{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SJ4220-8HG42","brand":"Siemens","brandSlug":"siemens","productSlug":"5SJ4220-8HG42","canonicalUrl":"https://aoctrl.com/siemens/5SJ4220-8HG42","factsUrl":"https://aoctrl.com/api/mcp/products/5SJ4220-8HG42","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SJ4220-8HG42 miniature circuit breaker, 2-pole, D tripping characteristic, 10 kA (EN 60898) / 15 kA (IEC 60947-2), 400 V AC, 60 V DC, 2 MW units, halogen-free.","salesMarkdown":"## D-curve trip for motor and transformer loads The 5SJ4220-8HG42: This 2-pole MCB carries a D tripping characteristic — magnetic trip between 10× and 20× In — so it handles the inrush from small motors, transformers, and solenoid banks without nuisance tripping. Rated 10 kA breaking capacity per EN 60898 and 15 kA per IEC 60947-2 at 400 V AC, it clears a fault before the upstream device has to act. ## DIN-rail fit and panel space Width is 36 mm (2 modular units), depth 70 mm, height 121 mm. Snaps onto standard mounting rail in any position — no orientation restrictions. Installation depth matches the 70 mm depth, so it sits flush in a standard 80 mm deep enclosure with room for wiring behind. ## Environmental and compliance specs Halogen-free and silicon-free construction — important for sensitive contact environments and low-smoke applications. IP20 with connected conductors, IP40 in the handle range. Pollution degree 3, overvoltage category 3, ambient temperature range -40 °C to 75 °C, and 95% humidity tolerance. Sealable for lockout/tagout.","metaTitle":"Siemens 5SJ4220-8HG42 SENTRON MCB, 2-pole, D-curve, 10 kA","metaDescription":"Siemens SENTRON 5SJ4220-8HG42 miniature circuit breaker, 2-pole, D tripping characteristic, 10 kA (EN 60898) / 15 kA (IEC 60947-2).","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":"5SJ4220-8HG42","Height":"121 mm","Maximum":"75 °C","Minimum":"-40 °C","Sealable":"Yes","description":"Circuit breaker 10kA, 2-pole, D, 20A 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":"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":"2","Position Of Power Supply Cord":"Any","Tripping Characteristic Class":"D","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":"2.4 W"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$243.33","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/d582050e6400c5d59faa3944c954096a.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=445147&mlfb=5SJ4220-8HG42"},"ai":{"faq":[{"question":"Will the 5SJ4220-8HG42 drop into a panel specified around the 5SY7206-7CC?","answer":"Both are 2-pole DIN-rail MCBs, but the 5SJ4220-8HG42 has a D-curve while the 5SY7206-7CC is a different series with different breaking capacity and trip characteristics. Confirm the BOM's required tripping curve and breaking capacity before swapping."},{"question":"What compliance documentation does the 5SJ4220-8HG42 carry?","answer":"Rated per EN 60898 (10 kA) and IEC 60947-2 (15 kA). Halogen-free and silicon-free. IP20/IP40, pollution degree 3, overvoltage category 3."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SJ4220-8HG42","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/5SJ4220-8HG42 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}}