{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1140-4EF32-0JH0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1140-4EF32-0JH0","canonicalUrl":"https://aoctrl.com/siemens/3VA1140-4EF32-0JH0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1140-4EF32-0JH0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1140-4EF32-0JH0, molded case circuit breaker, 3-pole, 40 A at 40 °C, interrupting rating 121 kA at 240 V, line protection design.","salesMarkdown":"It's a 3-pole unit rated 40 A continuous at 40 °C, and it holds that rating all the way to 50 °C before it starts to derate: 39 A at 55 °C, 38 A at 65 °C, 37 A at 70 °C. That thermal stability means you don't lose headroom in a warm enclosure. The interrupting rating is where this breaker earns its keep: 121 kA at 240 V, 75.6 kA at 415 V, 52.5 kA at 440 V, and still 11.9 kA at 690 V. That's a high-fault-current design — sized for a main breaker position where the utility transformer can dump serious energy into a bolted fault. ## Auxiliary and shunt trip configuration That's the '4EF32' part of the order code — the shunt trip lets a remote signal (emergency stop, fire alarm, PLC interlock) open the breaker without anyone pulling the handle. The trip alarm switch closes when the breaker trips on fault, so a panel PLC or annunciator sees the event. No undervoltage release on this unit, and no ground-fault monitoring module. If you need UVR or GF protection, you'd step to a different suffix in the 3VA family. The auxiliary switches are wired via the standard SENTRON terminal block — same footprint as the base breaker.","metaTitle":"Siemens 3VA1140-4EF32-0JH0 SENTRON MCCB, 40A 3-Pole, 121kA I","metaDescription":"Siemens SENTRON 3VA1140-4EF32-0JH0 molded case circuit breaker. 40A rated at 40°C, 3-pole, 121kA interrupting at 240V. Current lifecycle. Available to order via 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":"121 kA","at 415 V":"75.6 kA","at 440 V":"52.5 kA","at 500 V":"11.9 kA","at 690 V":"11.9 kA","at 40 °C":"40 A","at 45 °C":"40 A","at 50 °C":"40 A","at 55 °C":"39 A","at 60 °C":"39 A","at 65 °C":"38 A","at 70 °C":"37 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":"10.8 W","During Operation / Maximum":"70 °C","During Operation / Minimum":"-25 °C","Other Measurement Function":"No","Of The Supplied Basic Switch":"3VA11404EF320AA0","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":"S","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=454603&mlfb=3VA1140-4EF32-0JH0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1140-4EF32-0JH0/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3VA1140-4EF32-0JH0 and how do I get a price?","answer":"This part is sourced to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm price and lead time."},{"question":"What is 3VA1140-4EF32-0JH0's interrupting rating at 240 V?","answer":"It's rated 121 kA at 240 V, which places it in the high-fault-current class for main breaker applications. At 415 V it's 75.6 kA, and at 690 V it's 11.9 kA."},{"question":"Will 3VA1140-4EF32-0JH0 drop into a panel specified around 3VA1110-5ED36-0AC0 without rewiring?","answer":"Both are 3VA1 frame size breakers with the same mounting footprint (70 mm deep, 76.2 mm wide, 130 mm tall) and the same DIN-rail or screw-mount pattern. The physical swap is straightforward, but verify the load current — the 3VA1110 is a lower-amp variant. The auxiliary and shunt trip wiring may differ because the 3VA1110-5ED36-0AC0 does not include the same shunt trip and auxiliary switch configuration."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1140-4EF32-0JH0","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/3VA1140-4EF32-0JH0 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}}