{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1120-3EF32-0JH0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1120-3EF32-0JH0","canonicalUrl":"https://aoctrl.com/siemens/3VA1120-3EF32-0JH0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1120-3EF32-0JH0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1120-3EF32-0JH0, 3-pole molded case circuit breaker for line protection, 20 A rated current, 75.6 kA interrupting capacity at 240 V, with shunt trip and auxiliary switches.","salesMarkdown":"It carries a 20 A continuous rating across the 40 °C to 55 °C band, derating to 19 A at 60 °C and above — a thermal curve that suits lightly loaded feeders in ventilated enclosures. Its interrupting capacity reaches 75.6 kA at 240 V, 52.5 kA at 415 V, and 32 kA at 440 V, with 11.9 kA holding at both 500 V and 690 V. That SCCR range covers most industrial service-entrance and sub-feed applications; the 690 V rating is useful for 600 V class Canadian or mining panels. ## Integrated accessories for control wiring This avoids separate accessory mounting and wiring in the panel — the shunt trip allows remote tripping from an E-stop or PLC output, while the alarm switch signals a fault condition back to the control system. No undervoltage release is fitted, so the breaker holds in without a separate coil-monitoring circuit. The SENTRON 3VA series carries IEC/EN 60947-2 certification for molded case circuit breakers. The manufacturer provides CE, UKCA, and EAC declarations, plus RoHS and REACH compliance statements with the product documentation package. No integrated communication function — this is a standalone thermal-magnetic breaker, not a power-metering or networked device.","metaTitle":"Siemens 3VA1120-3EF32-0JH0 SENTRON MCCB, 20 A, 3-Pole, 75.6","metaDescription":"Siemens SENTRON 3VA1120-3EF32-0JH0 3-pole molded case circuit breaker, 20 A rated at 40-55 °C, 75.6 kA interrupting at 240 V. Line protection, shunt trip, auxiliary switches. Curre","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":"75.6 kA","at 415 V":"52.5 kA","at 440 V":"32 kA","at 500 V":"11.9 kA","at 690 V":"11.9 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":"Yes","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":"3VA11203EF320AA0","Design Of The Auxiliary Switch":"2 auxiliary switches + 1 trip alarm switch HQ","Design Of The Auxiliary Release":"shunt trip (STL)","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":"3VA9688-0BL32","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":"N","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=271070&mlfb=3VA1120-3EF32-0JH0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1120-3EF32-0JH0/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy the 3VA1120-3EF32-0JH0 and what is the lead time?","answer":"This MCCB is sourced and quoted to order against an RFQ through independent distribution channels. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm delivery commitment."},{"question":"What is the interrupting capacity of the 3VA1120-3EF32-0JH0 at different voltages?","answer":"75.6 kA at 240 V, 52.5 kA at 415 V, 32 kA at 440 V, and 11.9 kA at both 500 V and 690 V."},{"question":"Will the 3VA1120-3EF32-0JH0 drop into a panel specified for the 3VA1110-5EF32-0AM0?","answer":"Yes — the 70 mm depth, 76.2 mm width, and 130 mm height are identical, so the mechanical footprint and mounting hole pattern match. The wiring difference is in the accessory circuit: this unit carries a shunt trip and 2 auxiliary + 1 alarm switch, which the 3VA1110 may not. Verify the control wiring scheme before swapping."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1120-3EF32-0JH0","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/3VA1120-3EF32-0JH0 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}}