{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1120-5EE32-0AA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1120-5EE32-0AA0","canonicalUrl":"https://aoctrl.com/siemens/3VA1120-5EE32-0AA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1120-5EE32-0AA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1120-5EE32-0AA0, 3-pole molded case circuit breaker, 20 A rated, TM220 release, 187 kA interrupting at 240 V AC, IP40 front.","salesMarkdown":"The Siemens 3VA1120-5EE32-0AA0 is a SENTRON 3-pole molded case circuit breaker rated 20 A continuous at 40 °C, with a TM220 thermal-magnetic release. It breaks up to 187 kA at 240 V AC, 121 kA at 415 V, 75.6 kA at 440 V, and 17 kA at 500/690 V — high-interrupting capacity that covers most industrial panelboard and distribution applications. The 70 mm depth, 76.2 mm width, and 130 mm height fit standard SENTRON mounting footprints, and the IP40 front protection suits enclosed panel mounting. ## Interrupting capacity and release design The 187 kA at 240 V is the headline number, but the 121 kA at 415 V is the one that matters for most three-phase 400 V distribution — that's well above typical available fault current in commercial and light industrial panels, so you get selectivity headroom without oversizing. The 20 A rating holds flat from 40 °C to 55 °C, then derates to 19 A at 60–70 °C — no surprises for a panel running warm. Maximum power loss is 12 W, which is modest for a 20 A MCCB.","metaTitle":"Siemens 3VA1120-5EE32-0AA0 SENTRON MCCB, 20 A, 187 kA at 240","metaDescription":"Siemens 3VA1120-5EE32-0AA0 SENTRON molded case circuit breaker, 3-pole, 20 A rated, 187 kA interrupting at 240 V. TM220 release, IP40 front. Current lifecycle. Quoted to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","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":"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","Ground-Fault Monitoring Version":"Without","Insulation Voltage / Rated Value":"800 V","Design Of The Overcurrent Release":"TM220","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":"0","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":"https://cdn.aoctrl.com/050331533b25715721321a6b2a6ca9ad.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=249314&mlfb=3VA1120-5EE32-0AA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1120-5EE32-0AA0/alternatives.json"},"ai":{"faq":[{"question":"What is the interrupting capacity of 3VA1120-5EE32-0AA0 at 415 V?","answer":"121 kA at 415 V AC, which is the relevant figure for most three-phase 400 V distribution panels."},{"question":"What does the TM220 release designation mean?","answer":"TM220 is a fixed thermal-magnetic overcurrent release — the thermal element handles overloads, the magnetic element handles short-circuits. No electronic adjustments or communication."},{"question":"Will 3VA1120-5EE32-0AA0 drop into a panel specified for 3VA1110-5ED32-0AA0?","answer":"Both are 3-pole SENTRON MCCBs with the same 70 mm depth, 76.2 mm width, and 130 mm height, so the mechanical footprint is identical. The difference is in the release and interrupting rating — verify the 20 A TM220 release matches your coordination study before swapping."},{"question":"Where can I buy 3VA1120-5EE32-0AA0 and how is it quoted?","answer":"We source this part to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm price and lead time."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1120-5EE32-0AA0","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/3VA1120-5EE32-0AA0 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}}