{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1120-3EF32-0AB0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1120-3EF32-0AB0","canonicalUrl":"https://aoctrl.com/siemens/3VA1120-3EF32-0AB0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1120-3EF32-0AB0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1120-3EF32-0AB0, molded case circuit breaker, 3-pole, 20 A rated at 40 °C, 75.6 kA interrupting at 240 V, TM240 thermal-magnetic release, line protection design.","salesMarkdown":"The Siemens SENTRON 3VA1120-3EF32-0AB0 is a 3-pole molded case circuit breaker rated 20 A at 40 °C, with a TM240 thermal-magnetic overcurrent release designed for line protection. Its interrupting capacity reaches 75.6 kA at 240 V, stepping down to 52.5 kA at 415 V, 32 kA at 440 V, and 11.9 kA at 500 V or 690 V — figures that govern selectivity coordination in a distribution board or motor control center. Rated operational current holds steady at 20 A from 40 °C through 55 °C, then derates to 19 A at 60 °C and above — a curve that matters when the breaker shares a closed panel with other heat sources. The TM240 release is a fixed thermal-magnetic unit, not electronic, so there is no adjustment dial or communication module; trip characteristics are factory-set. Power loss is 12 W maximum, which factors into enclosure thermal rise calculations when multiple breakers are ganged.","metaTitle":"Siemens 3VA1120-3EF32-0AB0 SENTRON MCCB, 20 A, 3-Pole, 75.6","metaDescription":"Siemens SENTRON 3VA1120-3EF32-0AB0 molded case circuit breaker, 20 A rated, 3-pole, 75.6 kA interrupting at 240 V. Active production. Sourced 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":"No","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 HP","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","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":"3VA9988-0AA11","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=148595&mlfb=3VA1120-3EF32-0AB0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1120-3EF32-0AB0/alternatives.json"},"ai":{"faq":[{"question":"Who supplies 3VA1120-3EF32-0AB0 and how is it quoted for volume purchases?","answer":"This part is sourced to order against an RFQ through independent distribution channels; availability and current pricing are confirmed at quote time for any volume."},{"question":"What are the key ratings of 3VA1120-3EF32-0AB0?","answer":"It is a 3-pole molded case circuit breaker rated 20 A at 40 °C, with a 75.6 kA interrupting capacity at 240 V and an 800 V insulation voltage, using a TM240 thermal-magnetic release."},{"question":"What is the depth of 3VA1120-3EF32-0AB0?","answer":"The depth is 70 mm (2.76 in), with a width of 76.2 mm (3 in) and a height of 130 mm (5.12 in)."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1120-3EF32-0AB0","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/3VA1120-3EF32-0AB0 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}}