{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SL4304-0RC","brand":"Siemens","brandSlug":"siemens","productSlug":"5SL4304-0RC","canonicalUrl":"https://aoctrl.com/siemens/5SL4304-0RC","factsUrl":"https://aoctrl.com/api/mcp/products/5SL4304-0RC","rawCanonicalId":null},"summary":{"shortDescription":"Siemens Betagard miniature circuit breaker, 5SL4304-0RC, 3-pole, 4 A rated, Z tripping characteristic, 10 kA breaking capacity per EN 60898, 15 kA per IEC 60947-2, 415 V AC, IP20.","salesMarkdown":"## What you're looking at — and what the Z-curve means for your panel The 5SL4304-0RC is a Siemens Betagard miniature circuit breaker — 3-pole, 4 A rated at AC, with a Z tripping characteristic. That Z-curve is the key spec: it trips between 2x and 3x In (8 to 12 A magnetic release), which is tighter than a B-curve and much tighter than C or D. Z-curve MCBs are built for semiconductor and control-circuit protection where you need short-circuit clearing without nuisance trips on small transformer inrush or capacitive loads, but still want fast reaction to a fault. At 415 V AC rated voltage, with a maximum of 440 V AC for multi-phase operation, it covers standard European 400 V three-phase distribution. ## Panel fit and mounting — the 3-module width and derating reality Mounting position is any — no orientation restrictions. Thermal derating is published: 4.5 A at 30 °C, 4.2 A at 40 °C, 4.1 A at 45 °C, 4 A at 50 °C, 3.9 A at 55 °C, 3.7 A at 60 °C. If your panel ambient runs 50 °C, you're at the nameplate 4 A — no headroom. At 60 °C you lose 0.3 A off the rating. That's the figure to use for continuous load sizing, not the 30 °C number. ## DC rating and vibration — edge cases that matter Maximum DC rated voltage is 72 V — useful if you're breaking a 48 V or 60 V control bus, but not rated for 110 V DC circuits. ## Sourcing this order code If you're filling a BOM line or replacing a failed unit in a live panel, send the order code and quantity for a firm quote.","metaTitle":"Siemens Betagard 5SL4304-0RC MCB, 4A Z-Curve 3-Pole 10kA","metaDescription":"Siemens Betagard 5SL4304-0RC miniature circuit breaker, 4 A rated, Z tripping characteristic, 3-pole, 10 kA per EN 60898, 15 kA per IEC 60947-2. Current production. Quoted to order","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["3-Pole MCB (DIN Rail)"],"specifications":{"Depth":"76 mm","Width":"54 mm","title":"5SL4304-0RC","Height":"90 mm","Maximum":"75 °C","Minimum":"-40 °C","Sealable":"Yes","description":"Miniature Circuit Breaker 4A 3-pole Z characteristic 10kA","Halogen-Free":"Yes","Silicon-Free":"Yes","Design Of Pole":"3P","Number Of Poles":"3","lifecycle_stage":"current","Mounting Position":"any","Installation Depth":"70 mm","Product Brand Name":"Betagard","Degree Of Pollution":"3","Product Designation":"Miniature circuit breaker","acc. to IEC 81346-2":"F","at AC / rated value":"4 A","protection class IP":"IP20, with connected conductors","Overvoltage Category":"III","acc. to DIN EN 61346-2":"F","at 30 °C / rated value":"4.5 A","at 40 °C / rated value":"4.2 A","at 45 °C / rated value":"4.1 A","at 50 °C / rated value":"4 A","at 55 °C / rated value":"3.9 A","at 60 °C / rated value":"3.7 A","Number Of Modular Width Units":"3","Tripping Characteristic Class":"Z","at DC / rated value / maximum":"72 V","acc. to EN 60898 / rated value":"10 kA","acc. to IEC 60947-2 / rated value":"15 kA","Product Feature / Touch Protection":"Yes","supply voltage / at AC / rated value":"415 V","Type Of Voltage / Of The Operating Voltage":"AC","vibration resistance / acc. to IEC 60068-2-6":"50 m/s² at 25 to 150 Hz","with multi-phase operation / at AC / maximum":"440 V","Product Component / Neutral Conductor Switching":"No","with multi-phase operation / at AC / rated value":"440 V","with single-phase operation / at AC / rated value":"440 V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/5b69e2d7e81e2f42b38e770e8cc909de.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=1502378&mlfb=5SL4304-0RC"},"ai":{"faq":[{"question":"What does the Z tripping characteristic mean for my application?","answer":"Z-curve trips magnetically at 2x to 3x In (8 to 12 A for this 4 A breaker). That's designed for semiconductor protection and control circuits where you need fast fault clearing but want to avoid nuisance trips from small transformer inrush or capacitive loads."},{"question":"What is the breaking capacity of the 5SL4304-0RC?","answer":"10 kA per EN 60898 and 15 kA per IEC 60947-2. For industrial panel coordination, use the IEC 60947-2 figure."},{"question":"What is the rated voltage for this MCB?","answer":"415 V AC rated, with a maximum of 440 V AC for multi-phase operation. DC rated voltage is 72 V maximum."},{"question":"Where can I buy the 5SL4304-0RC?","answer":"Sourced and quoted to order against an RFQ through independent distribution. Send the order code and quantity for a firm quote on availability and pricing."},{"question":"Will the 5SL4304-0RC drop into a panel specified around the 5SL3340-7CC?","answer":"Both are 3-pole Siemens MCBs on the same DIN-rail footprint, but the 5SL3340-7CC is a different current rating and tripping characteristic. Check the panel's coordination study — the Z-curve on this part trips faster than a B or C curve, so selectivity with downstream devices may shift."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SL4304-0RC","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/5SL4304-0RC 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}}