{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1120-6EF32-0BH0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1120-6EF32-0BH0","canonicalUrl":"https://aoctrl.com/siemens/3VA1120-6EF32-0BH0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1120-6EF32-0BH0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1120-6EF32-0BH0, 3-pole molded case circuit breaker, 20 A rated, 220 kA breaking capacity at 240 V AC, line protection design with undervoltage release and auxiliary switches.","salesMarkdown":"Its 220 kA breaking capacity at 240 V AC drops to 154 kA at 415 V and 121 kA at 440 V, then to 17 kA at 500 V and 690 V — the high short-circuit ratings at lower voltages make this breaker suited for high-fault service-entrance or sub-distribution positions where the available fault current exceeds what a standard 25/36 kA MCCB can handle. Thermal derating is minimal through 55 °C — the breaker holds 20 A at 40, 45, 50, and 55 °C (–) — then steps to 19 A at 60, 65, and 70 °C (–). This flat curve means the 20 A frame can be applied near its nameplate rating in warm enclosures without oversizing, a practical advantage for panel builders working to a 50 °C ambient design target. ## Auxiliary complement and release configuration The trip alarm switch (HQ) changes state only on a fault trip, not on manual open, giving the PLC or annunciator a dedicated signal for breaker trip events. The breaker includes a mechanical trip indicator for local visual confirmation of a trip condition. No ground-fault monitoring is fitted — this is a straight line-protection MCCB, not a GFPE device. The 76.2 mm width is a standard 3-pole MCCB footprint for DIN-rail or panel-mount installation — it occupies the same horizontal space as other 3VA1 frame breakers, so a panel laid out for a 3VA1110 variant accepts this unit without re-drilling the mounting plate.","metaTitle":"Siemens 3VA1120-6EF32-0BH0 SENTRON MCCB, 3P, 20A, 220 kA at","metaDescription":"Siemens SENTRON 3VA1120-6EF32-0BH0 molded case circuit breaker, 3-pole, 20 A rated, 220 kA breaking capacity at 240 V AC. Active production. Sourced to order against RFQ.","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":"Yes","Number Of Poles":"3","Voltage Trigger":"No","lifecycle_stage":"current","Product Brand Name":"SENTRON","Product Designation":"Molded case circuit breaker","Undervoltage Release":"Yes","Design Of The Product":"Line protection","Communication Function":"No","During Storage / Maximum":"80 °C","During Storage / Minimum":"-40 °C","power loss [W] / maximum":"14.5 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 + 1 trip alarm switch HQ","Design Of The Auxiliary Release":"undervoltage release (UVR)","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","Of The Integrated Auxiliary Trip Unit":"3VA9608-0BB11","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":"3","Of The Integrated Auxiliary Switch/Alarm Switch":"3VA9988-0AB12","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=64289&mlfb=3VA1120-6EF32-0BH0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1120-6EF32-0BH0/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3VA1120-6EF32-0BH0 and get a price?","answer":"This part is sourced to order against an RFQ through independent distribution. Submit a request for quote; availability and current pricing are confirmed at quote time."},{"question":"What is the breaking capacity of 3VA1120-6EF32-0BH0 at different voltages?","answer":"220 kA at 240 V AC, 154 kA at 415 V, 121 kA at 440 V, and 17 kA at both 500 V and 690 V. The high interrupting ratings at 240–440 V suit this breaker for high-fault-current service-entrance positions."},{"question":"Will 3VA1120-6EF32-0BH0 drop into a panel specified for 3VA1110-5EF32-0AM0 without rewiring?","answer":"The 76.2 mm width is the standard 3-pole 3VA1 frame footprint shared across the series, so the mounting hole pattern and bus connection spacing are identical. The 70 mm depth is also consistent. Panel layout and wiring should transfer directly — the difference is in the internal trip rating and accessories, not the physical envelope."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1120-6EF32-0BH0","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/3VA1120-6EF32-0BH0 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}}