{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1120-3EF36-0JH0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1120-3EF36-0JH0","canonicalUrl":"https://aoctrl.com/siemens/3VA1120-3EF36-0JH0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1120-3EF36-0JH0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1120-3EF36-0JH0, molded case circuit breaker, 3-pole, 20 A rated current, 75.6 kA breaking capacity at 240 V AC, line protection design.","salesMarkdown":"It carries a rated current of 20 A with full thermal capacity maintained from 40 °C through 55 °C, derating to 19 A at 60 °C and above — relevant for panels running warm in non-climate-controlled enclosures. Breaking capacity is the headline selector here: 75.6 kA at 240 V AC, 52.5 kA at 415 V, 32 kA at 440 V, and 11.9 kA at both 500 V and 690 V. That 75.6 kA figure at 240 V covers high-fault service-entrance applications on 208Y/120 V or 240 V delta systems; the 52.5 kA at 415 V handles most European 400 V distribution without upstream fusing. ## Auxiliary and release configuration No undervoltage release is fitted, and there is no ground-fault monitoring module on this variant. A voltage trigger and trip indicator are present on the breaker face — the trip indicator gives a visual flag that the breaker opened on a fault rather than manually, which speeds fault-finding on a line-down call. The 76.2 mm width (3 in) is the standard 3-pole MCCB footprint for the SENTRON 3VA1 frame; it mounts on a DIN rail or directly to a mounting plate via the base slots. Maximum power loss is 12 W, so no special ventilation is required in a standard IP3X or IP4X enclosure.","metaTitle":"Siemens 3VA1120-3EF36-0JH0 SENTRON MCCB, 3-pole 20 A, 75.6 k","metaDescription":"Siemens 3VA1120-3EF36-0JH0 SENTRON molded case circuit breaker, 3-pole, 20 A rated current, 75.6 kA breaking capacity at 240 V AC. Active production. Sourced to order against RFQ.","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":"Yes","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":"3VA11203EF360AA0","Design Of The Auxiliary Switch":"2 auxiliary switches + 1 trip alarm switch 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":"3","Of The Integrated Auxiliary Switch/Alarm Switch":"3VA9988-0AB12","Switching Capacity Class Of The Circuit Breaker":"N","Mechanical Service Life (Operating Cycles) / Typical":"20 000","Type Of Electrical Connection / For Main Current Circuit":"box terminal on both sides","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=51360&mlfb=3VA1120-3EF36-0JH0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1120-3EF36-0JH0/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3VA1120-3EF36-0JH0?","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 commitment."},{"question":"What is the breaking capacity of this MCCB at 415 V?","answer":"52.5 kA at 415 V AC. At 240 V it is 75.6 kA, at 440 V it is 32 kA, and at 500 V and 690 V it is 11.9 kA."},{"question":"Will 3VA1120-3EF36-0JH0 drop into a panel specified for 3VA1110-5ED36-0AC0?","answer":"Both are 3-pole SENTRON 3VA1 frame breakers sharing the same 76.2 mm width, 130 mm height, and 70 mm depth, so the mechanical fit is identical. The difference is in the trip rating and breaking capacity — the 3VA1110-5ED36-0AC0 is a different amperage and accessory configuration, so verify the protection settings before swapping."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1120-3EF36-0JH0","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/3VA1120-3EF36-0JH0 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}}