{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SJ4301-7HG42","brand":"Siemens","brandSlug":"siemens","productSlug":"5SJ4301-7HG42","canonicalUrl":"https://aoctrl.com/siemens/5SJ4301-7HG42","factsUrl":"https://aoctrl.com/api/mcp/products/5SJ4301-7HG42","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SJ4 miniature circuit breaker, order code 5SJ4301-7HG42, 1 A rated current at 30 °C, C tripping characteristic, 3 poles, 70 mm depth, 54 mm width, 121 mm height.","salesMarkdown":"The Siemens 5SJ4301-7HG42 is a SENTRON 5SJ4 miniature circuit breaker rated 1 A at 30 °C with a C tripping characteristic, 3 poles, and a 70 mm depth. Rated 1 A at 30 °C and 40 °C, derating to 0.97 A at 45 °C, 0.9 A at 50 °C and 55 °C, and 0.88 A at 60 °C. That derating curve is the one that governs real panel ambient — if your enclosure runs at 50 °C, you're limited to 0.9 A continuous. The C characteristic (5–10× In) handles motor inrush and transformer magnetizing currents without nuisance trips, while still clearing short circuits fast enough for cable protection. DC rating is 60 V maximum, so it can switch DC control circuits up to that voltage, but the primary application is AC branch-circuit protection. Vibration resistance tested at 50 m/s² over 25–150 Hz and 60 m/s² at 35 Hz for 4 seconds — enough for machinery-mounted panels on conveyors or compressors. The sealable cover and touch protection add a layer of safety for live-front installations. IP20 with connected conductors, IP40 in the handle range — fine for enclosed panels; not rated for washdown. Mounting position any, so vertical or horizontal rail orientation works.","metaTitle":"Siemens 5SJ4301-7HG42 SENTRON MCB, 1 A, C-Curve, 3-Pole","metaDescription":"Siemens 5SJ4301-7HG42 SENTRON miniature circuit breaker, 1 A rated at 30 °C, C tripping characteristic, 3 poles, 70 mm depth, current lifecycle. Sourced to order against an RFQ.","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":"5SJ4301-7HG42","Height":"121 mm","Maximum":"75 °C","Minimum":"-40 °C","Sealable":"Yes","description":"Circuit breaker 10kA, 3-pole, C, 1A according to UL 489-480Y/277V","Halogen-Free":"Yes","Silicon-Free":"Yes","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":"1 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":"1 A","at 40 °C / rated value":"1 A","at 45 °C / rated value":"0.97 A","at 50 °C / rated value":"0.9 A","at 55 °C / rated value":"0.9 A","at 60 °C / rated value":"0.88 A","Combined Terminal Bottom":"Yes","according to IEC 81346-2":"F","Suitability For Operation":"Mechanical engineering / industry","Number Of Modular Width Units":"3","Tripping Characteristic Class":"C","at DC / rated value / maximum":"60 V","Position / Of Power Supply Cord":"Any","Product Feature / Touch Protection":"Yes","according to EN 60898 / rated value":"10 kA","supply voltage / at AC / rated value":"400 V","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","insulation voltage (Ui) / at AC / rated value":"440 V","Product Component / Neutral Conductor Switching":"No","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/66c4275b406be015e3090d653776aa4a.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=464991&mlfb=5SJ4301-7HG42"},"ai":{"faq":[{"question":"How do I get current pricing and availability for 5SJ4301-7HG42?","answer":"Pricing and availability are confirmed at quote time. Submit an RFQ against this order code; the part is sourced through independent distribution and quoted to order."},{"question":"What is 5SJ4301-7HG42's listed depth?","answer":"The depth is 70 mm, which matches the installation depth — no extra clearance needed behind the DIN rail."},{"question":"What compliance documentation does Siemens provide for 5SJ4301-7HG42?","answer":"The part carries designations per EN 61346-2 and IEC 81346-2 (both letter F). It is halogen-free and silicon-free. Specific RoHS, REACH, and UL documentation should be requested with the RFQ."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SJ4301-7HG42","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/5SJ4301-7HG42 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}}