{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1120-5EF32-0KH0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1120-5EF32-0KH0","canonicalUrl":"https://aoctrl.com/siemens/3VA1120-5EF32-0KH0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1120-5EF32-0KH0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1120-5EF32-0KH0, molded case circuit breaker, line protection, 3-pole, 20 A rated continuous current, TM240 thermal-magnetic release, shunt trip STL, 187 kA at 240 V, IP40 front.","salesMarkdown":"The interrupting capacity tells you where it can safely clear a fault: 187 kA at 240 V, 121 kA at 415 V, 75.6 kA at 440 V, and 17 kA at 690 V — that's the kind of muscle you need on a high-fault panelboard or a motor control center feed, not a branch breaker. The shunt trip (STL) auxiliary release lets you trip it remotely via a control signal, which is handy for emergency-stop circuits or interlocking schemes. ## Thermal derating — the number that actually governs your load in a warm cabinet At 55 °C it steps down to 19.2 A, then 18.8 A at 60 °C, 18.4 A at 65 °C, and 18 A at 70 °C. ## Auxiliary contacts and trip accessories The integrated auxiliary trip is order code 3VA9688-0BL33, which is the shunt trip coil you wire to your control voltage.","metaTitle":"Siemens SENTRON 3VA1120-5EF32-0KH0 MCCB, 20 A, 3-Pole, 187 k","metaDescription":"Siemens SENTRON 3VA1120-5EF32-0KH0 molded case circuit breaker, 20 A rated continuous current, 3-pole, 187 kA interrupting at 240 V. TM240 release, shunt trip. Current production,","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":"187 kA","at 415 V":"121 kA","at 440 V":"75.6 kA","at 690 V":"17 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":"3VA9688-0BL33","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":"M","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=249874&mlfb=3VA1120-5EF32-0KH0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1120-5EF32-0KH0/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3VA1120-5EF32-0KH0 and how do I get a price?","answer":"This part is sourced to order through independent distribution. Submit an RFQ for current availability and pricing; figures are confirmed at quote time."},{"question":"What is the closest functional second-source — 3VA1110-5EE32-0JA0?","answer":"The 3VA1110-5EE32-0JA0 is a lower-current sibling in the same 3VA platform. Check the interrupting ratings and auxiliary-contact configuration against your BOM; the frame size and mounting footprint are shared, so it drops into the same panel cutout if the electrical ratings match your load."},{"question":"Will 3VA1120-5EF32-0KH0 drop into a panel specified around 3VA1110-5EE32-0JA0 without rewiring?","answer":"Both share the same 3VA frame and mounting pattern, so the physical swap is straightforward — same panel cutout, same DIN-rail clip. Verify the 20 A continuous rating and the interrupting capacity at your system voltage against the original specification; the shunt trip and auxiliary contact wiring are identical."},{"question":"What compliance documentation does this brand provide?","answer":"The SENTRON 3VA series carries UL, CSA, and IEC certifications typical for panelboard and MCCB applications. RoHS and REACH declarations are available from Siemens' documentation portal. The reference code per DIN EN 81346-2 is Q."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1120-5EF32-0KH0","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/3VA1120-5EF32-0KH0 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}}