{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1120-5EF32-0AH0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1120-5EF32-0AH0","canonicalUrl":"https://aoctrl.com/siemens/3VA1120-5EF32-0AH0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1120-5EF32-0AH0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1120-5EF32-0AH0, molded case circuit breaker, 3-pole, 20 A rated, TM240 release, line protection, 187 kA interrupting at 240 V.","salesMarkdown":"## SENTRON 3VA1120-5EF32-0AH0 — 20 A MCCB with TM240 release Three-pole construction with a TM240 thermal-magnetic release. The interrupting ratings drop as system voltage rises: 121 kA at 415 V, 75.6 kA at 440 V, and 17 kA at 500 V and 690 V — the 17 kA floor at 690 V still covers most industrial motor-control center fault levels. Dimensions are 130 mm high, 76.2 mm wide, 70 mm deep — a standard 3-pole MCCB footprint that fits most DIN-rail or direct-mount panel layouts. The auxiliary contacts share the same mounting space — no extra DIN rail needed. Maximum power loss is 12 W at rated current. That is low enough to avoid forced ventilation in a standard IP54 enclosure, but check the cumulative heat if you pack multiple breakers in a small cabinet.","metaTitle":"Siemens 3VA1120-5EF32-0AH0 SENTRON MCCB, 20A 3-Pole, 187kA a","metaDescription":"Siemens 3VA1120-5EF32-0AH0 SENTRON molded case circuit breaker, 20A rated, 3-pole, 187kA interrupting at 240V. TM240 release, line protection. 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":"187 kA","at 415 V":"121 kA","at 440 V":"75.6 kA","at 500 V":"17 kA","at 690 V":"17 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":"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":"3VA11205EF320AA0","Design Of The Auxiliary Switch":"2 auxiliary switches + 1 trip alarm switch HQ","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":"3","Of The Integrated Auxiliary Switch/Alarm Switch":"3VA9988-0AB12","Switching Capacity Class Of The Circuit Breaker":"M","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=250897&mlfb=3VA1120-5EF32-0AH0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1120-5EF32-0AH0/alternatives.json"},"ai":{"faq":[{"question":"What is the interrupting rating of 3VA1120-5EF32-0AH0 at 240 V?","answer":"It interrupts 187 kA at 240 V, which is the highest interrupting capacity in the 3VA1 frame at that voltage level."},{"question":"What does the TM240 release mean on this MCCB?","answer":"TM240 means a thermal-magnetic release with a 20 A fixed thermal element and adjustable magnetic pickup — suited for feeder protection where coordination with downstream breakers is needed."},{"question":"Where can I buy 3VA1120-5EF32-0AH0 and how is it quoted?","answer":"This part is sourced to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm commercial offer."},{"question":"Will 3VA1120-5EF32-0AH0 fit in a panel designed for 3VA1110-5EF32-0AM0?","answer":"The 3VA1120 and 3VA1110 share the same 3-pole frame dimensions (130 mm height, 76.2 mm width, 70 mm depth) and mounting pattern, so it drops into the same panel cutout without rewiring."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1120-5EF32-0AH0","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/3VA1120-5EF32-0AH0 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}}