{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1120-5EF32-0JC0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1120-5EF32-0JC0","canonicalUrl":"https://aoctrl.com/siemens/3VA1120-5EF32-0JC0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1120-5EF32-0JC0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1120-5EF32-0JC0, molded case circuit breaker, 3-pole, line protection, rated continuous current Iu 20 A, TM240 overcurrent release, breaking capacity 187 kA at 240 V.","salesMarkdown":"## Siemens 3VA1120-5EF32-0JC0 — SENTRON 3VA Molded Case Circuit Breaker, 20 A, 187 kA IC at 240 V Its interrupting capacity reaches 187 kA at 240 V, 121 kA at 415 V, 75.6 kA at 440 V, and 17 kA at 690 V — figures that govern selectivity and SCCR coordination in a distribution panel. Above that, derating applies linearly: 19.2 A at 55 °C, 18.8 A at 60 °C, 18.4 A at 65 °C, and 18 A at 70 °C. For panel builders, this means the 20 A frame can be used in a 50 °C ambient without downsizing the circuit; above that, the load current must be adjusted per the published curve. ## Integrated accessories and auxiliary circuits The auxiliary release design is specified as 3VA9688-0BL32. The breaker does not include undervoltage release, phase failure detection, ground fault monitoring, or communication functions — it is a straightforward line-protection device with basic remote-trip and contact-signal capability. ## Mechanical and environmental ratings Dimensions: 130 mm height, 76.2 mm width, 70 mm depth — fits standard 3-pole MCCB panel cutouts. Front protection is IP40.","metaTitle":"Siemens 3VA1120-5EF32-0JC0 SENTRON MCCB, 20 A, 187 kA at 240","metaDescription":"Siemens 3VA1120-5EF32-0JC0 SENTRON molded case circuit breaker, 3-pole, 20 A rated, TM240 release, 187 kA breaking capacity at 240 V. Current lifecycle stage. 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","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":"No","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 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":"3VA9688-0BL32","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":"2","Protective function of the overcurrent release":"LI","Of The Integrated Auxiliary Switch/Alarm Switch":"3VA9988-0AA12","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=486787&mlfb=3VA1120-5EF32-0JC0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1120-5EF32-0JC0/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3VA1120-5EF32-0JC0 and how is it quoted?","answer":"This part is sourced and quoted to order through independent distribution channels. Submit an RFQ for current pricing and availability confirmation."},{"question":"What are the key ratings of 3VA1120-5EF32-0JC0?","answer":"Rated continuous current Iu 20 A, 3-pole, TM240 thermal-magnetic release, interrupting capacity 187 kA at 240 V, 121 kA at 415 V, 75.6 kA at 440 V, and 17 kA at 690 V. Rated insulation voltage Ui 800 V."},{"question":"What compliance documentation is available for 3VA1120-5EF32-0JC0?","answer":"As a SENTRON product, it is designed to meet applicable IEC and UL standards for molded case circuit breakers. Specific certificates (UL, CSA, CE, RoHS, REACH) should be verified against the manufacturer's documentation portal for the exact order code."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1120-5EF32-0JC0","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/3VA1120-5EF32-0JC0 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}}