{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1120-5EF36-0JH0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1120-5EF36-0JH0","canonicalUrl":"https://aoctrl.com/siemens/3VA1120-5EF36-0JH0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1120-5EF36-0JH0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON series, molded case circuit breaker, 3VA1120-5EF36-0JH0, 3-pole, 20 A rated current, 187 kA breaking capacity at 240 V AC.","salesMarkdown":"Its headline number is the interrupting capacity: 187 kA at 240 V AC, dropping to 121 kA at 415 V, 75.6 kA at 440 V, and holding at 17 kA at both 500 V and 690 V. That curve tells you the breaker is built for high-fault locations — main distribution boards, transformer secondaries, or industrial feeds where prospective short-circuit current can exceed 100 kA. The 20 A rating holds flat from 40 °C through 55 °C, then derates to 19 A at 60 °C through 70 °C. In a warm enclosure — say 55 °C ambient — you still get the full 20 A; above that, budget the 1 A derate. ## Panel fit and footprint The 3VA1120-5EF36-0JH0 measures 76.2 mm wide, 130 mm tall, and 70 mm deep. If you are replacing a unit in an existing panel, check the busbar stack height; the supplied basic switch is order code 3VA11205EF360AA0, which is the internal mechanism — the complete breaker ships as the -0JH0 variant with the shunt trip and aux switches pre-installed.","metaTitle":"Siemens 3VA1120-5EF36-0JH0 SENTRON MCCB, 20A, 3-Pole, 187kA","metaDescription":"Siemens SENTRON 3VA1120-5EF36-0JH0 molded case circuit breaker, 20A rated, 3-pole, 187kA breaking capacity at 240V. Current production, sourced to order. RFQ for pricing.","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":"187 kA","at 415 V":"121 kA","at 440 V":"75.6 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":"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":"3VA11205EF360AA0","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":"M","Mechanical Service Life (Operating Cycles) / Typical":"20 000","Type Of Electrical Connection / For Main Current Circuit":"box terminal on both sides","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=134198&mlfb=3VA1120-5EF36-0JH0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1120-5EF36-0JH0/alternatives.json"},"ai":{"faq":[{"question":"How do I get current pricing and availability for 3VA1120-5EF36-0JH0?","answer":"Submit an RFQ through this listing. Pricing and stock levels are confirmed at quote time through our independent distribution channels — we do not publish live figures on the page."},{"question":"What is 3VA1120-5EF36-0JH0's breaking capacity at 240 V?","answer":"187 kA at 240 V AC. At 415 V it is 121 kA, at 440 V it is 75.6 kA, and at 500 V and 690 V it is 17 kA."},{"question":"Will 3VA1120-5EF36-0JH0 drop into a panel specified around 3VA1110-5ED36-0AC0?","answer":"Footprint is the same — both are 3-pole SENTRON MCCBs on the same 76.2 mm wide, 130 mm tall, 70 mm deep frame. The 3VA1120 variant carries higher interrupting capacity (187 kA vs the 1110's lower rating) and adds the shunt trip and dual aux switches. If the panel busbars and enclosure depth accommodate the same frame, it fits mechanically. Verify the terminal arrangement and accessory wiring against the existing cutout."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1120-5EF36-0JH0","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/3VA1120-5EF36-0JH0 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}}