KC0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1050-4ED32-0KC0","canonicalUrl":"https://aoctrl.com/siemens/3VA1050-4ED32-0KC0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1050-4ED32-0KC0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1050-4ED32-0KC0, 3-pole molded case circuit breaker, 50 A rated continuous current, 121 kA breaking capacity at 240 V AC, TM210 overcurrent release, shunt trip, 2 HQ auxiliary switches.","salesMarkdown":"## Line protection MCCB with TM210 release At 415 V the interrupting rating is 75.6 kA, and at 690 V it drops to 11.9 kA, so verify the system voltage against the site's available fault current before specifying. ## Current derating and thermal limits Above that, derating begins: 48 A at 55 °C, 47 A at 60 °C, 46 A at 65 °C, and 45 A at 70 °C. For panels running warm — near drives or transformers — the 55 °C derating step is the first one that matters for sizing. ## Integrated accessories and auxiliary contacts Two HQ auxiliary switches are built in — these provide status feedback (open/closed/tripped) to a PLC or indication lamp without needing a separate auxiliary contact block. Dimensions: 130 mm height, 76.2 mm width (3-pole standard), 70 mm depth. No trip indicator on the front — status is read from the auxiliary switches or the handle position. The shunt trip wiring must be run separately; verify polarity for the STL coil before energizing.","metaTitle":"Siemens SENTRON 3VA1050-4ED32-0KC0 MCCB, 50 A, 121 kA at 240","metaDescription":"Siemens SENTRON 3VA1050-4ED32-0KC0 molded case circuit breaker, 3-pole, 50 A rated continuous current, 121 kA breaking capacity at 240 V AC. Current lifecycle stage, sourced to ord","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Molded Case Circuit Breakers (MCCB)"],"specifications":{"Depth":"70 mm","Width":"76.2 mm","Height":"130 mm","at 240 V":"121 kA","at 415 V":"75.6 kA","at 440 V":"52.5 kA","at 690 V":"11.9 kA","at 40 °C":"50 A","at 45 °C":"50 A","at 50 °C":"50 A","at 55 °C":"48 A","at 60 °C":"47 A","at 65 °C":"46 A","at 70 °C":"45 A","Trip indicator":"No","Number of poles":"3","Product version":"Line protection","Voltage trigger":"Yes","lifecycle_stage":"current","Product brand name":"SENTRON","Product designation":"Molded case circuit breaker","Latching - endurance":"15 000","Undervoltage Release":"No","Communication Function":"No","Phase failure detection":"No","During Storage / Maximum":"80 °C","During Storage / Minimum":"-40 °C","Auxiliary contact version":"2 auxiliary switches HQ","During Operation / Maximum":"70 °C","During Operation / Minimum":"-25 °C","Other Measurement Function":"No","Rated continuous current Iu":"50 A","Rated insulation voltage Ui":"800 V","Design of the auxiliary release":"Shunt trip (STL)","Ground fault monitoring version":"Without","Of The Integrated Auxiliary Trip":"3VA9688-0BL33","Design of the overcurrent release":"TM210","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","Reference code / acc. to DIN EN 81346-2":"Q","Adjustable response value time / tr max.":"1","Adjustable response value time / tr min.":"1","Max. rated operational voltage Ue with DC":"500 V","Undervoltage Release With Leading Contact":"No","Product extension / optional / motor drive":"No","Adjustable response value current / Ir max.":"50 A","Adjustable response value current / li max.":"500 A","Adjustable response value current / li min.":"500 A","Adjustable response value current / lr min.":"50 A","Neutral conductors / upgradeable/retrofittable":"No","Number of CO contacts / for auxiliary contacts":"2","Protective function of the overcurrent release":"LI","Of The Integrated Auxiliary Switch/Alarm Switch":"3VA9988-0AA12","Switching capacity class of the circuit breaker":"S","Max. rated operational current of the frame size":"100 A","Max. rated operational voltage Ue with AC 50/60Hz":"690 V","Type of electrical connection / for main current circuit":"lug terminal","Arrangement of electrical connectors / for main current circuit":"Front terminal","Type of connectable conductor cross-section, connection screw, width x thickness , max.":"17 x 6.5","Type of connectable conductor cross-section, connection screw, width x thickness , min.":"12 x 0"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=157525&mlfb=3VA1050-4ED32-0KC0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1050-4ED32-0KC0/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3VA1050-4ED32-0KC0 and how is it quoted?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — no stock figures or lead-time numbers are published here."},{"question":"What are the key interrupting ratings for 3VA1050-4ED32-0KC0?","answer":"121 kA at 240 V AC, 75.6 kA at 415 V AC, 52.5 kA at 440 V AC, and 11.9 kA at 690 V AC. The 240 V rating is the highest — suitable for high-fault locations like main switchboards. Verify the system voltage and available fault current against these values."},{"question":"Will 3VA1050-4ED32-0KC0 drop into a panel specified for 3VA1010-4ED32-0AC0?","answer":"The 3VA1050 frame shares the same 76.2 mm width and 130 mm height as the 3VA1010 frame, so the panel cutout and DIN-rail footprint are identical. The depth is 70 mm on both. Wiring terminals and accessory slots are the same. The only difference is the continuous current rating — 50 A vs 10 A — so the panel bus and cable sizing must support the higher current."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1050-4ED32-0KC0","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/3VA1050-4ED32-0KC0 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}}