{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SY4214-7","brand":"Siemens","brandSlug":"siemens","productSlug":"5SY4214-7","canonicalUrl":"https://aoctrl.com/siemens/5SY4214-7","factsUrl":"https://aoctrl.com/api/mcp/products/5SY4214-7","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SY4214-7 miniature circuit breaker, 2-pole, C tripping characteristic, 0.3 A rated current, 10 kA (EN 60898) / 35 kA (IEC 60947-2) breaking capacity, 2 MW units.","salesMarkdown":"The Siemens 5SY4214-7 is a 2-pole SENTRON miniature circuit breaker with a C tripping characteristic, rated at 0.3 A at AC. It carries a dual breaking capacity rating: 10 kA per IEC/EN 60898-1 for standard branch-circuit protection, and 35 kA per IEC 60947-2 / UL1077 for industrial panel applications where higher fault current is expected. That 35 kA figure is the one that matters when the breaker sits downstream of a large transformer or in a high-SCCR distribution board — the 10 kA rating is for residential or light commercial duty where the available fault current is lower. ## What the ratings mean for fit The C-curve (magnetic trip between 5 and 10 times In) makes this a good fit for moderate inrush loads like small motors, transformers, or capacitor banks — not for pure resistive heaters (B-curve territory) or high-inrush drives (D-curve). At 0.3 A, this is a low-current branch or control-circuit protector, not a main feeder breaker. Temperature derating is published: at 40 °C ambient the breaker is rated 0.28 A, at 50 °C it drops to 0.26 A, and at 60 °C it's 0.24 A. If the panel runs hot, the actual continuous current the breaker can carry without nuisance tripping is lower than the 35 °C nameplate value. The 2-pole design (2 MW, 36 mm wide) protects both line and neutral in single-phase circuits, or two phases in three-phase control circuits. It snaps onto a DIN rail via the quick-assembly system and can be mounted in any position — useful when panel layout is tight and the rail is vertical. IP20 with connected conductors means it's protected against finger contact but not against moisture — standard for enclosed distribution boards. Pollution degree 3 (conductive pollution or dry non-conductive pollution that becomes conductive due to condensation) is typical for industrial control panels. ## Panel integration notes Depth is 76 mm, width 36 mm (2 modular units), height 90 mm. Installation depth (behind the panel face) is 70 mm. Combined top and bottom terminals accept the same conductor range — no special ordering for line vs. load side. Sealable, halogen-free, silicon-free. Rated for ambient temperatures from -40 °C to 75 °C, which covers unheated electrical rooms and outdoor-rated enclosures in most climates. The storage temperature range is wider than the operating range — the -40 °C low end is a storage/survival spec, not a switching spec at that temperature.","metaTitle":"Siemens 5SY4214-7 SENTRON MCB, 2P C 0.3A, 10kA/35kA","metaDescription":"Siemens 5SY4214-7 SENTRON miniature circuit breaker, 2-pole, C-curve, 0.3 A rated. Dual-rated 10 kA (EN 60898) / 35 kA (IEC 60947-2). Current production. Quoted to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["2-Pole MCB (DIN Rail)"],"specifications":{"Depth":"76 mm","Width":"36 mm","title":"5SY4214-7","Height":"90 mm","Maximum":"75 °C","Minimum":"-40 °C","Sealable":"Yes","Standard":"IEC / EN 60898-1, IEC / EN 60947-2 / UL1077","description":"Miniature circuit breaker 400 V 10kA, 2-pole, C, 0.3A, D=70 mm","Halogen-Free":"Yes","Silicon-Free":"Yes","Design Of Pole":"2P","Number Of Poles":"2","lifecycle_stage":"current","Fastening Method":"Quick assembly system","Mounting Position":"any","Installation Depth":"70 mm","Product Brand Name":"SENTRON","Degree Of Pollution":"3","Product Designation":"Miniature circuit breaker","acc. to IEC 81346-2":"F","at AC / rated value":"0.3 A","protection class IP":"IP20, with connected conductors","Overvoltage Category":"III","Combined Terminal Top":"Yes","acc. to DIN EN 61346-2":"F","Energy Limitation Class":"3","at 35 °C / rated value":"0.3 A","at 40 °C / rated value":"0.28 A","at 45 °C / rated value":"0.27 A","at 50 °C / rated value":"0.26 A","at 55 °C / rated value":"0.25 A","at 60 °C / rated value":"0.24 A","Combined Terminal Bottom":"Yes","Suitability For Operation":"Mechanical engineering / industry","Number Of Modular Width Units":"2","Tripping Characteristic Class":"C","acc. to EN 60898 / rated value":"10 kA","Position / Of Power Supply Cord":"Any","acc. to IEC 60947-2 / rated value":"35 kA","Product Feature / Touch Protection":"Yes","Influence Of The Surrounding Temperature":"max. 95% to 55°C, max. 55% to 70°C, max. 35% to 75°C","at DC / acc. to IEC 60947-2 / rated value":"15 kA","Type Of Voltage / Of The Operating Voltage":"AC","at AC / acc. to UL 1077 and CSA C22.2 No.235":"5 kA","vibration resistance / acc. to IEC 60068-2-6":"±1mm at 5 to 25Hz; 50m/s² at 25 to 150Hz","Product Component / Neutral Conductor Switching":"No","with multi-phase operation / at AC / rated value":"440 V","operating voltage / at DC / rated value / maximum":"72 V","with single-phase operation / at AC / rated value":"440 V","Mechanical Service Life (Switching Cycles) / Typical":"10 000"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/e583e05edf7b76880b71d6c4d3800187.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=363711&mlfb=5SY4214-7"},"ai":{"faq":[{"question":"What is the breaking capacity of 5SY4214-7?","answer":"Dual-rated: 10 kA per IEC/EN 60898-1 and 35 kA per IEC 60947-2 / UL1077. The 35 kA rating applies when the breaker is used under the industrial standard."},{"question":"What compliance documentation does Siemens provide for 5SY4214-7?","answer":"The breaker is certified to IEC/EN 60898-1 and IEC/EN 60947-2 / UL1077. It is halogen-free and silicon-free. Standard RoHS and REACH declarations are available from Siemens for the SENTRON series."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SY4214-7","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/5SY4214-7 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:51:03.652Z","lastPublished":"2026-08-11T15:51:03.652Z","indexable":true}}