{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SY4301-7CV","brand":"Siemens","brandSlug":"siemens","productSlug":"5SY4301-7CV","canonicalUrl":"https://aoctrl.com/siemens/5SY4301-7CV","factsUrl":"https://aoctrl.com/api/mcp/products/5SY4301-7CV","rawCanonicalId":null},"summary":{"shortDescription":"Siemens 5SY4301-7CV, 3-pole miniature circuit breaker, C-curve, 1 A rated, 15 kA breaking capacity per IEC 60947-2, 3 MWU, depth 76 mm, width 54 mm, height 90 mm.","salesMarkdown":"## What it is and what it does The Siemens 5SY4301-7CV is a 3-pole miniature circuit breaker (MCB) with a C tripping characteristic, rated 1 A at 35 °C and 50/60 Hz AC. It is designed for branch-circuit protection in industrial control panels and mechanical engineering applications, per IEC / EN 60947-2. The 15 kA breaking capacity at 440 V AC means it can safely interrupt a fault current up to that level without upstream damage — sized for high-fault installations like machine-tool feeders or distribution sub-panels. ## Mounting and panel fit Snaps onto DIN rail via the quick-assembly system; mounting position any, so it fits vertical or horizontal bus runs. Occupies 3 modular width units (MWU), each 18 mm — total 54 mm wide. Depth 76 mm (installation depth 70 mm) leaves clearance for wiring behind the gland plate. Combined terminals top and bottom accept supply from either end. ## Thermal derating and environment Rated 1 A at 35 °C; derates to 0.93 A at 40 °C, 0.89 A at 45 °C, and 0.8 A at both 50 °C and 55 °C. Ambient operating range -40 °C to 75 °C, with humidity influence capped at 95% up to 55 °C, tapering to 35% at 75 °C. Pollution degree 3 (conductive pollution) and overvoltage category III suit it for industrial environments where condensation or dust is present. Halogen-free and silicon-free construction avoids outgassing issues in sealed enclosures.","metaTitle":"5SY4301-7CV Miniature Circuit Breaker, 1A C-Curve, 3-Pole, 1","metaDescription":"Siemens 5SY4301-7CV 3-pole MCB, 1A C-curve, 15kA breaking capacity per IEC 60947-2. Current production, sourced to order. Depth 76 mm, width 54 mm.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["3-Pole MCB (DIN Rail)"],"specifications":{"Depth":"76 mm","Width":"54 mm","title":"5SY4301-7CV","Height":"90 mm","Maximum":"75 °C","Minimum":"-40 °C","Sealable":"Yes","Standard":"IEC / EN 60947-2","description":"MCB Icu=15KA 400V 3P C1","Halogen-Free":"Yes","Silicon-Free":"Yes","Design Of Pole":"3P","Number Of Poles":"3","lifecycle_stage":"current","Fastening Method":"Quick assembly system","Mounting Position":"any","Installation Depth":"70 mm","Degree Of Pollution":"3","at AC / rated value":"1 A","protection class IP":"IP20, with connected conductors","Overvoltage Category":"III","Combined Terminal Top":"Yes","according to EN 61346-2":"F","at 35 °C / rated value":"1 A","at 40 °C / rated value":"0.93 A","at 45 °C / rated value":"0.89 A","at 50 °C / rated value":"0.8 A","at 55 °C / rated value":"0.8 A","Combined Terminal Bottom":"Yes","according to IEC 81346-2":"F","Suitability For Operation":"Mechanical engineering / industry","Neutral Conductor Switching":"No","Number Of Modular Width Units":"3","Tripping Characteristic Class":"C","Position / Of Power Supply Cord":"Any","Supply Voltage Frequency / Rated Value":"50/60 Hz","according to IEC 60947-2 / rated value":"15 kA","Influence Of The Surrounding Temperature":"max. 95% to 55°C, max. 55% to 70°C, max. 35% to 75°C","Type Of Voltage / Of The Operating Voltage":"AC","with multi-phase operation / at AC / rated value":"440 V","operating voltage / at DC / rated value / maximum":"72 V","vibration resistance / according to IEC 60068-2-6":"±1mm at 5 to 25Hz; 50m/s² at 25 to 150Hz","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/b5e14e4f719c6e2ec0f77810cdba13a2.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=1531570&mlfb=5SY4301-7CV"},"ai":{"faq":[{"question":"What is the breaking capacity of 5SY4301-7CV?","answer":"15 kA at 440 V AC per IEC 60947-2, which is the standard for industrial MCBs and covers most panel fault-current requirements."},{"question":"Where can I buy 5SY4301-7CV?","answer":"Sourced and quoted to order against an RFQ through independent distribution; availability and current pricing confirmed at quote time."},{"question":"Will 5SY4301-7CV drop into a panel specified for 5SY4106-7CV?","answer":"Both are 3-pole C-curve MCBs in the same 5SY4 series, same 3 MWU footprint, so the mechanical fit is identical — no rewiring needed for the panel cutout or DIN rail. The difference is the current rating: 5SY4301-7CV is 1 A, while 5SY4106-7CV is 6 A. Verify the load requirement before swapping."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SY4301-7CV","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/5SY4301-7CV 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}}