{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SJ4210-7HG42","brand":"Siemens","brandSlug":"siemens","productSlug":"5SJ4210-7HG42","canonicalUrl":"https://aoctrl.com/siemens/5SJ4210-7HG42","factsUrl":"https://aoctrl.com/api/mcp/products/5SJ4210-7HG42","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SJ4210-7HG42, 2-pole miniature circuit breaker, 10 A rated current, C tripping characteristic, 36 mm wide, for DIN rail mounting.","salesMarkdown":"## 10 A C-Curve 2-Pole MCB — Panel Fit and Trip Coordination The Siemens 5SJ4210-7HG42 is a SENTRON miniature circuit breaker rated 10 A at both AC and 30/40 °C, with a C tripping characteristic — magnetic trip between 5 and 10× rated current, so it handles moderate inrush from motor starters and contactor coils without nuisance trips on a 24 VDC control loop. Two-pole design (2P) with both poles switched; neutral conductor is not switched. ## Thermal Derating and Ambient Envelope Rated 10 A continuous at 30 °C and 40 °C; derates to 9.7 A at 45 °C, 9.4 A at 50 °C, 9.1 A at 55 °C. At 60 °C the rating drops sharply to 0.88 A — this is the thermal-magnetic element's ceiling, not a typo. ## Integration — DIN Rail and Vibration Vibration resistance tested to 50 m/s² at 25–150 Hz and 60 m/s² at 35 Hz (4 s) — holds up on machine-mounted panels near rotating equipment. IP20 with connected conductors, IP40 in the handle range — suitable for enclosed panels where incidental finger contact is the only exposure. Sealable design allows lockout/tagout. Halogen-free and silicon-free construction for sensitive environments like clean rooms or food processing.","metaTitle":"Siemens 5SJ4210-7HG42 SENTRON 2-Pole MCB, 10 A C-Curve","metaDescription":"Siemens 5SJ4210-7HG42 SENTRON 2-pole MCB, 10 A rated, C trip characteristic, 36 mm wide, active production. Quoted to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["2-Pole MCB (DIN Rail)"],"specifications":{"Depth":"70 mm","Width":"36 mm","title":"5SJ4210-7HG42","Height":"121 mm","Maximum":"75 °C","Minimum":"-40 °C","Sealable":"Yes","description":"Circuit breaker 10kA, 2-pole, C, 10 A according to UL 489-480Y/277V","Halogen-Free":"Yes","Silicon-Free":"Yes","Design Of Pole":"2P","Number Of Poles":"2","lifecycle_stage":"current","Fastening Method":"on standard mounting rail","Mounting Position":"any","at AC rated value":"10 A","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","at 30 °C rated value":"10 A","at 40 °C rated value":"10 A","at 45 °C rated value":"9.7 A","at 50 °C rated value":"9.4 A","at 55 °C rated value":"9.1 A","at 60 °C rated value":"0.88 A","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":"2","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","Value Range Of The Supply Voltage Frequency":"50/60 Hz","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":"1.4 W"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$76.20","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/39764a41302f093b09f57620390ad321.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=109564&mlfb=5SJ4210-7HG42"},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SJ4210-7HG42","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/5SJ4210-7HG42 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}}