{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1120-3EF32-0JC0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1120-3EF32-0JC0","canonicalUrl":"https://aoctrl.com/siemens/3VA1120-3EF32-0JC0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1120-3EF32-0JC0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1120-3EF32-0JC0, molded case circuit breaker, 3-pole, 20 A rated current at 40 °C, breaking capacity 75.6 kA at 240 V AC, with shunt trip release and 2 auxiliary switches HQ.","salesMarkdown":"Breaking capacity hits 75.6 kA at 240 V, 52.5 kA at 415 V, and 32 kA at 440 V; at 500 V and 690 V it holds 11.9 kA. That covers most industrial service-entrance and feeder applications within a 480Y/277 V or 400 V distribution system. The 70 mm depth and 76.2 mm width fit standard Siemens 3VA mounting bases — no panel rework if swapping from an earlier 3VA frame. ## Integrated accessories The shunt trip allows remote tripping from a PLC or emergency-stop circuit, while the aux switches provide status feedback for the panel controller. The supplied basic switch is 3VA11203EF320AA0, so replacement of the switching mechanism alone is possible without replacing the entire breaker.","metaTitle":"Siemens 3VA1120-3EF32-0JC0 SENTRON MCCB, 20 A, 3-Pole, 75.6","metaDescription":"Siemens 3VA1120-3EF32-0JC0 SENTRON molded case circuit breaker, 20 A rated at 40 °C, 3-pole, breaking capacity 75.6 kA at 240 V. Active production. Quoted to order.","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","Maximum":"0 A","Minimum":"0 A","at 240 V":"75.6 kA","at 415 V":"52.5 kA","at 440 V":"32 kA","at 500 V":"11.9 kA","at 690 V":"11.9 kA","at 40 °C":"20 A","at 45 °C":"20 A","at 50 °C":"20 A","at 55 °C":"20 A","at 60 °C":"19 A","at 65 °C":"19 A","at 70 °C":"19 A","Depth [In]":"2.76 in","Width [In]":"3 in","Height [In]":"5.12 in","Trip Indicator":"No","Number Of Poles":"3","Voltage Trigger":"Yes","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":"12 W","During Operation / Maximum":"70 °C","During Operation / Minimum":"-25 °C","Other Measurement Function":"No","Of The Supplied Basic Switch":"3VA11203EF320AA0","Design Of The Auxiliary Switch":"2 auxiliary switches HQ","Design Of The Auxiliary Release":"shunt trip (STL)","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","Of The Integrated Auxiliary Trip Unit":"3VA9688-0BL32","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":"2","Of The Integrated Auxiliary Switch/Alarm Switch":"3VA9988-0AA12","Switching Capacity Class Of The Circuit Breaker":"N","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":null,"priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=315013&mlfb=3VA1120-3EF32-0JC0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1120-3EF32-0JC0/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3VA1120-3EF32-0JC0 and how do I get a price?","answer":"This part is sourced and quoted to order through independent distribution. Submit an RFQ for current pricing and availability — confirmed at quote time."},{"question":"What is the breaking capacity of 3VA1120-3EF32-0JC0 at different voltages?","answer":"Breaking capacity is 75.6 kA at 240 V, 52.5 kA at 415 V, 32 kA at 440 V, and 11.9 kA at both 500 V and 690 V."},{"question":"What are the physical dimensions of 3VA1120-3EF32-0JC0?","answer":"The breaker measures 70 mm deep, 76.2 mm wide, and 130 mm high."},{"question":"Does 3VA1120-3EF32-0JC0 include a shunt trip or auxiliary switches?","answer":"Yes, it ships with a factory-installed shunt trip release (STL) and two auxiliary switches HQ."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1120-3EF32-0JC0","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/3VA1120-3EF32-0JC0 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}}