{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1120-5EE42-0AA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1120-5EE42-0AA0","canonicalUrl":"https://aoctrl.com/siemens/3VA1120-5EE42-0AA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1120-5EE42-0AA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1120-5EE42-0AA0, 4-pole molded case circuit breaker, line protection, 20 A rated, TM220 overcurrent release, 187 kA at 240 V.","salesMarkdown":"The Siemens SENTRON 3VA1120-5EE42-0AA0 is a 4-pole molded case circuit breaker (MCCB) designed for line protection, carrying a 20 A continuous rating at 40 °C and a TM220 thermal-magnetic overcurrent release. The 20 A rating holds flat from 40 °C up to 55 °C, then derates to 19 A at 60 °C and above — so in a warm enclosure you lose only 1 A, not a full trip threshold. The TM220 release gives a fixed thermal curve with magnetic pickup around 10x In, typical for motor or general distribution branch circuits where short-circuit coordination, not nuisance tripping, is the priority. Rated insulation voltage is 800 V, and the interrupting ratings step down as voltage climbs: 75.6 kA at 440 V, 17 kA at 500 V and 690 V. No end-of-life notice or successor has been issued. That's one less SKU to worry about for the next five years. Footprint is 101.6 mm wide by 130 mm tall by 70 mm deep — a 4-inch-wide body that fits standard Siemens 3VA panel-mounting patterns.","metaTitle":"Siemens 3VA1120-5EE42-0AA0 SENTRON MCCB, 4P, 20 A, 187 kA at","metaDescription":"Siemens SENTRON 3VA1120-5EE42-0AA0 molded case circuit breaker, 4-pole, 20 A rated, TM220 release, 187 kA at 240 V. Current lifecycle stage. Available to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Molded Case Circuit Breakers (MCCB)"],"specifications":{"Depth":"70 mm","Width":"101.6 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]":"4 in","Height [In]":"5.12 in","Trip Indicator":"No","Number Of Poles":"4","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","design of the N-conductor protection":"without","Product Function / Grounding Protection":"No","operating voltage / at AC / rated value":"690 V","operating voltage / at DC / rated value":"600 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":null,"sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=255197&mlfb=3VA1120-5EE42-0AA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1120-5EE42-0AA0/alternatives.json"},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1120-5EE42-0AA0","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/3VA1120-5EE42-0AA0 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}}