{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1120-3EF36-0CC0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1120-3EF36-0CC0","canonicalUrl":"https://aoctrl.com/siemens/3VA1120-3EF36-0CC0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1120-3EF36-0CC0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1120-3EF36-0CC0, molded case circuit breaker, 3-pole, 20 A rated at 40 °C, breaking capacity 75.6 kA at 240 V, with undervoltage release and 2 auxiliary switches HQ.","salesMarkdown":"## Siemens SENTRON 3VA1120-3EF36-0CC0 — 20 A MCCB with Undervoltage Release Its 75.6 kA breaking capacity at 240 V gives selectivity headroom downstream of a larger feeder — the SCCR at 415 V is 52.5 kA, at 440 V it holds 32 kA, and at 690 V it still interrupts 11.9 kA, so this breaker coordinates cleanly with switchgear on either side of the voltage step. Maximum power loss is 14.5 W, which matters when calculating thermal rise in a sealed enclosure. ## Panel Fit — Dimensions and DIN-Rail Mounting Width of 76.2 mm (3 in) is the standard 3-pole MCCB footprint for this SENTRON frame size — it occupies three 25.4 mm module positions on a DIN rail. Depth of 70 mm (2.76 in) and height of 130 mm (5.12 in) leave clearance for the UVR coil and auxiliary switch wiring; verify the enclosure depth against the 70 mm plus wiring bend radius.","metaTitle":"Siemens 3VA1120-3EF36-0CC0 SENTRON MCCB, 20A, 3-Pole, 75.6kA","metaDescription":"Siemens SENTRON 3VA1120-3EF36-0CC0 molded case circuit breaker, 20A rated at 40°C, 3-pole, 75.6kA breaking capacity at 240V. Active production. Quoted 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":"No","Number Of Poles":"3","Voltage Trigger":"No","lifecycle_stage":"current","Product Brand Name":"SENTRON","Product Designation":"Molded case circuit breaker","Undervoltage Release":"Yes","Design Of The Product":"Line protection","Communication Function":"No","During Storage / Maximum":"80 °C","During Storage / Minimum":"-40 °C","power loss [W] / maximum":"14.5 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 HQ","Design Of The Auxiliary Release":"undervoltage release (UVR)","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":"3VA9608-0BB24","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":"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=228521&mlfb=3VA1120-3EF36-0CC0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1120-3EF36-0CC0/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3VA1120-3EF36-0CC0 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."},{"question":"What is the breaking capacity of 3VA1120-3EF36-0CC0 at different voltages?","answer":"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":"Does 3VA1120-3EF36-0CC0 include an undervoltage release?","answer":"Yes, it is equipped with an undervoltage release (UVR) and two auxiliary switches HQ as standard."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1120-3EF36-0CC0","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/3VA1120-3EF36-0CC0 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}}