{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SJ4103-7HG40","brand":"Siemens","brandSlug":"siemens","productSlug":"5SJ4103-7HG40","canonicalUrl":"https://aoctrl.com/siemens/5SJ4103-7HG40","factsUrl":"https://aoctrl.com/api/mcp/products/5SJ4103-7HG40","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SJ4 series, miniature circuit breaker, 1-pole, C characteristic, 10 kA (EN 60898) / 15 kA (IEC 60947-2), 400 V AC, 60 V DC, 18 mm width, 70 mm depth.","salesMarkdown":"Rated for 400 V AC and 60 V DC, with a breaking capacity of 10 kA per EN 60898 and 15 kA per IEC 60947-2. Insulation voltage (Ui) is 440 V AC, so it's comfortable on 400 V line-to-line systems. One modular width (18 mm) means it takes up a single slot on the DIN rail. The 70 mm installation depth is the same as the body depth — no extra projection behind the rail. IP20 with conductors connected; IP40 in the handle range. That's fine for a standard IP54 or IP65 enclosure — the breaker itself doesn't need a sealed front. Vibration resistance tested to 50 m/s² at 25 to 150 Hz and 60 m/s² at 35 Hz (4 seconds). That covers most industrial machinery — conveyors, compressors, pumps — without needing a separate shock mount. The C-curve (5–10x In) is the workhorse for general industrial loads. If your circuit feeds purely resistive heaters or long cable runs with no inrush, a B-curve would trip faster on a short circuit. If it's a high-inrush transformer or large motor starter, a D-curve (10–20x In) might be needed. For most panel loads — contactors, relays, small VFDs, solenoid valves — the C-curve is the right call. Rated for 50 Hz only. If your site runs 60 Hz, this breaker's magnetic trip characteristics are calibrated for 50 Hz zero-crossing behavior; a 60 Hz supply could shift the trip threshold slightly. Check the application — for simple overcurrent protection on 60 Hz, the difference is usually negligible, but for coordinated selectivity with downstream devices, use the 50 Hz rating as published. Sealable (provision for a lock or tag-out hasp) — useful for lockout/tagout procedures on a machine panel. Neutral conductor switching is not provided (this is a 1-pole breaker for the phase only; neutral is either a solid bus or a separate switched neutral block).","metaTitle":"Siemens 5SJ4103-7HG40 SENTRON MCB, 1P, C-Curve, 10kA","metaDescription":"Siemens 5SJ4103-7HG40 SENTRON miniature circuit breaker, 1-pole, C characteristic, 10 kA per EN 60898, 15 kA per IEC 60947-2. 18 mm wide, 70 mm deep. Current production. Sourced to","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["1-Pole MCB (DIN Rail)"],"specifications":{"Depth":"70 mm","Width":"18 mm","Height":"90 mm","Maximum":"75 °C","Minimum":"-40 °C","Sealable":"Yes","Halogen-Free":"Yes","Silicon-Free":"Yes","Design Of Pole":"1P","Number Of Poles":"1","lifecycle_stage":"current","Fastening Method":"on standard mounting rail","Mounting Position":"any","at AC rated value":"400 V","at DC rated value":"60 V","Installation Depth":"70 mm","Product Brand Name":"SENTRON","Degree Of Pollution":"3","Product Designation":"Miniature circuit breakers","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","Combined Terminal Bottom":"Yes","Suitability For Operation":"Mechanical engineering / industry","at DC rated value maximum":"60 V","Neutral Conductor Switching":"No","Number Of Modular Width Units":"1","Position Of Power Supply Cord":"Any","Tripping Characteristic Class":"C","according to EN 60898 rated value":"10 kA","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)","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 (Operating Cycles) Typical":"10 000","Product Extension Installable Supplementary Devices":"Yes","Tightening Torque With Screw-Type Terminals Maximum":"3.5 N·m","power loss [W] for rated value of the current at AC in hot operating state per pole":"1.8 W"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$27.94","priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=278663&mlfb=5SJ4103-7HG40","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SJ4103-7HG40/alternatives.json"},"ai":{"faq":[{"question":"What is the width and depth of 5SJ4103-7HG40?","answer":"Width is 18 mm (one modular unit), depth is 70 mm (body depth including handle). Installation depth is also 70 mm."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SJ4103-7HG40","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/5SJ4103-7HG40 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}}