{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1120-6EF32-0AC0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1120-6EF32-0AC0","canonicalUrl":"https://aoctrl.com/siemens/3VA1120-6EF32-0AC0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1120-6EF32-0AC0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1120-6EF32-0AC0, molded case circuit breaker, 3-pole, 20 A, TM240 thermal-magnetic release, 220 kA at 240 VAC, line protection.","salesMarkdown":"It's a 3-pole unit rated 20 A continuous, and it holds that rating from 40 °C all the way up to 55 °C before it starts to derate; at 60 °C it's still good for 19 A, and at 70 °C it's 19 A. That thermal stability matters out here in the grease where panel ambient temps climb in summer. Breaking capacity is the headline number on this one: 220 kA at 240 VAC, 154 kA at 415 VAC, 121 kA at 440 VAC, and it still holds 17 kA at 690 VAC. That's a high-interrupting rating for a 20 A frame — it'll clear a hard fault without the arc flashing over, which is what you need when the upstream transformer is a big one. ## Thermal-magnetic release and auxiliary contacts That's a workhorse design: bimetal for overload, solenoid for short circuit. If you need remote trip or status feedback, the breaker ships with two HQ auxiliary switches (form C) wired in. The basic switch variant is 3VA11206EF320AA0, which is the core mechanism this breaker is assembled on. Power loss at full rated current maxes out at 12 W. The case measures 130 mm tall, 76.2 mm wide, 70 mm deep — that's a standard 3-pole MCCB footprint for the SENTRON 3VA1 frame. It'll drop into a panel that was laid out for a 3VA1110 or other 3VA1-series breaker without rewiring the bus bars, as long as the mounting holes and lug centers match the existing drill pattern.","metaTitle":"Siemens 3VA1120-6EF32-0AC0 SENTRON MCCB, 20 A, 3-Pole, 220 k","metaDescription":"Siemens 3VA1120-6EF32-0AC0 SENTRON molded case circuit breaker, 20 A, 3-pole, TM240 release, 220 kA breaking capacity at 240 VAC. 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":"220 kA","at 415 V":"154 kA","at 440 V":"121 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","Of The Supplied Basic Switch":"3VA11206EF320AA0","Design Of The Auxiliary Switch":"2 auxiliary switches 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":"2","Of The Integrated Auxiliary Switch/Alarm Switch":"3VA9988-0AA12","Switching Capacity Class Of The Circuit Breaker":"H","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=134293&mlfb=3VA1120-6EF32-0AC0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1120-6EF32-0AC0/alternatives.json"},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1120-6EF32-0AC0","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/3VA1120-6EF32-0AC0 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}}