{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1120-3EF32-0HH0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1120-3EF32-0HH0","canonicalUrl":"https://aoctrl.com/siemens/3VA1120-3EF32-0HH0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1120-3EF32-0HH0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1120-3EF32-0HH0, molded case circuit breaker, 3-pole, 20 A rated continuous current Iu, TM240 thermal-magnetic overcurrent release, breaking capacity 75.6 kA at 240 V.","salesMarkdown":"It breaks 75.6 kA at 240 V, 52.5 kA at 415 V, 32 kA at 440 V, and 10.5 kA at 690 V — numbers that tell you the SCCR headroom you've got for the fault-current study on your distribution board. This is a line-protection breaker (not a motor-protection or ground-fault version), so it's the right call for feeder circuits, panel mains, and branch protection where you need a thermal-magnetic curve and no communication or phase-failure logic inside the case. ## Temperature derating — the real-world current you can count on At 55 °C it drops to 19.2 A, at 60 °C to 18.8 A, at 65 °C to 18.4 A, and at 70 °C to 18 A. If your panel sits near a kiln or a hot drive cabinet, size the load at the ambient you actually see — not the 40 °C number on the nameplate. ## Panel footprint and auxiliary contacts The breaker measures 76.2 mm wide, 130 mm high, and 70 mm deep — a standard 3-pole MCCB footprint that drops into SENTRON mounting bases and busbar systems without adapters. That means you get remote trip capability and status feedback without adding an external module.","metaTitle":"Siemens 3VA1120-3EF32-0HH0 SENTRON MCCB, 20 A, 3-Pole, 75.6","metaDescription":"Siemens SENTRON 3VA1120-3EF32-0HH0 molded case circuit breaker, 20 A rated, 3-pole, TM240 release, breaking capacity 75.6 kA at 240 V. Active production, sourced to order against R","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","at 240 V":"75.6 kA","at 415 V":"52.5 kA","at 440 V":"32 kA","at 690 V":"10.5 kA","at 40 °C":"20 A","at 45 °C":"20 A","at 50 °C":"20 A","at 55 °C":"19.2 A","at 60 °C":"18.8 A","at 65 °C":"18.4 A","at 70 °C":"18 A","Trip indicator":"Yes","Number of poles":"3","Product version":"Line protection","Voltage trigger":"Yes","lifecycle_stage":"current","Product brand name":"SENTRON","Product designation":"Molded case circuit breaker","Latching - endurance":"15 000","Undervoltage Release":"No","Communication Function":"No","Phase failure detection":"No","During Storage / Maximum":"80 °C","During Storage / Minimum":"-40 °C","Auxiliary contact version":"2 auxiliary switches + 1 trip alarm switch HQ","During Operation / Maximum":"70 °C","During Operation / Minimum":"-25 °C","Other Measurement Function":"No","Rated continuous current Iu":"20 A","Rated insulation voltage Ui":"800 V","Design of the auxiliary release":"Shunt trip (STL)","Ground fault monitoring version":"Without","Of The Integrated Auxiliary Trip":"3VA9688-0BL30","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","Reference code / acc. to DIN EN 81346-2":"Q","Adjustable response value time / tr max.":"1","Adjustable response value time / tr min.":"1","Max. rated operational voltage Ue with DC":"500 V","Undervoltage Release With Leading Contact":"No","Product extension / optional / motor drive":"Yes","Adjustable response value current / Ir max.":"20 A","Adjustable response value current / li max.":"320 A","Adjustable response value current / li min.":"160 A","Adjustable response value current / lr min.":"14 A","Neutral conductors / upgradeable/retrofittable":"No","Number of CO contacts / for auxiliary contacts":"3","Protective function of the overcurrent release":"LI","Of The Integrated Auxiliary Switch/Alarm Switch":"3VA9988-0AB12","Switching capacity class of the circuit breaker":"N","Max. rated operational current of the frame size":"160 A","Max. rated operational voltage Ue with AC 50/60Hz":"690 V","Type of electrical connection / for main current circuit":"lug terminal","Arrangement of electrical connectors / for main current circuit":"Front terminal","Type of connectable conductor cross-section, connection screw, width x thickness , max.":"17 x 6.5","Type of connectable conductor cross-section, connection screw, width x thickness , min.":"12 x 0"}},"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=348611&mlfb=3VA1120-3EF32-0HH0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1120-3EF32-0HH0/alternatives.json"},"ai":{"faq":[{"question":"How do I get current pricing and availability for 3VA1120-3EF32-0HH0?","answer":"Submit an RFQ through this listing. Pricing and stock are confirmed at quote time; the part is sourced through independent distribution channels."},{"question":"What is 3VA1120-3EF32-0HH0's listed depth and width?","answer":"Depth is 70 mm, width is 76.2 mm, height is 130 mm — standard 3-pole MCCB dimensions that fit SENTRON panel mounting systems."},{"question":"What compliance documentation does Siemens provide for this MCCB?","answer":"The SENTRON 3VA series carries UL, CSA, and IEC certifications standard for the class. Specific RoHS and REACH declarations are available from Siemens upon request."},{"question":"Will 3VA1120-3EF32-0HH0 drop into a panel specified around 3VA1110-5EE32-0JA0 without rewiring?","answer":"Both are 3-pole SENTRON MCCBs with the same 76.2 mm width and 70 mm depth footprint, so they share the same mounting base and busbar spacing. The 3VA1110-5EE32-0JA0 is a 100 A frame with an electronic release; this 20 A unit uses a TM240 thermal-magnetic release. Mechanical fit is the same, but the protection curve and continuous rating differ — verify the load's fault-current and ampacity requirements before swapping."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1120-3EF32-0HH0","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/3VA1120-3EF32-0HH0 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}}