{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SJ6216-7","brand":"Siemens","brandSlug":"siemens","productSlug":"5SJ6216-7","canonicalUrl":"https://aoctrl.com/siemens/5SJ6216-7","factsUrl":"https://aoctrl.com/api/mcp/products/5SJ6216-7","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SJ6, miniature circuit breaker, 2-pole, C-curve, 16 A, 6 kA, 400 V AC, 70 mm depth.","salesMarkdown":"The Siemens 5SJ6216-7 is a SENTRON 5SJ6 miniature circuit breaker (MCB) rated 16 A at 400 V AC with a C-curve trip characteristic, 2-pole construction, and a 6 kA breaking capacity certified to both EN 60898 and IEC 60947-2. The 16 A rated current at 400 V AC sets the continuous load limit per pole. For a 2-pole breaker on a single-phase line-to-line load (e.g., a 230 V or 400 V split-phase circuit), the full 16 A is available per pole. The C-curve is the deciding factor for selectivity with downstream branch breakers — it holds through motor starting surges up to about 80 A peak (5× In) before the magnetic trip operates, so it coordinates well with B-curve final subcircuits. The DC rating is 60 V maximum, so this 2-pole unit can be used for a single DC circuit up to 60 V with both poles in series for positive isolation. The mechanical service life is 20 000 switching cycles typical — adequate for panel disconnecting duty but not for frequent switching applications like motor starting contactors. Overvoltage category 3 and pollution degree 2 confirm it is rated for fixed-installation distribution boards within a controlled environment. ## Drop-In Fit vs. 5SJ6216-6 The only difference between the 5SJ6216-7 (C-curve) and the 5SJ6216-6 (B-curve) is the trip characteristic. Both are 2-pole, 16 A, 6 kA, 400 V, 70 mm depth, 2 MW, same halogen-free/silicon-free construction, same terminal capacity, same mounting position. A panel wired for the B-curve variant accepts the C-curve without any rewiring or mechanical change — the decision is purely about the inrush profile of the downstream load. For moderate inrush (small motors, transformers), the C-curve is correct; for purely resistive or electronic loads where tighter overcurrent protection is preferred, the B-curve fits.","metaTitle":"Siemens 5SJ6216-7 SENTRON MCB, 2-Pole C 16A 6kA","metaDescription":"Siemens 5SJ6216-7 SENTRON miniature circuit breaker, 2-pole, C-curve, 16 A, 6 kA breaking capacity per EN 60898 / IEC 60947-2, 400 V AC. Current lifecycle stage. Available to order","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["2-Pole MCB (DIN Rail)"],"specifications":{"Maximum":"75 °C","Minimum":"-40 °C","Sealable":"Yes","Rated Value":"50 Hz","Halogen-Free":"Yes","Silicon-Free":"Yes","Number Of Poles":"2","Type Of Voltage":"AC/DC","lifecycle_stage":"current","Mounting Position":"any","Installation Depth":"70 mm","Product Brand Name":"SENTRON","Degree Of Pollution":"2","Product Designation":"Miniature circuit breakers","protection class IP":"IP20, with connected conductors","Overvoltage Category":"3","Design Of The Product":"Miniature circuit breaker 5SJ6","Number Of Poles / Note":"2","Energy Limitation Class":"3","Number Of Modular Width Units":"2","Tripping Characteristic Class":"C","at DC / rated value / maximum":"60 V","acc. to EN 60898 / rated value":"6 kA","Position / Of Power Supply Cord":"Any","acc. to IEC 60947-2 / rated value":"6 kA","Product Feature / Touch Protection":"Yes","supply voltage / at AC / rated value":"400 V","Influence Of The Surrounding Temperature":"Periodically +55°C, max. 95% humidity","insulation voltage / at AC / rated value":"440 V","operational current / at AC / rated value":"16 A","vibration resistance / acc. to IEC 60068-2-6":"50m/s² at 25 to 150Hz and 60m/s² at 10 to 150 Hz","with multi-phase operation / at AC / maximum":"440 V","Mechanical Service Life (Switching Cycles) / Typical":"20 000"}},"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=186830&mlfb=5SJ6216-7","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SJ6216-7/alternatives.json"},"ai":{"faq":[{"question":"Will 5SJ6216-7 drop into a panel wired for 5SJ6216-6?","answer":"Yes, the two breakers share the same mechanical footprint, terminal capacity, 2-pole 2 MW DIN-rail layout, and 70 mm depth. The only difference is the trip curve — C versus B — so no rewiring is needed."},{"question":"What is the breaking capacity of 5SJ6216-7?","answer":"It is rated 6 kA per both EN 60898 and IEC 60947-2 at 400 V AC, which is the standard interrupting rating for this class of miniature circuit breaker in sub-distribution boards."},{"question":"Where can I buy 5SJ6216-7?","answer":"This part is sourced and quoted to order against an RFQ through independent industrial distribution. Availability and current pricing are confirmed at quote time."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SJ6216-7","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/5SJ6216-7 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}}