{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1020-3ED36-0JC0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1020-3ED36-0JC0","canonicalUrl":"https://aoctrl.com/siemens/3VA1020-3ED36-0JC0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1020-3ED36-0JC0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1020-3ED36-0JC0, molded case circuit breaker, 3-pole, 20 A, breaking capacity 75.6 kA at 240 V AC, line protection design, shunt trip release, 2 auxiliary switches HQ.","salesMarkdown":"## 20 A MCCB with 75.6 kA breaking capacity — line protection for distribution panels The Siemens SENTRON 3VA1020-3ED36-0JC0 is a 3-pole molded case circuit breaker rated 20 A continuous at 40 °C, designed for line protection in power distribution. Its breaking capacity hits 75.6 kA at 240 V AC, dropping to 52.5 kA at 415 V and 7.5 kA at 690 V — so it handles high fault currents on the secondary side of a distribution transformer without cascading upstream. The 70 mm depth and 76.2 mm width fit standard panel cutouts, and the included shunt trip (STL) plus two HQ auxiliary switches give you remote trip and status feedback without adding external modules. ## Rated current holds flat across the panel ambient range The 20 A rating is continuous at ambient temperatures from 40 °C through 55 °C — no derating needed in a warm enclosure. At 60 °C it still holds 19 A, and at 70 °C it holds 19 A. That gives you headroom in a crowded panel where internal temperature runs 10–15 °C above room ambient. ## Breaking capacity by voltage — selectivity planning The 75.6 kA at 240 V is the headline number, but the real-world selectivity decision happens at the system voltage. At 415 V it breaks 52.5 kA, at 440 V it drops to 32 kA, and at 500 V and 690 V it holds at 7.5 kA. If your fault current at the panelboard exceeds 32 kA at 440 V, you need an upstream current-limiting fuse or a higher-rated MCCB. The 7.5 kA at 690 V is typical for a downstream feeder breaker in a 690 V drive system — adequate for most motor branch circuits. The breaker measures 130 mm tall, 76.2 mm wide, and 70 mm deep. The 76.2 mm width is a standard 3-pole MCCB footprint — it fits the same DIN-rail or panel-mount cutout as other SENTRON 3VA1-frame breakers. Depth of 70 mm leaves room behind the panel door for wiring and the shunt trip coil. Maximum power loss is 12 W, so heat dissipation in a sealed enclosure is manageable.","metaTitle":"Siemens SENTRON 3VA1020-3ED36-0JC0 MCCB, 20 A, 3-Pole, 75.6","metaDescription":"Siemens SENTRON 3VA1020-3ED36-0JC0 molded case circuit breaker, 20 A, 3-pole, breaking capacity 75.6 kA at 240 V. Current production. Available to order; confirm pricing and lead t","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":"7.5 kA","at 690 V":"7.5 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":"No","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":"3VA10203ED360AA0","Design Of The Auxiliary Switch":"2 auxiliary switches 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":"TM210","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":"No","Protection Function Of The Overcurrent Release":"LI","number of CO contacts / for auxiliary contacts":"2","Of The Integrated Auxiliary Switch/Alarm Switch":"3VA9988-0AA12","Switching Capacity Class Of The Circuit Breaker":"N","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=356168&mlfb=3VA1020-3ED36-0JC0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1020-3ED36-0JC0/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3VA1020-3ED36-0JC0 and what is the lead time?","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 lead time."},{"question":"Will 3VA1020-3ED36-0JC0 drop into a panel specified for 3VA1020-3ED36-0AA0 without rewiring?","answer":"Both breakers share the same 3VA1 frame dimensions (130 mm height, 76.2 mm width, 70 mm depth) and 3-pole configuration, so the physical fit and bus-bar spacing are identical. The -0JC0 variant adds a shunt trip (STL) and two HQ auxiliary switches, which require additional control wiring if those functions are used. If the -0AA0 had no auxiliary release, the panel wiring for the shunt trip must be added; the power circuit wiring is a direct swap."},{"question":"What is the breaking capacity of this MCCB at 415 V?","answer":"At 415 V AC the breaking capacity is 52.5 kA. This is sufficient for most industrial distribution panels where the transformer secondary fault current is below that threshold."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1020-3ED36-0JC0","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/3VA1020-3ED36-0JC0 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}}