{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SJ4313-7HG42","brand":"Siemens","brandSlug":"siemens","productSlug":"5SJ4313-7HG42","canonicalUrl":"https://aoctrl.com/siemens/5SJ4313-7HG42","factsUrl":"https://aoctrl.com/api/mcp/products/5SJ4313-7HG42","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SJ4 miniature circuit breaker, 3-pole, C tripping characteristic, 13 A rated current, 54 mm width, 70 mm depth, 121 mm height, DIN rail mount.","salesMarkdown":"## What this MCB is and where it fits The Siemens 5SJ4313-7HG42 is a SENTRON 5SJ4 miniature circuit breaker (MCB) with three poles, a C-curve tripping characteristic, and a 13 A rated current. It snaps onto a standard mounting rail (DIN rail) inside a distribution board or control panel, occupying three modular width units (54 mm total). The C-curve means the magnetic trip operates at 5 to 10 times rated current, which suits mixed resistive and moderate inductive loads common in mechanical engineering and industrial panel builds. ## Thermal derating — the real current capability Rated current holds at 13 A up to 40 °C ambient. Above that, it derates: 12.6 A at 45 °C, 12.2 A at 50 °C, 11.8 A at 55 °C, and 11.4 A at 60 °C. If this breaker sits in a warm enclosure — near transformers, drives, or a furnace control cabinet — size the load against the derated figure, not the 13 A label. Pollution degree 3 and overvoltage category 3 mean it's rated for industrial environments where conductive dust or condensation is expected.","metaTitle":"Siemens 5SJ4313-7HG42 SENTRON MCB, 3P C13, 13 A, DIN Rail","metaDescription":"Siemens 5SJ4313-7HG42 SENTRON miniature circuit breaker, 3-pole, C-curve, 13 A rated at 30/40 °C. IP20/IP40. DIN rail mount. Current lifecycle stage. Quoted to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["3-Pole MCB (DIN Rail)"],"specifications":{"Depth":"70 mm","Width":"54 mm","title":"5SJ4313-7HG42","Height":"121 mm","Maximum":"75 °C","Minimum":"-40 °C","Sealable":"Yes","description":"Circuit breaker 10kA, 3-pole, C, 13A according to UL 489-480Y/277V","Halogen-Free":"Yes","Silicon-Free":"Yes","Design Of Pole":"3P","Number Of Poles":"3","lifecycle_stage":"current","Fastening Method":"on standard mounting rail","Mounting Position":"any","Installation Depth":"70 mm","Product Brand Name":"SENTRON","Degree Of Pollution":"3","Product Designation":"Miniature circuit breakers","at AC / rated value":"13 A","protection class IP":"IP20, with connected conductors, IP 40 in the handle range","Overvoltage Category":"3","Tunnel Terminals Top":"No","Vibration Resistance":"50 m/s² at 25 to 150Hz and 60m/s² at 35Hz (4sec)","Combined Terminal Top":"Yes","Design Of The Product":"Miniature circuit-breaker 5SJ4","Product Function / Note":"Terminal tightening torque for Cu, 60/75°C; 3.5Nm/31lb.in","Tunnel Terminals Bottom":"No","according to EN 61346-2":"F","at 30 °C / rated value":"13 A","at 40 °C / rated value":"13 A","at 45 °C / rated value":"12.6 A","at 50 °C / rated value":"12.2 A","at 55 °C / rated value":"11.8 A","at 60 °C / rated value":"11.4 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","at DC / rated value / maximum":"60 V","Position / Of Power Supply Cord":"Any","according to EN 60898 / rated value":"10 kA","supply voltage / at AC / rated value":"400 V","Ambient Temperature / During Operation":"max. 95% humidity","Supply Voltage Frequency / Rated Value":"50 Hz","according to IEC 60947-2 / rated value":"15 kA","installation environment regarding EMC":"Suitable for environment B (immunity to interference not applicable)","Type Of Voltage / Of The Operating Voltage":"AC/DC","Value Range / Of The Supply Voltage Frequency":"50/60 Hz","insulation voltage (Ui) / at AC / rated value":"440 V","vibration resistance / according to IEC 60068-2-6":"±1 mm at 5 to 25 Hz; 50 m/s² at 25 to 150 Hz","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/086e8c399c6f9a91bf5d1ea9f78d44fd.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=211379&mlfb=5SJ4313-7HG42"},"ai":{"faq":[{"question":"What is the closest functional second-source for 5SJ4313-7HG42?","answer":"The 5SY7210-7CC is a functional peer from the same SENTRON family, but it is a different pole count and rating. Verify your specific current and pole requirements before substituting — the 5SJ4313-7HG42 is a 3-pole, 13 A, C-curve MCB."},{"question":"Will 5SJ4313-7HG42 drop into a panel specified around 5SY7210-7CC without rewiring?","answer":"Both mount on standard DIN rail with similar modular widths, but the 5SJ4313-7HG42 is a 3-pole unit while the 5SY7210-7CC may differ in pole count and rating. Check the existing wiring scheme — if the panel expects a 3-pole C13 breaker, the footprint matches; if not, terminal positions will not align."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SJ4313-7HG42","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/5SJ4313-7HG42 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}}